Relevant bibliographies by topics / Finite differences Computer programs

Academic literature on the topic 'Finite differences Computer programs'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Contents

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Finite differences Computer programs.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Finite differences Computer programs"

1

Vafidis, A., F. Abramovici, and E. R. Kanasewich. "Elastic wave propagation using fully vectorized high order finite‐difference algorithms." GEOPHYSICS 57, no. 2 (February 1992): 218–32. http://dx.doi.org/10.1190/1.1443235.

Full text
Abstract:
Two finite‐difference schemes for solving the elastic wave equation in heterogeneous two‐dimensional media are implemented on a vector computer. A modified Lax‐Wendroff scheme that is second‐order accurate both in time and space and is a version of the MacCormack scheme that is second‐order accurate in time and fourth‐order in space. The algorithms are based on the matrix times vector by diagonals technique that is fully vectorized and is described using a novel notation for vector supercomputer operations. The technique described can be implemented on a vector processor of modest dimensions and increase the applicability of finite differences. The two difference operators are compared and the programs are tested for a simple case of standing sinusoidal waves for which the exact solution is known and also for a two‐layer model with a line source. A comparison of the results for an actual well‐to‐well experiment verifies the usefulness of the two‐dimensional approach in modeling the results.
APA, Harvard, Vancouver, ISO, and other styles
2

Small, Gregory E., and Sidney H. Simmonds. "Spreadsheet solutions of elastic plate–beam problems." Canadian Journal of Civil Engineering 17, no. 6 (December 1, 1990): 931–39. http://dx.doi.org/10.1139/l90-105.

Full text
Abstract:
Spreadsheets are among the most common microcomputer programs used by engineers because they provide an easy means of formulating equations in algebraic format. By introducing appropriate stiffness equations with numerical values representative of material properties, boundary conditions, and loading, spreadsheet templates can be developed to model specific structural systems. These equations are mutually dependent and may be solved using the iteration techniques that are part of the spreadsheet program. A common structural problem that is difficult to solve without a special computer program is the analysis of a slab arbitrarily supported on elastic beams and columns. The use of readily available spreadsheet programs to solve this problem is demonstrated. Equations for slab bending and for beams with finite flexural and torsional stiffnesses are derived using finite difference operators. These equations are then recast into a form more convenient for an iterative solution. The use of these equations is demonstrated with numerical examples. Key words: analysis, convergence criteria, deflections, finite difference, plates, spreadsheets.
APA, Harvard, Vancouver, ISO, and other styles
3

Thomas, B. G., and B. Ho. "Spread Sheet Model of Continuous Casting." Journal of Engineering for Industry 118, no. 1 (February 1, 1996): 37–44. http://dx.doi.org/10.1115/1.2803646.

Full text
Abstract:
Spreadsheet programs, such as Microsoft Excel, Informix WINGZ, and Lotus 123, provide a framework for very fast and easy development of simple engineering models. The present paper describes a model of the continuous casting process that has been developed using a spreadsheet program, Microsoft Excel, running on a Macintosh II personal computer. The model consists of two-dimensional (2-D) steady-state finite-difference heat conduction calculations within a continuous casting mold coupled to a one-dimensional (1-D) transient solidification heat transfer model of the solidifying shell. The model structure and equations are described and the model predictions are compared with previous solutions. Practical examples using the model are discussed and sample results are provided. Spreadsheet programs running on personal computers are capable of relatively complex calculations that would require extensive effort using conventional programming languages.
APA, Harvard, Vancouver, ISO, and other styles
4

Horstmann, Martin, Alexander T. Topham, Petra Stamm, Sebastian Kruppert, John K. Colbourne, Ralph Tollrian, and Linda C. Weiss. "Scan, extract, wrap, compute—a 3D method to analyse morphological shape differences." PeerJ 6 (June 8, 2018): e4861. http://dx.doi.org/10.7717/peerj.4861.

Full text
Abstract:
Quantitative analysis of shape and form is critical in many biological disciplines, as context-dependent morphotypes reflect changes in gene expression and physiology, e.g., in comparisons of environment-dependent phenotypes, forward/reverse genetic assays or shape development during ontogenesis. 3D-shape rendering methods produce models with arbitrarily numbered, and therefore non-comparable, mesh points. However, this prevents direct comparisons. We introduce a workflow that allows the generation of comparable 3D models based on several specimens. Translocations between points of modelled morphotypes are plotted as heat maps and statistically tested. With this workflow, we are able to detect, model and investigate the significance of shape and form alterations in all spatial dimensions, demonstrated with different morphotypes of the pond-dwelling microcrustacean Daphnia. Furthermore, it allows the detection even of inconspicuous morphological features that can be exported to programs for subsequent analysis, e.g., streamline- or finite-element analysis.
APA, Harvard, Vancouver, ISO, and other styles
5

Nazaruddin, N., and Richard Siallagan. "Software Engineering Development of Finite Element Method Programming Applications in 2D Frame Structures Using Python Programs." Journal of Physics: Conference Series 2049, no. 1 (October 1, 2021): 012031. http://dx.doi.org/10.1088/1742-6596/2049/1/012031.

Full text
Abstract:
Abstract The application of the Finite Element Method as one of the numerical methods to solve various engineering problems is of course inseparable from the development of computers with various other related fields such as Computer Aided Design (CAD) and Computer Aided Engineering (CAE) which continuously becomes a concentration of interest in the engineering field. Element analysis has so far been in great demand by various industries due to its reliability and speed in terms of optimization in the world of design and analysis. There are many finite element software such as Abaqus, Nastran, Ansys, CosmosWork, LS-Dyna, Pro-Mecanica, SAP2000. However, the application is paid at a relatively high cost and has quite strict licensing rules, of course this is an obstacle for students at the University of Riau who want to use it. From these problems the author is interested in developing a programming application that can be an alternative to analyzing a structure. The solution that the author can propose is to develop an application using the python programming language to analyze a two-dimensional (2D) frame structure that is under load and is in an elastic condition. From the results of the research that has been carried out, the simulation results of the frame A model obtained data on the 2nd frame model of frame A, the horizontal displacement of -0.06098 m, the vertical displacement of -0.00002857 m, and the angular displacement of 0.00762 rad. These results are compared with manual solutions, analytical solutions, and previous research, it can be concluded that the results of calculations in the developed application show values that are close to that comparison, where the percentage error is not more than 3%, with the highest percentage difference of 2.5%.
APA, Harvard, Vancouver, ISO, and other styles
6

Luo, Zhizhong. "Computation of Two-Dimensional Poisson Equation Using the Third-Order Discrete Scheme of Finite Difference Method Based on Node Set Vector." Journal of Physics: Conference Series 2381, no. 1 (December 1, 2022): 012039. http://dx.doi.org/10.1088/1742-6596/2381/1/012039.

Full text
Abstract:
Abstract A novel third-order discrete scheme of finite difference method based on node set vector for two dimensional Poisson equation is proposed in this paper. Studies on the basic discrete scheme of this method as well as the discrete scheme of the interior node and boundary node are carried out in detail. Computer programs are also developed to emulate a computation sample. The numerical computation results show that this discrete scheme is effective for the numerical computation of two dimensional Poisson equation.
APA, Harvard, Vancouver, ISO, and other styles
7

MISZCZAK, Andrzej, and Krzysztof WIERZCHOLSKI. "ANALYSIS OF THE VALUES OF HYDRODYNAMIC PRESSURE AND LOAD CARRYING CAPACITIES FOR VARIOUS METHODS OF SOLVING A REYNOLDS TYPE EQUATION." Tribologia 280, no. 4 (August 1, 2018): 55–62. http://dx.doi.org/10.5604/01.3001.0012.7532.

Full text
Abstract:
Calculations of the hydrodynamic pressure distribution in the slide bearing gap occur most often on the basis of ready-made computer programs based on CFD methods or one’s own calculation procedures based on various numerical methods. The use of one’s own calculation procedures and, for example, the finite difference method, allows one to include in the calculations of various additional non-classical effects on the lubricant (e.g., the influence of the magnetic field on ferrofluid, the influence of pressure or temperature on viscosity changes, non-Newtonian properties of lubricant or various non-classical models of dynamic viscosity changes). The aim of the authors’ research is to check how large the differences in results may be obtained using the two most frequently used methods of solving a Reynolds type equation. In this work, the authors use the small parameter method and the method of subsequent approximations to determine the distribution of hydrodynamic pressure. For numerical calculations, the finite difference method and our own calculation procedures and Mathcad 15 software were used. With both methods, identical conditions and parameters were assumed and the influence of pressure and temperature on viscosity change was taken into account. In the hydrodynamic pressure calculations, a laminar flow of the lubricating liquid and a non-isothermal lubrication model of the slide bearing were adopted. The classic Newtonian model was used as a constitutive equation. A cylindrical-type slide bearing of finite length with a smooth pan with a full wrap angle was accepted for consideration. In the thin layer of the oil film, the density and thermal conduction coefficient of the oil were assumed to remain unchanged.
APA, Harvard, Vancouver, ISO, and other styles
8

Hadim, A., A. T. Chang, A. Chu, and A. Yskamp. "An Interfacing Software Package for Thermal Analysis: Application to Microelectronics." Journal of Electronic Packaging 111, no. 1 (March 1, 1989): 54–60. http://dx.doi.org/10.1115/1.3226509.

Full text
Abstract:
A software package called: INterfacing Software for Thermal ANalysis (INSTAN) is developed to interface finite element general purpose programs with finite-difference thermal network analyzers for detailed analysis of complex thermal problems. The finite element mesh is used to generate the thermal network representation of the problem. INSTAN performs automatically the thermal network calculations and generates a complete input file for the thermal analysis program. The INSTAN software package is a powerful modeling tool which uses the preprocessing and postprocessing features available in a finite element program. It has also the flexibility and heat transfer calculation capabilities of a finite-difference program. It can handle problems with three-dimensional irregular geometries, time and temperature dependent properties, and anisotropic materials. The software possesses enhanced capabilities that make it suitable for thermal analysis of microelectronic equipment.
APA, Harvard, Vancouver, ISO, and other styles
9

Harutyunyan, Robert. "Computer Modeling and Optimization of Soil Thawing Using Microwave Energy." Известия высших учебных заведений. Электромеханика 63, no. 6 (2020): 37–43. http://dx.doi.org/10.17213/0136-3360-2020-6-37-43.

Full text
Abstract:
A mathematical model is developed to calculate the electromagnetic field A mathematical model is formu-lated, and a finite-difference method and computer programs are developed that allow effective computer mod-eling and optimization of high-speed soil thawing processes in various ways, including using magnetrons. As the main modeling method, a variant of the end-to-end "enthalpy" method without smoothing the concentrated heat capacity is used. A series of calculations was performed for the informative case of Sandstone and sandy loam during thawing by magnetrons of standard structures. The significant influence of nonlinearities of ther-mal parameters, phase transitions of melting and evaporation, and the type of boundary conditions on the val-ues of temperature and electric fields is established. The effect of losses on convective cooling and evaporation is negligible. The results of the work can be applied in the practice of research and design of earthmoving op-erations in the cryolithozone.
APA, Harvard, Vancouver, ISO, and other styles
10

Wulandari, Tika Ermita. "Prediksi Penurunan Konsolidasi Menggunakan Preloading dan Prefabricated Vertical Drain dengan Software Metode Elemen Hingga." JOURNAL OF CIVIL ENGINEERING BUILDING AND TRANSPORTATION 5, no. 2 (September 24, 2021): 99–108. http://dx.doi.org/10.31289/jcebt.v5i2.5844.

Full text
Abstract:
Consolidation is the process of removing water from the pores of the soil which causes changes in the volume of the soil which results in damage to the construction above it. This is more fatal if the decline that occurs is local. Nowadays the use of vertical drains is increasingly in demand, especially with the Prefabricated Vertical Drain (PVD) system which can reduce the time of the soil consolidation process significantly from several years to a matter of months and with technological advances, software is created that can make it easier to calculate construction work with computer programs, one of which is the only finite element method software (Plaxis) to calculate the consolidation settlement process. This study aims to analyze using Finite Element Method software with the help of 2D and 3D plaxis programs to get the consolidation settlement size. The results of 2D and 3D modeling will be compared so that the results that are closest to the field conditions are obtained. From the results of the analysis, it can be concluded that the magnitude of the decrease in Plaxis 3D is closer to the settlement plate data S29 with a decrease of 6.956m or a difference of -0.234m, while the magnitude of the decrease in Plaxis 2D is 7.491 with a difference of decrease of 0.301m.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Finite differences Computer programs"

1

Ampadu, Ebenezer. "Implementation of some finite difference methods for the pricing of derivatives using C++ programming." Link to electronic thesis, 2007. http://www.wpi.edu/Pubs/ETD/Available/etd-051807-164436/.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Bodden, Eric. "Verifying finite-state properties of large-scale programs." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=86909.

Full text
Abstract:
Designers of software components can use finite-state properties to denote behavioral interface specifications which enforce client-side programming rules that state how the components ought to be used. This allows users of these components to check their client code for compliance with these rules, both statically and at runtime.
In this dissertation we explain the design and implementation of Clara, a framework for specifying and verifying finite-state properties of large-scale programs. With Clara, programmers specify finite-state properties together with runtime monitors, using a syntactic extension to the aspect-oriented programming language AspectJ. Clara then uses a sequence of three increasingly detailed static analyses to determine if the program satisfies the finite-state properties, i.e., is free of property violations.
Clara produces a list of program points at which the program may violate the properties, ranked by a confidence value. If violations are possible, Clara also instruments the program with the supplied runtime monitor, which will capture property violations when the program executes. Due to its static analyses, Clara can omit the instrumentation at program locations which the analyses proved safe, and so optimize the instrumented program. When much instrumentation remains, Clara partitions the instrumentation into subsets, so that one can distribute multiple partially instrumented program versions that each run with a low overhead.
We validated the approach by applying Clara to finite-state properties denoted in multiple formalisms over several large-scale Java programs. Clara proved that most of the programs fulfill our example properties. For most other programs, Clara could remove the monitoring overhead to below 10%. We also found multiple property violations by manually inspecting the top entries in Clara's ranked result list.
Les concepteurs des différentes composantes logicielles peuvent utiliser les propriétés des automates finis pour fixer les spécifications de l'interface comportementale qui contrôleront les règles de programmations définissant l'utilisation des composantes. Ceci permet aux utilisateurs de ces composantes de vérifier le respect de ses règles par leurs codes sources, à la fois lors d'une analyse statique qu'à l'exécution.
Dans cette dissertation, nous montrerons la conception de Clara, une structure qui permet de spécifier et de vérifier les propriétés des automates finis dans des programmes étendus, puis expliquerons son implantation. Le programmeur, à l'aide de Clara, peut définir les propriétés des automates finis en complément aux processus de vérification à l'exécution, en utilisant une extension de la syntaxe d'AspectJ, un langage de programmation orienté aspect. Clara utilise alors, en séquence, trois analyses statiques de précision croissante pour déterminer si le programme respecte les propriétés des automates finis.
Clara produit une liste des positions dans le code source où il y a risque de violation de ces «propriétés», en ordre décroissant de certitude d'une violation. Quand cela est possible, Clara ajoute au programme des processus de vérification permettant d'étudier la violation de «propriétés» lors de son exécution. Grâce à son analyse statique, Clara n'ajoute pas au code ces processus dans les portions de code qui n'ont pas la possibilité de violer les propriétés des automates finis, ce qui limite les ralentissements dus aux processus de vérification. Lorsque ses ajouts restent considérables, Clara organise les processus de vérification à l'exécution en sous-groupe, de sorte qu'il soit possible de distribuer différentes versions du programme contenant seulement une partie de ceux-ci, limitant ainsi l'utilisation des ressources système à l'exécution.
Nous avons validé cette approche en soumettant à Clara les propriétés des automates finis sous différents modèles à appliquer sur différents programmes Java. Clara a permis de prouver que la plupart de ces programmes respectaient déjà les propriétés définies. Dans les autres cas, Clara a pu réduire le coût des processus de vérification à moins de 10%. De plus, nous avons pu localiser de nombreuses violations de propriété manuellement, en inspectant les entrées en importance dans la liste produite par Clara.
APA, Harvard, Vancouver, ISO, and other styles
3

DuVarney, Daniel C. "Abstraction-Based Generation of Finite State Models from C Programs." NCSU, 2002. http://www.lib.ncsu.edu/theses/available/etd-20020328-101420.

Full text
Abstract:
by

Daniel C. DuVarney

PhD Dissertation submitted to the Faculty of the North Carolina State University in partial fulfillment of the requirements for the degree of

PhD

in

Computer Science

Approved

S. Purushothaman Iyer, Chair
W. Rance Cleaveland
K.C. Tai
John W. Baugh

January 22, 2002
Raleigh, North Carolina

Abstract

Model checking is a major advancement in the quest forpractical automatic verification methods for computer systems, and has been effectively used to discoverflaws in real-world hardware systems. Unfortunately, applying model-checking techniques to software systems has proved to be more difficult, due to the large number of states and irregular transitions of such systems. One promising method for generating reasonably-sized models from programs is the use of data abstraction, in which the program data is mapped from a large set of possible values to a much smaller set of abstract values. This thesis develops a method which, given a program in the C language and an abstraction mapping, allows the automatic construction of an abstract labeled transition system (LTS), which is much smaller than the concrete LTS (the LTS which would be generated without the benefit of abstraction). The method is shown to be sound in the sense that if a program is well-behaved in its use of pointers, then any linear temporal logic formula which holds true for the corresponding abstract LTS will also hold true for the concrete LTS. Furthermore, if a design exists in the form of a transition system, then the abstract LTS can be checked against the design for bisimilarity. Bisimilarity ensures that the program is a faithful implementation ofthe design. A suite of software tools has been implemented based upon the theory. These tools interface with the Concurrency Workbench, a model checking system. A case study is presented which shows the practicality of this technique for verifying real-world C programs.

APA, Harvard, Vancouver, ISO, and other styles
4

Werpers, Jonatan. "Numerical simulation of solitons in the nerve axon using finite differences." Thesis, Uppsala universitet, Avdelningen för beräkningsvetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-234383.

Full text
Abstract:
A High-order accurate finite difference scheme is derived for a non-linear soliton model of nerve signal propagation in axons. Boundary conditions yielding well-posed problems are suggested and included in the scheme using a penalty technique. Stability is shown using the summation-by-parts framework for a frozen parameter version of the non-linear problem.
APA, Harvard, Vancouver, ISO, and other styles
5

Kelley, Helen Marie, and University of Lethbridge Faculty of Arts and Science. "The importance of individual differences in developing computer training programs for end users." Thesis, Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 1994, 1994. http://hdl.handle.net/10133/55.

Full text
Abstract:
Research emphasises that effective and efficient end-user training is a vital component of the successful utilization of computer technology and that individual differences (e.g., learning styles, cognitive reasoning schemata) may effect the outcomes of end-user training. This study investigates the relationships between end users' Motivational Intent to use computer technology and individual differences. End users' Motivational Intent to use computer technology is significantly different for between-subjects grouped according to their level of anxiety (i.e., positive, neutral, negative). The empirical results indicate that end users' scholastic ability is an important predictor of the incremental change over time to end users' Motivational Intent to use computer technology. End users' learning styles impact the incremental change over time to end users' Motivational Intent to use computer technology. The results suggest that the tailoring of end-user training methods, techniques and materials to accomodate individual differences may be beneficial and worthwhile.
x, 99 leaves : ill. ; 28 cm.
APA, Harvard, Vancouver, ISO, and other styles
6

Brown, Steven Andrew. "Development of a coupled finite element - boundary element program for a microcomputer." Thesis, Virginia Tech, 1985. http://hdl.handle.net/10919/45713.

Full text
Abstract:
This thesis describes the development of a coupled finite element — boundary element program for a microcomputer. The steps outlined in the thesis include the adaptation of a mainframe—based boundary element code for use on a microcomputer, the Verification of this program with sample problems, the development of an algorithm for coupling the Finite Element Method to the Boundary Element Method, the implementation of the coupling algorithm with finite element and boundary element codes, including the development of a Constant Strain Triangular finite element, and the Verification of the coupled program with sample problems. Conclusions are drawn from the results presented, and suggestions are made for future research in this area.
Master of Science
APA, Harvard, Vancouver, ISO, and other styles
7

Kanellopoulos, Vassilios N. "Vectorial finite element analysis of E-plane waveguide junctions." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=64027.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Pester, Matthias. "Visualization Tools for 2D and 3D Finite Element Programs - User's Manual." Universitätsbibliothek Chemnitz, 2006. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200600436.

Full text
Abstract:
This paper deals with the visualization of numerical results as a very convenient method to understand and evaluate a solution which has been calculated as a set of millions of numerical values. One of the central research fields of the Chemnitz SFB 393 is the analysis of parallel numerical algorithms for large systems of linear equations arising from differential equations (e.g. in solid and fluid mechanics). Solving large problems on massively parallel computers makes it more and more impossible to store numerical data from the distributed memory of the parallel computer to the disk for later postprocessing. However, the developer of algorithms is interested in an on-line response of his algorithms. Both visual and numerical response of the running program may be evaluated by the user for a decision how to switch or adjust interactively certain parameters that may influence the solution process. The paper gives a survey of current programmer and user interfaces that are used in our various 2D and 3D parallel finite element programs for the visualization of the solution.
APA, Harvard, Vancouver, ISO, and other styles
9

Sharp, Richard Paul. "Computational approaches for diffusive light transport finite-elements, grid adaption, and error estimation /." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1154705561.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

McDavid, Charles Scott. "Weight optimum arch structures." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA245954.

Full text
Abstract:
Thesis (M.S. in Mechanical Engineering)--Naval Postgraduate School, December 1990.
Thesis Advisor(s): Salinas, David. "December 1990." Description based on title screen as viewed on April 1, 2010. DTIC Identifier(s): Arches, Stress Analysis, Weight, Finite Element Analysis, Computer Programs, Optimization, Theses, Degrees Of Freedom, FORTRAN, Stiffness, Case Studies. Author(s) subject terms: Finite Element Method, Arches, Weight Optimization. Includes bibliographical references (p. 107). Also available in print.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Finite differences Computer programs"

1

Prudic, David E. Documentation of a computer program to simulate stream-aquifer relations using a modular, finite-difference, ground-water flow model. Denver, Colo: Dept. of the Interior, U.S. Geological Survey, 1989.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Scott, J. C. A statistical processor for analyzing simulations made using the modular finite-difference ground-water flow model. Oklahoma City, Okla: Dept. of the Interior, U.S. Geological Survey, 1990.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Sathe, Sanjeev. A general-purpose finite-difference code for solving steady-state three-dimensional fluid-flow and heat transfer problems. Monterey, Calif: Naval Postgraduate School, 1991.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Hansen, Arnold J. Modifications to the modular three-dimensional finite-difference ground-water flow model used for the Columbia Plateau regional aquifer-system analysis, Washington, Oregon, and Idaho. Tacoma, Wash: U.S. Dept. of the Interior, U.S. Geological Survey, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Hansen, Arnold J. Modifications to the modular three-dimensional finite-difference ground-water flow model used for the Columbia Plateau regional aquifer-system analysis, Washington, Oregon, and Idaho. Tacoma, Wash: U.S. Dept. of the Interior, U.S. Geological Survey, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Hansen, Arnold J. Modifications to the modular three-dimensional finite-difference ground-water flow model used for the Columbia Plateau regional aquifer-system analysis, Washington, Oregon, and Idaho. Tacoma, Wash: U.S. Dept. of the Interior, U.S. Geological Survey, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Kontis, A. L. Computer program for simulation of variable recharge with the U.S. Geological Survey modular finite-difference ground-water flow model (MODFLOW). Troy, N.Y: U.S. Dept. of the Interior, U.S. Geological Survey, 2001.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

NicCanna, Clodagh. The development of finite difference seismic wave simulators and their implementation using Parallel Virtual Machine (PVM) on a cluster of workstations. Dublin: University College Dublin, 1997.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Hansen, Arnold J. Archiving of source code for the finite-difference flow model and the post-processors and input and output files for the Columbia Plateau regional aquifer system, Washington, Oregon, and Idaho. Tacoma, Wash: U.S. Dept. of the Interior, U.S. Geological Survey, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Boyle, Robert J. Grid orthogonality effects on predicted turbine midspan heat transfer and performance. [Washington, DC]: National Aeronautics and Space Administration, 1995.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Finite differences Computer programs"

1

Reece, Gordon. "The THC (Transient Heat Conduction) Computer Program." In Microcomputer Modelling by Finite Differences, 68–83. London: Macmillan Education UK, 1986. http://dx.doi.org/10.1007/978-1-349-09051-8_8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Eslami, M. Reza. "Computer Programs." In Finite Elements Methods in Mechanics, 363–70. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-08037-6_17.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Lescow, Helmut. "On polynomial-size programs winning finite-state games." In Computer Aided Verification, 239–52. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/3-540-60045-0_54.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

van der Meyden, Ron. "Finite state implementations of knowledge-based programs." In Lecture Notes in Computer Science, 262–73. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/3-540-62034-6_55.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Weickert, Joachim, Martin Welk, and Marco Wickert. "L 2-Stable Nonstandard Finite Differences for Anisotropic Diffusion." In Lecture Notes in Computer Science, 380–91. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-38267-3_32.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Esposito, Floriana, Angela Laterza, Donato Malerba, and Giovanni Semeraro. "Locally finite, proper and complete operators for refining Datalog programs." In Lecture Notes in Computer Science, 468–78. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/3-540-61286-6_171.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Sakakibara, Yasubumi. "Development of a Bacteria Computer: From in silico Finite Automata to in vitro and in vivo." In Programs, Proofs, Processes, 362–71. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-13962-8_40.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Rodrigues, Vitor Hugo Mickus, Lucas Cavalcante, Maelso Bruno Pereira, Fabio Luporini, István Reguly, Gerard Gorman, and Samuel Xavier de Souza. "GPU Support for Automatic Generation of Finite-Differences Stencil Kernels." In Communications in Computer and Information Science, 230–44. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-41005-6_16.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Rasulov, Mahir, E. Ilhan Sahin, and M. Gokhan Soguksu. "Finite Differences Method for the First Order 2-D Partial Equation." In Lecture Notes in Computer Science, 454–62. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-41515-9_51.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Yang, Yue, and Liang Yu. "On Differences Among Elementary Theories of Finite Levels of Ershov Hierarchies." In Lecture Notes in Computer Science, 765–71. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11750321_73.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Finite differences Computer programs"

1

Harsokoesoemo, Darmawan, and Gatot Santoso. "Stress Distribution in the Region Around Two Normally Intersecting Pipes due to In-Plane Bending Moments Using Finite Element Method." In ASME 1997 Turbo Asia Conference. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/97-aa-058.

Full text
Abstract:
Numerically calculated stress in the region of two normally intersecting pipes due to in-plane bending moments using finite element program MECHANICA are presented in this paper. The computer results were processed and then presented in stress versus location (along several lines) diagrams. Other investigators’ results for similar problem are not easy to obtain due to differences in the problem, in modelling, in finite element program used and in methods of data presentation. Lock et al (1985) and Moffat et al (1984) works were the closest for comparison purposes.
APA, Harvard, Vancouver, ISO, and other styles
2

Wang, Feng, Roger Burke, and Alan Yu. "Comparison of Software for Analysis of Risers Tied Back With Pull Tubes." In ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/omae2016-54456.

Full text
Abstract:
Dynamic analysis of steel catenary risers (SCRs) tied back to a Spar through pull tubes has most commonly been performed with the general purpose finite element analysis program ABAQUS, which is generally considered to be most suitable for this type of configuration involving pipe-in-pipe contact between the riser and the pull tube. Version 9.6a and subsequent versions of the riser specific software package OrcaFlex include the capability to handle pipe-in-pipe contact through a line contact model. This model is similar to the contact model in ABAQUS in that it supports relative axial motion and axial friction between the contact lines. A benchmark study is performed to compare riser strength and fatigue performance of the two software packages. The focus of the study is on the pull tube and the riser inside the pull tube, where pipe-in-pipe contact occurs. Bending moment and von Mises stress from the two programs in design storms are found to agree closely. Governing loads on the pull tube guides computed with ABAQUS agree well with the loads computed with OrcaFlex. The two software packages compute similar vessel-motion induced fatigue damage of the bottom of the pull tube (pull tube stress joint). Agreement is not as close for the pull tube above the pull tube stress joint or for the riser pipe. Dynamic run times are comparable between the two programs. Results of the study can assist in the selection of the most suitable software for pull tube riser design and analysis, and in understanding the differences in results from the two software packages.
APA, Harvard, Vancouver, ISO, and other styles
3

Brown, Samuel. "Performance comparison of finite‐difference modeling on Cell, FPGA, and multicore computers." In SEG Technical Program Expanded Abstracts 2007. Society of Exploration Geophysicists, 2007. http://dx.doi.org/10.1190/1.2792905.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Pao, Y. C., and Erik L. Ritman. "Generalized Algorithms for Interactive Warping Analysis of Porous Cross Sections." In ASME 1999 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/detc99/cie-9070.

Full text
Abstract:
Abstract Algorithms have been developed for warping analysis and calculation of the shearing stresses in a general porous cross section of a long rod when it is subjected to twisting torques at its ends. The shape and dimensions of the cross section full of holes are defined from the binary segmented image data with by a micro-CT scanning technique. Finite difference approximation of the Laplace equation governing the cross-sectional warping leading to the matrix solution by a Gauss-Seidel process is discussed. Method of pointer matrix which keeps the locations of the nonzero elements of the coefficient matrix, is employed to expedite the iterative solution. Computer programs are coded in QuickBASIC language to facilitate plotting of the computed distributions of warping and shearing stresses. The classical torsional problem of square and thin-walled cross sections are used to reexamine the accuracy of the developed algorithms and results are found to be in very good agreement.
APA, Harvard, Vancouver, ISO, and other styles
5

Ramírez, Beatriz Eugenia Grass, Cesar A. Collazos, and Carina Soledad González. "Gender differences in Computing Programs." In Interacción '16: XVII International Conference on Human Computer Interaction. New York, NY, USA: ACM, 2016. http://dx.doi.org/10.1145/2998626.2998670.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Lee, S. J., M. H. Kim, D. H. Lee, and Y. S. Shin. "The Effects of Tank Sloshing on LNG Vessel Responses." In ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2007. http://dx.doi.org/10.1115/omae2007-29665.

Full text
Abstract:
The coupling and interactions between ship motion and inner-tank sloshing are investigated by a potential-viscous hybrid method in time domain. For the time domain simulation of vessel motion, the hydrodynamic coefficients and wave forces are obtained by a potential-theory-based 3D diffraction/radiation panel program in frequency domain. Then, the corresponding simulations of motions in time domain are carried out using the convolution-integral method. The liquid sloshing in a tank is simulated in time domain by a Navier-Stokes solver. A finite difference method with SURF scheme assuming the single-valued free surface profile is applied for the direct simulation of liquid sloshing. The computed sloshing forces and moments are then applied as external excitations to the ship motion. The calculated ship motion is in turn inputted as the excitation for liquid sloshing, which is repeated for the ensuing time steps. For comparison, we independently developed a 3D panel program for linear inner-fluid motions and it is coupled with the vessel motion program in the frequency domain. The developed computer programs are applied to a barge-type FPSO hull equipped with two partially filled tanks. The time-domain simulation results show reasonably good agreement when compared with MARIN’s experimental results. The frequency-domain results qualitatively reproduce the trend of coupling effects but the peaks are in general over-predicted. It is seen that the coupling effects on roll motions appreciably change with filling level. The most pronounced coupling effects on roll motions are the shift or split of peak frequencies. The pitch motions are much less influenced by the inner-fluid motion compared to roll motions.
APA, Harvard, Vancouver, ISO, and other styles
7

Menter, Uwe W., Thomas Klima, and Heiner Pfost. "Experimental Analysis and Numerical Simulation of the Flow Field in Turbine Scrolls." In ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/98-gt-597.

Full text
Abstract:
A large selection of one- and two-dimensional methods can be used to calculate the scroll geometries. This paper examines the consequences of different scroll geometry parameters under various flow configurations, including the influence of components in the scroll flow field. A combination of arrangements of the various components was investigated, (scroll/nozzle/rotor, scroll/nozzle/stator, scroll/vane support/rotor, scroll/vane support/stator), to see how the flow varied. In this particular case a frictionless scroll was designed. The turbine operates with a gas fluid. Using a non-invasive laser two-focus technique and wall pressure drillings the flow field was measured over three scroll cross sections and over its extent at φ = 186° up to φ = 211°. The theoretical analysis was performed on a computer using a commercial 3D finite element programme. Using the programme enables the theoretical flow fields of various scroll geometries to be calculated. The validity of the calculations can be assessed by comparing the theoretical calculations with the above mentioned measurements. The measurements show that by using a rotor the flow field inside the scroll remains uninfluenced by the vane support and nozzle. Measurable differences appear when the rotor is replaced by a stator, these results are confirmed by the computer program. The calculations also show that the scroll geometry has an important effect on the development of the flow field.
APA, Harvard, Vancouver, ISO, and other styles
8

Chu, Chunlei, and Paul L. Stoffa. "A pseudospectral‐finite difference hybrid approach for large‐scale seismic modeling and RTM on parallel computers." In SEG Technical Program Expanded Abstracts 2008. Society of Exploration Geophysicists, 2008. http://dx.doi.org/10.1190/1.3059302.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Simon, V. "The Influence of Gear Hobbing on Worm Gear Characteristics." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-79517.

Full text
Abstract:
A method is presented for the determination of the influence of gear hobbing on the precision and loaded tooth contact of worm gears. In order to get a worm gear set with fully conjugated teeth surfaces the gear teeth should be processed by a hob whose generator surface is identical to the worm surface. This requirement can be achieved by the use of a hob whose diameter is equal to the worm diameter and with infinite number of cutting edges. But because of the teeth in the hob are relieved, the diameter of the new hob should be slightly larger than the worm diameter to provide tool life. On the other hand, because of the finite number of hob teeth, the gear tooth surface, manufactured by such a hob, is not a smooth surface; it consists of a relatively big number of small parts of helical surfaces formed by the cutting edges of the hob. In this paper a method is presented for the determination of differences between the gear tooth surface processed by an oversized hob of finite number of teeth or by a flying tool, and the theoretically required gear tooth surface. Also the influence of hob oversize and machine tool settings on tooth contact pressure and transmission errors is determined. The full geometry and kinematics of gear tooth processing by an oversized hob or by flying tool is included. The theoretical background is implemented by a computer program. By using this program, the influence of relevant design parameters of worm gear set and hob and of machine tool settings on processed gear tooth errors and on loaded tooth contact of the worm gear pair is investigated and discussed. By another computer program the influence of cutter diameter and machine tool settings for pinion teeth processing on tooth contact pattern in spiral bevel gears is investigated and presented.
APA, Harvard, Vancouver, ISO, and other styles
10

Zhang, Haibin, Huilong Ren, and Yangshan Dai. "Direct Strength Analysis of Semi-Submersible Platform Structures." In ASME 2004 23rd International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2004. http://dx.doi.org/10.1115/omae2004-51284.

Full text
Abstract:
A kind of direct strength analysis method of semi-submersible platform structures is presented in this paper. With the differences in shape of pontoon, column and beam being considered, the method of accumulative chord length cubic parameter spline function combined with analytic expression is adopted to generate the mesh of platform wet surface. The hydrodynamic coefficients of the platform are calculated by the three-dimensional potential flow theory of the linear hydrodynamic problem for platforms with low forward speed. The equations of platform motions are established and solved in frequency domain, and the responses of wave-induced loads on the platforms are calculated. According to the mesh of hydrodynamic computation, the fluid dynamic pressure field of platform wet surface is built, and the pressure loads on shell elements in the finite element model of the structure are calculated by the interpolation method. The calculation conditions and loads in the finite element analysis (FEA) of the platform structures are determined according to the design wave analysis approach. A computer program based on this method has been developed, and a calculation example of semi-submersible platform is illustrated. Analysis results show that this method is a satisfying approach for wave load computation and direct strength analysis of the semi-submersible platforms.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Finite differences Computer programs"

1

Cook, W. A. Generalized finite strains, generalized stresses, and a hybrid variational principle for finite-element computer programs using curvilinear coordinates. Office of Scientific and Technical Information (OSTI), April 1989. http://dx.doi.org/10.2172/6288515.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Ramakrishnan, Aravind, Ashraf Alrajhi, Egemen Okte, Hasan Ozer, and Imad Al-Qadi. Truck-Platooning Impacts on Flexible Pavements: Experimental and Mechanistic Approaches. Illinois Center for Transportation, November 2021. http://dx.doi.org/10.36501/0197-9191/21-038.

Full text
Abstract:
Truck platoons are expected to improve safety and reduce fuel consumption. However, their use is projected to accelerate pavement damage due to channelized-load application (lack of wander) and potentially reduced duration between truck-loading applications (reduced rest period). The effect of wander on pavement damage is well documented, while relatively few studies are available on the effect of rest period on pavement permanent deformation. Therefore, the main objective of this study was to quantify the impact of rest period theoretically, using a numerical method, and experimentally, using laboratory testing. A 3-D finite-element (FE) pavement model was developed and run to quantify the effect of rest period. Strain recovery and accumulation were predicted by fitting Gaussian mixture models to the strain values computed from the FE model. The effect of rest period was found to be insignificant for truck spacing greater than 10 ft. An experimental program was conducted, and several asphalt concrete (AC) mixes were considered at various stress levels, temperatures, and rest periods. Test results showed that AC deformation increased with rest period, irrespective of AC-mix type, stress level, and/or temperature. This observation was attributed to a well-documented hardening–relaxation mechanism, which occurs during AC plastic deformation. Hence, experimental and FE-model results are conflicting due to modeling AC as a viscoelastic and the difference in the loading mechanism. A shift model was developed by extending the time–temperature superposition concept to incorporate rest period, using the experimental data. The shift factors were used to compute the equivalent number of cycles for various platoon scenarios (truck spacings or rest period). The shift model was implemented in AASHTOware pavement mechanic–empirical design (PMED) guidelines for the calculation of rutting using equivalent number of cycles.
APA, Harvard, Vancouver, ISO, and other styles
3

Striuk, Andrii M. Software engineering: first 50 years of formation and development. [б. в.], December 2018. http://dx.doi.org/10.31812/123456789/2880.

Full text
Abstract:
The article analyzes the main stages of software engineering (SE) development. Based on the analysis of materials from the first SE conferences (1968-1969), it was determined how the software crisis prompted scientists and practitioners to join forces to form an engineering approach to programming. Differences in professional training for SE are identified. The fundamental components of the training of future software engineers are highlighted. The evolution of approaches to the design, implementation, testing and documentation of software is considered. The system scientific, technological approaches and methods for the design and construction of computer programs are highlighted. Analysis of the historical stages of the development of SE showed that despite the universal recognition of the importance of using the mathematical apparatus of logic, automata theory and linguistics when developing software, it was created empirically without its use. The factor that led practitioners to turn to the mathematical foundations of an SE is the increasing complexity of software and the inability of empirical approaches to its development and management to cope with it. The training of software engineers highlighted the problem of the rapid obsolescence of the technological content of education, the solution of which lies in its fundamentalization through the identification of the basic foundations of the industry. It is determined that mastering the basics of computer science is the foundation of vocational training in SE.
APA, Harvard, Vancouver, ISO, and other styles
4

Documentation of a computer program to simulate aquifer-system compaction using the modular finite-difference ground-water flow model. US Geological Survey, 1991. http://dx.doi.org/10.3133/twri06a2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Finite differences Computer programs' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography