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Letteratura scientifica selezionata sul tema "Smoothed particle hydrodynamics"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 8 giugno 2024

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Articoli di riviste sul tema "Smoothed particle hydrodynamics"

Monaghan, J. J. "Smoothed Particle Hydrodynamics". Annual Review of Astronomy and Astrophysics 30, n. 1 (settembre 1992): 543–74. http://dx.doi.org/10.1146/annurev.aa.30.090192.002551.

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Monaghan, J. J. "Smoothed particle hydrodynamics". Reports on Progress in Physics 68, n. 8 (5 luglio 2005): 1703–59. http://dx.doi.org/10.1088/0034-4885/68/8/r01.

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Ritchie, B. W., e P. A. Thomas. "Multiphase smoothed-particle hydrodynamics". Monthly Notices of the Royal Astronomical Society 323, n. 3 (21 maggio 2001): 743–56. http://dx.doi.org/10.1046/j.1365-8711.2001.04268.x.

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Cullen, Lee, e Walter Dehnen. "Inviscid smoothed particle hydrodynamics". Monthly Notices of the Royal Astronomical Society 408, n. 2 (30 luglio 2010): 669–83. http://dx.doi.org/10.1111/j.1365-2966.2010.17158.x.

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Tsuji, P., M. Puso, C. W. Spangler, J. M. Owen, D. Goto e T. Orzechowski. "Embedded smoothed particle hydrodynamics". Computer Methods in Applied Mechanics and Engineering 366 (luglio 2020): 113003. http://dx.doi.org/10.1016/j.cma.2020.113003.

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Ellero, Marco, Mar Serrano e Pep Español. "Incompressible smoothed particle hydrodynamics". Journal of Computational Physics 226, n. 2 (ottobre 2007): 1731–52. http://dx.doi.org/10.1016/j.jcp.2007.06.019.

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Petschek, A. G., e L. D. Libersky. "Cylindrical Smoothed Particle Hydrodynamics". Journal of Computational Physics 109, n. 1 (novembre 1993): 76–83. http://dx.doi.org/10.1006/jcph.1993.1200.

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Tavakkol, Sasan, Amir Reza Zarrati e Mahdiyar Khanpour. "Curvilinear smoothed particle hydrodynamics". International Journal for Numerical Methods in Fluids 83, n. 2 (7 giugno 2016): 115–31. http://dx.doi.org/10.1002/fld.4261.

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Trimulyono, Andi. "Validasi Gerakan Benda Terapung Menggunakan Metode Smoothed Particle Hydrodynamics". Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan 15, n. 2 (6 giugno 2018): 38–43. http://dx.doi.org/10.14710/kpl.v15i2.17802.

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Murante, G., S. Borgani, R. Brunino e S. H. Cha. "Hydrodynamic simulations with the Godunov smoothed particle hydrodynamics". Monthly Notices of the Royal Astronomical Society 417, n. 1 (13 settembre 2011): 136–53. http://dx.doi.org/10.1111/j.1365-2966.2011.19021.x.

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Tesi sul tema "Smoothed particle hydrodynamics"

Lin, Feng Ying. "Smoothed particle hydrodynamics". Mémoire, Université de Sherbrooke, 2005. http://savoirs.usherbrooke.ca/handle/11143/4654.

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Since its introduction in the late 1970s by Lucy [11] and Gingold and Monaghan [4], smoothed particle hydrodynamics (SPH) has been used in many areas. It has grown into a widely-recognized technique with many practical applications. In this thesis, we present a new application of the SPH method: a new algorithm for computing a null divergence velocity field using SPH for incompressible flow - a pure SPH solution of the Helmholtz-Hodge decomposition. Also, a new version of the Laplacian for SPH is proposed and the advantages and disadvantages of different gradient and Laplacian approximation formulas used in SPH are also discussed. A new treatment of boundary conditions is proposed for the whole solution procedure. Throughout the thesis, a brief historical overview is presented, along with some fundamental notions about SPH and computational fluid dynamics.

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Akinci, Nadir [Verfasser], e Matthias [Akademischer Betreuer] Teschner. "Interface handling in smoothed particle hydrodynamics = Interface-Handhabung in Smoothed Particle Hydrodynamics". Freiburg : Universität, 2014. http://d-nb.info/1114829331/34.

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Galagali, Nikhil. "Algorithms for particle remeshing applied to smoothed particle hydrodynamics". Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/55074.

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Thesis (S.M.)--Massachusetts Institute of Technology, Computation for Design and Optimization Program, 2009.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 57-59).
This thesis outlines adaptivity schemes for particle-based methods for the simulation of nearly incompressible fluid flows. As with the remeshing schemes used in mesh and grid-based methods, there is a need to use localized refinement in particle methods to reduce computational costs. Various forms of particle refinement have been proposed for particle-based methods such as Smoothed Particle Hydrodynamics (SPH). However, none of the techniques that exist currently are able to retain the original degree of randomness among particles. Existing methods reinitialize particle positions on a regular grid. Using such a method for region localized refinement can lead to discontinuities at the interfaces between refined and unrefined particle domains. In turn, this can produce inaccurate results or solution divergence. This thesis outlines the development of new localized refinement algorithms that are capable of retaining the initial randomness of the particles, thus eliminating transition zone discontinuities. The algorithms were tested through SPH simulations of Couette Flow and Poiseuille Flow with spatially varying particle spacing. The determined velocity profiles agree well with theoretical results. In addition, the algorithms were also tested on a flow past a cylinder problem, but with a complete domain remeshing. The original and the remeshed particle distributions showed similar velocity profiles. The algorithms can be extended to 3-D flows with few changes, and allow the simulation of multi-scale flows at reduced computational costs.
by Nikhil Galagali.
S.M.

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Vijaykumar, Adithya. "Smoothed Particle Hydrodynamics Simulation for Continuous Casting". Thesis, KTH, Matematik (Inst.), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-105554.

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This thesis proposes a way of simulating the continuous casting process of steel using Smoothed Particle Hydrodynamics (SPH). It deals with the SPH modeling of mass, momentum and the energy equations. The interpolation kernel functions required for the SPH modeling of these equations are calculated. Solidification is modeled by some particles are used to represent fluids and others solids. Elastic forces are calculated between the particle neighbors to create deformable bodies. The fluid solidifies into the elastic body when it cools down and the elastic body melts as it is heated. In continuous casting the molten metal solidifies forming a shell when it comes in contact with the cold wall. The mold of the continuous casting is modeled with a cold oscillating wall and a symmetric wall. Once the shell is formed water is sprayed on the solidified metal. If the shell is thin and cooling is not sufficient, the elastic body melts due to the effect of the hot fluid.
Den klassiska SPH-modellen för vätskor med fri yta kompletteras med värmeledning med fasomvandling och stelning: partiklar kan byta mellan vätske-tillstånd och solid-tillstånd beroende på temperaturen. Elastiska krafter beroende på avstånd mellan partiklarna aktiveras i solid-tillståndet och slås av i fluid-tillstånd så att vätskan kan stelna och senare smälta igen om så behövs. Vid stränggjutning stelnar smältan, som fylls på via ett rör, vid kontakt med en oscillerande, kall kokill-vägg, till ett elastiskt skal. Detta kyls fortlöpande genom påsprutning av vatten utanpå kokillen och direkt på skalet, som förångas. Skalet deformeras nedanför kokillen av det hydrostatiska trycket från smältan; om det ar för tunt brister det. Som demonstration gjordes en simulering där ett skal skapas, varpå man slår av vattenkylningen på ett parti: då smälter skalet och blir tunnare och till sist brister det och all smälta rinner ut genom hålet. Noggrannheten i simuleringen lämnar en del att önska men det vore mycket svårt att bygga en så komplex modell med vanlig CFD.

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McCabe, Christopher. "Smoothed particle hydrodynamics on graphics processing units". Thesis, Manchester Metropolitan University, 2012. http://e-space.mmu.ac.uk/304852/.

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A recent development in Computational Fluid Dynamics (CFD) has been the meshless method calledWeakly Compressible Smoothed Particle Hydrodynamics (WCSPH), which is a Lagrangian method that tracks physical quantities of a fluid as it moves in time and space. One disadvantage of WCSPH is the small time steps required due to the use of the weakly compressible Tait equation of state, so large scale simulations using WCSPH have so far been rare and only performed on very expensive CPU-based supercomputers. As CFD simulations grow larger and more detailed, the need to use high performance computing also grows. There is therefore great interest in any computer technology that can provide the equivalent computational power of the CPU-based supercomputer for a fraction of the cost. Hence the excitement aroused in the SPH community by the Graphics Processing Unit (GPU). The GPU offers great potential for providing significant increases in computational performance due to its much smaller size and power consumption relative to the more established and traditional high performance computers comprising hundreds or thousands of CPUs. However, there are some disadvantages in programming GPUs. The memory structure of the GPU is more complex and more variable in speed, and there are other factors that can seriously affect performance, such as the thread grid dimensions which drives the occupancy of the GPU. The aim of this thesis is to describe how WCSPH can be efficiently implemented on multiple GPUs. First, some CFD methods and their success or otherwise in simulating free surfaces are discussed, and examples of previous attempts at implementing CFD algorithms on GPUs are given. The mathematical theory of WCSPH is then presented, followed by a detailed examination of the architecture of a GPU and how to program a GPU. Two different implementations of the same WCSPH algorithm are then described to simulate a well known experiment of a collapse of a column of water to highlight two possible uses of the GPU memory. The first method uses the fast shared memory of the GPU, which is recommended by the GPU manufacturer, while the second method uses the texture i memory of the GPU, which acts as a cache. It is shown that due to the theory of WCSPH, which allows particles to only interact with other particles a short distance apart, that despite the speed of the shared memory and the power of coalescing data into the shared memory, the texture memory method is currently the most efficient, but that this method of implementing WCSPH on a single GPU requires a much higher degree of complexity of programming than the shared memory method. It is also shown that the size of the thread block can have a significant effect on performance. Riemann solvers add more computational effort but can provide more accuracy. The use of Riemann solvers in WCSPH and their success or otherwise is then examined, and the results and performance of one particular WCSPH algorithm that uses an approximate Riemann solver when executed on a GPU are reported. The treatment of boundaries has been and continues to be a problem in WCSPH, and there are a number of creative proposals for boundary treatments. Some of these are described in detail before a new boundary treatment is proposed that builds upon a boundary treatment that was recently proposed, and improves its performance in execution time on a GPU by using the registers and not the slower memories of the GPU. This new boundary treatment builds a unique private grid of boundary particles for each fluid particle close to the boundary. All computation is performed in the registers, the properties of the boundary particles depend on the fluid particle only, and there is no requirement to recall data from the slower global or texture memories of the GPU. The new boundary treatment is also shown to propagate a solitary wave further, preserves the wave height more and takes less execution time to compute than the original boundary treatment this new treatment builds on. A unique and simple implementation of WCSPH on multiple GPUs is then described, and the results of a simulation of a collapse of a column of water in 3D are reported and compared against the results from a simulation of the same problem with the same WCSPH algorithm executed on a large cluster of multi core CPUs. The conclusion is that simulations on a small cluster of GPUs can achieve greater performance than from a cluster of multi core CPUs, but to achieve this the slow GPU memories, including the texture ii memory, must be avoided by using the registers as much as possible, and the architecture of the network linking the GPUs together must be exploited. The former was achieved by using the new boundary treatment proposed in this thesis and discussed above, and the latter was achieved by the use of the MPI Group functionality. The GPUs used for this thesis were already connected together in boxes of 4 by the manufacturer. The cluster used for this thesis consisted of 8 of these boxes, giving a total of 32 GPUs. These boxes of 4 GPUs were connected together through a common host, but the communication speed over the connection between the box and the host is much slower than that between the GPUs inside the box. The total communication time was minimized by grouping the GPUs inside a box together with their private unique MPI communicator, and a communication procedure was created to minimize communication over the relatively slow connection between the boxes of GPUs and the host. Finally, some conclusions are drawn and suggestions for further work are made.

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Ismail, Ernesto Bram. "Smoothed particle hydrodynamics for nonlinear solid mechanics". Master's thesis, University of Cape Town, 2009. http://hdl.handle.net/11427/11888.

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Includes abstract.
Includes bibliographical references (leaves 115-117).
Smooth Particle Hydrodynamics (SPH) is one of the simplest meshless methods currently in use. The method has seen significant development and has been the germination point for many other meshless methods. The development of new meshless methods regularly uses standard SPH as a starting point, while trying to improve on issues related to consistency and stability. Despite these perceived flaws it is favoured by many researchers because of its simple structure and the ease with which it can be implemented.

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Parameswaran, Gopalkrishnan. "Smoothed Particle Hydrodynamics studies of heap leaching hydrodynamics and thermal transport". Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/39879.

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This thesis is concerned with the development and application of Smoothed Particle Hydrodynamics (SPH) models for studying multiphase flows such as those relevant to the analysis of the hydrodynamics and thermal transport involved in heap leaching. The improvements made here to the modelling aspects of multiphase SPH are seen to bring about measurable improvements to solution quality. A relative density formulation and a 'compressibility-matching' method for handling interfaces eliminate what would otherwise be significant obstacles to obtaining stable and smooth pressure fields. The convergence properties of the formulation are seen to approach the theoretically expected value in SPH. Convergence is also seen to strongly depend on the smoothing length factor used. A factor found to influence error magnitudes that nevertheless does not affect convergence rates is the extent of initial particle disorder. The simplified cases representative of heap leaching hydrodynamics studied through 2D simulations allow an understanding of flow at the particle scale. The significant dependence of mean flow rates in these systems on particle sizes, saturation and contact angle is shown. In 3D, saturated flows through packed beds of spherical particles are presented. Steady-state superficial velocities obtained through simulations, compared with analytical relationships given by Cozeny-Karman and Ergun relations are illustrative of the ability of SPH to reproduce packed bed flows satisfactorily. Subsequently unsaturated regimes encountered at the channel scale are studied qualitatively for saturation values typical of real heaps. A heat transfer model based on a formulation for single-phase SPH developed by Szewc et al. is implemented. The model's performance (in terms of Rayleigh numbers indicative of transition to unsteady convection in differentially heated cavities (DHCs)) is satisfactory when compared with the established single-phase results of Le Quere. Its application to an idealised unsaturated scenario demonstrates its useability for multiphase studies. Finally, an extension is made to the model to account for turbulent regime heat transport. This extension, deriving from one used for finite elements by Chatelain et al. is novel in the SPH context and lets the loss of stratification seen in DHCs at high Rayleigh numbers be predicted with reasonable accuracy.

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Strand, Russell K. "Smoothed particle hydrodynamics modelling for failure in metals". Thesis, Cranfield University, 2010. http://dspace.lib.cranfield.ac.uk/handle/1826/6773.

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It is generally regarded to be a difficult task to model multiple fractures leading to fragmentation in metals subjected to high strain rates using numerical methods. Meshless methods such as Smoothed Particle Hydrodynamics (SPH) are well suited to the application of fracture mechanics, since they are not prone to the problems associated with mesh tangling. This research demonstrates and validates a numerical inter-particle fracture model for the initiation, growth and subsequent failure in metals at high strain rate, applicable within a Total Lagrangian SPH scheme. Total Lagrangian SPH performs calculations in the reference state of a material and therefore the neighbourhoods remain fixed throughout the computation; this allows the inter-particle bonds to be stored and tracked as material history parameters. Swegle (2000) showed that the SPH momentum equation can be rearranged in terms of a particle-particle interaction area. By reducing this area to zero via an inter-particle damage parameter, the principles of continuum damage mechanics can be observed without the need for an effective stress term, held at the individual particles. This research makes use of the Cochran-Banner damage growth model which has been updated for 3D damage and makes the appropriate modifications for inter-particle damage growth. The fracture model was tested on simulations of a 1D flyer plate impact test and the results were compared to experimental data. The test showed that the model can recreate the phenomena associated with uniaxial spall to a high degree of accuracy. Some limited modelling was also conducted in 2 and 3 dimensions and promising results were observed. Research was also performed into the mesh sensitivity of the explosively driven Mock- Holt experiment. 3D simulations using the Eulerian SPH formulation were conducted and the best results were observed with a radial packing arrangement. An in-depth assessment of the Monaghan repulsive force correction was also conducted in attempt to eliminate the presence of the SPH tensile instability and stabilise the available Eulerian SPH code. Successful results were observed in 1D, although the results could not be replicated consistently in 2D. A further study was also conducted into an approach that makes use of a partition of unity weighting to two different SPH approximations of the same flow-field; one local and one non-local (or extended). Unfortunately this approach could not be made to stabilise the code.

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Spreng, Fabian [Verfasser]. "Smoothed Particle Hydrodynamics for Ductile Solids / Fabian Spreng". Aachen : Shaker, 2017. http://d-nb.info/1139583565/34.

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Anathpindika, Sumedh V. "Smoothed particle hydrodynamics simulations of colliding molecular clouds". Thesis, Cardiff University, 2008. http://orca.cf.ac.uk/54779/.

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The galactic disk is largely composed of hot, rarefied gas also called the inter cloud medium (ICM). The cooler regions of the ICM are dominated by molecular species and dust. Immersed in this neutral medium are dense agglomerations of primarily H2, called giant molecular clouds (GMCs). The GMCs have a velocity dispersion of order a few km s_1, superimposed on their orbital motion. A GMC, over a single period of rotation of the galaxy, may undergo a few tens of collisions. In the present work, we investigate this rather violent phenomenon and examine the prospects of star formation in the post collision composite gas body. The star formation code, DRAGON, employed for the present work is ill equipped to study the effects of cloud collision on the chemical composition of the ICM. We draw a distinction between the regime of high velocity (precollision Mach numbers in excess of ten) and low velocity (precollision Mach numbers of order unity) cloud collisions, on the basis of the evolution of the gas slab produced in either cases. While the former leads to the formation of a dense shock compressed gas slab, the latter results in a dense pressure compressed gas slab. We observe that strong internal shear in a shock compressed slab suppresses gravitational instability in it. In particular, we observe evidence for the non-linear thin shell instability (NTSI) in the shocked slab formed in a head-on cloud collision. The slab thus dissipates thermal energy and upon the loss of thermal support, collapses to form a thin, long filament along the collision axis. Star formation proceeds in this filament. There is however, no evidence of the NTSI in the oblique shocked slab resulting from off centre cloud collisions, although it is dominated by internal shearing motion. On the other hand, the pressure compressed slab is dominated by gravitational instability and fragments, when the fastest growing mode dominates. The slab develops a number of floccules, which merge to form larger clumps and filamentary structures. The densest regions in these large scale structures then collapse gravitationally. We suggest this as a possible mechanism for the formation of star clusters. YSOs forming in filamentary structures are fed with material streaming along the axis of respective filaments. This material also transfers angular momentum to the accreting protostellar core and the attendant accretion disk is orthogonal to the angular momentum vector of this inflowing material. In the filaments resulting from the collapse of the post-collision shocked slab in a head-on cloud collision, we observe that the accretion disks circumscribing the sinks, are orthogonal to the filament. However, the gas slab resulting from a low velocity, off centre cloud collision is wrapped around by angular momentum and gravitationally fragments to form filaments. This slab tumbles in the plane of the collision (and therefore the axis about which it tumbles, comes out of this plane), the filaments in the slab also tumble with it. In the process they become offset relative to each other and feed angular momentum to the candidate protostellar core along the direction normal to the angular momentum axis. Thus, any attendant accretion disk is expected to be parallel to the filament (also the angular momentum) axis (Whitworth et al., 1995). To test this hypothesis, we collated data for YSOs located in filamentary star forming regions, and outflows originating from them. The scope of our work was limited and restricted to only five filamentary star forming regions in the local universe. Outflows from YSOs generally have small opening angles and are approximately normal to the circumstellar disk. Under this premise, we can get an idea of the orientation of the circumstellar disks relative to their natal filaments. We concluded that 72% outflows were distributed within 45 of being orthogonal to their natal filaments and 28% were distributed within 45 of being parallel to their natal filaments. It is difficult to make a strong claim simply on the basis of this work, which therefore needs to be extended. None the same, it tends to support the mechanism elucidated by Whitworth et al. (1995).

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Più fonti

Libri sul tema "Smoothed particle hydrodynamics"

Dutra Fraga Filho, Carlos Alberto. Smoothed Particle Hydrodynamics. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-00773-7.

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B, Liu M., a cura di. Smoothed particle hydrodynamics: A meshfree particle method. New Jersey: World Scientific, 2003.

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Lee, Hwi. Some Applications of Nonlocal Models to Smoothed Particle Hydrodynamics-like Methods. [New York, N.Y.?]: [publisher not identified], 2021.

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Stellingwerf, Robert Francis. Impact modeling with smooth particle hydrodynamics. Loa Alamos, NM: Los Alamos National Laboratory, 1993.

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Trease, Harold E., Martin F. Fritts e W. Patrick Crowley, a cura di. Advances in the Free-Lagrange Method Including Contributions on Adaptive Gridding and the Smooth Particle Hydrodynamics Method. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/3-540-54960-9.

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Next Free-Lagrange Conference (1990 Moran, Wyo.). Advances in the Free-Lagrange method: Including contributions on adaptive gridding and the smooth particle hydrodynamics method : proceedings of the Next Free-Lagrange Conference held at Jackson Lake Lodge, Moran, Wyoming, USA, 3-7 June 1990. Berlin: Springer-Verlag, 1991.

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Liu, G. R., e M. B. Liu. Smoothed Particle Hydrodynamics. WORLD SCIENTIFIC, 2003. http://dx.doi.org/10.1142/5340.

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Carlos Alberto Dutra Fraga Filho. Smoothed Particle Hydrodynamics: Fundamentals and Basic Applications in Continuum Mechanics. Springer, 2018.

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Trease, Harold E., Martin F. Fritts e W. Patrick Crowley. Advances in the Free-Lagrange Method: Including Contributions on Adaptive Gridding and the Smooth Particle Hydrodynamics Method. Springer, 2014.

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Fritts, M. J., H. E. Trease e Free-Lagrange Conference (1990 Moran Wyo ). Next. Advances in the Free-Lagrange Method: Including Contributions on Adaptive Gridding and the Smooth Particle Hydrodynamics Method : Proceedings of the (Lecture Notes in Physics). Springer, 1992.

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Capitoli di libri sul tema "Smoothed particle hydrodynamics"

Monaghan, J. J. "Smoothed Particle Hydrodynamics". In Numerical Astrophysics, 357–66. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4780-4_110.

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Weißenfels, Christian. "Smoothed Particle Hydrodynamics". In Simulation of Additive Manufacturing using Meshfree Methods, 101–23. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-87337-0_6.

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Dutra Fraga Filho, Carlos Alberto. "Introduction". In Smoothed Particle Hydrodynamics, 1–9. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00773-7_1.

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Dutra Fraga Filho, Carlos Alberto. "Physical-Mathematical Modelling". In Smoothed Particle Hydrodynamics, 11–16. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00773-7_2.

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Dutra Fraga Filho, Carlos Alberto. "Smoothed Particle Hydrodynamics Method". In Smoothed Particle Hydrodynamics, 17–65. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00773-7_3.

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Dutra Fraga Filho, Carlos Alberto. "Applications in Continuum Fluid Mechanics and Transport Phenomena". In Smoothed Particle Hydrodynamics, 67–100. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00773-7_4.

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Klapp, Jaime, Leonardo Di G. Sigalotti, Franklin Peña-Polo e Leonardo Trujillo. "Strong Shocks with Smoothed Particle Hydrodynamics". In Experimental and Theoretical Advances in Fluid Dynamics, 69–79. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-17958-7_6.

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Monaghan, Joseph J. "New Developments in Smoothed Particle Hydrodynamics". In Lecture Notes in Computational Science and Engineering, 281–90. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-642-56103-0_19.

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Abadi, Mario G., Diego G. Lambas e Patricia B. Tissera. "Cosmological Simulations with Smoothed Particle Hydrodynamics". In Examining the Big Bang and Diffuse Background Radiations, 577–78. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0145-2_87.

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Pelfrey, Brandon, e Donald House. "Adaptive Neighbor Pairing for Smoothed Particle Hydrodynamics". In Advances in Visual Computing, 192–201. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-17274-8_19.

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Atti di convegni sul tema "Smoothed particle hydrodynamics"

Raveendran, Karthik, Chris Wojtan e Greg Turk. "Hybrid smoothed particle hydrodynamics". In the 2011 ACM SIGGRAPH/Eurographics Symposium. New York, New York, USA: ACM Press, 2011. http://dx.doi.org/10.1145/2019406.2019411.

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Bender, Jan, e Dan Koschier. "Divergence-free smoothed particle hydrodynamics". In SCA '15: The ACM SIGGRAPH / Eurographics Symposium on Computer Animation. New York, NY, USA: ACM, 2015. http://dx.doi.org/10.1145/2786784.2786796.

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Harada, Takahiro, Seiichi Koshizuka e Yoichiro Kawaguchi. "Smoothed particle hydrodynamics in complex shapes". In the 23rd Spring Conference. New York, New York, USA: ACM Press, 2007. http://dx.doi.org/10.1145/2614348.2614375.

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Luehr, Charles, e Firooz Allahdadi. "Fundamentals of smoothed particle hydrodynamics (SPH)". In 32nd Aerospace Sciences Meeting and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1994. http://dx.doi.org/10.2514/6.1994-66.

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Dalrymple, Robert A., Benedict Rogers, Muthukumar Narayanaswamy, Shan Zou, Moncho Gesteira, Alejandro J. C. Crespo e Andrea Panizzo. "Smoothed Particle Hydrodynamics for Water Waves". In ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2007. http://dx.doi.org/10.1115/omae2007-29390.

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Abstract (sommario):

Smoothed Particle Hydrodynamics provides a numerical method particularly well suited to examine the breaking of water waves due to the ability of the method to cope with splash. The method is a meshfree Lagrangian method that allows the computational domain to deform with the flowing liquid. Here we discuss the appropriate kernels used in the interpolation and the time stepping alogrithms. Applications to water waves are shown.

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Xiaopeng Gao, Zhiqiang Wang, Han Wan e Xiang Long. "Accelerate Smoothed Particle Hydrodynamics using GPU". In 2010 IEEE Youth Conference on Information, Computing and Telecommunications (YC-ICT). IEEE, 2010. http://dx.doi.org/10.1109/ycict.2010.5713129.

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Ganser, M., B. van der Linden e C. G. Giannopapa. "Modeling Hypervelocity Impacts Using Smoothed Particle Hydrodynamics". In ASME 2018 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/pvp2018-84609.

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Hypervelocity impacts occur in outer space where debris and micrometeorites with a velocity of 2 km/s endanger spacecraft and satellites. A proper shield design, e.g. a laminated structure, is necessary to increase the protection capabilities. High velocities result in massive damages. The resulting large deformations can hardly be tackled with mesh based discretization methods. Smoothed Particle Hydrodynamics (SPH), a Lagrangian meshless scheme, can resolve large topological changes whereas it still follows the continuous formulation. Derived by variational principles, SPH is able to capture large density fluctuations associated with hypervelocity impacts correctly. Although the impact region is locally limited, a much bigger domain has to be discretized because of strong outgoing pressure waves. A truncation of the computational domain is preferable to save computational power, but this leads to artificial reflections which influence the real physics. In this paper, hypervelocity impact (HVI) is modelled by means of basic conservation assumptions leading to the Euler equations of fluid dynamics accompanied by the Mie-Grueneisen equation of state. The newly developed simulation tool SPHlab presented in this work utilizes the discretization method smoothed particle hydrodynamics (SPH) to capture large deformations. The model is validated through a number of test cases. Different approaches are presented for non-reflecting boundaries in order to tackle artificial reflections on a computational truncated domain. To simulate an HVI, the leading continuous equations are derived and the simulation tool SPHlab is developed. The method of characteristics allows to define proper boundary fluxes by removing the inwards travelling information. One- and two-dimensional model problems are examined which show excellent absorption behaviour. An hypervelocity impact into a laminated shield is simulated and analysed and a simple damage model is introduced to model a spallation failure mode.

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Winkler, D., M. Meister, M. Rezavand e W. Rauch. "SPHASE—Smoothed Particle Hydrodynamics in Wastewater Treatment". In World Environmental and Water Resources Congress 2016. Reston, VA: American Society of Civil Engineers, 2016. http://dx.doi.org/10.1061/9780784479889.032.

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Al-Saad, Mohammed, Sivakumar Kulasegaram e Stephane P. A. Bordas. "BLOOD FLOW SIMULATION USING SMOOTHED PARTICLE HYDRODYNAMICS". In VII European Congress on Computational Methods in Applied Sciences and Engineering. Athens: Institute of Structural Analysis and Antiseismic Research School of Civil Engineering National Technical University of Athens (NTUA) Greece, 2016. http://dx.doi.org/10.7712/100016.2409.10329.

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ZOU, SHAN, e ROBERT A. DALRYMPLE. "SEDIMENT SUSPENSION MODELING BY SMOOTHED PARTICLE HYDRODYNAMICS". In Proceedings of the 29th International Conference. World Scientific Publishing Company, 2005. http://dx.doi.org/10.1142/9789812701916_0156.

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Rapporti di organizzazioni sul tema "Smoothed particle hydrodynamics"

Swegle, J. W., S. W. Attaway, M. W. Heinstein, F. J. Mello e D. L. Hicks. An analysis of smoothed particle hydrodynamics. Office of Scientific and Technical Information (OSTI), marzo 1994. http://dx.doi.org/10.2172/10159839.

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Dalrymple, Robert A. Modeling Water Waves with Smoothed Particle Hydrodynamics. Fort Belvoir, VA: Defense Technical Information Center, settembre 2013. http://dx.doi.org/10.21236/ada597658.

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Dalrymple, Robert A. Modeling Water Waves with Smoothed Particle Hydrodynamics. Fort Belvoir, VA: Defense Technical Information Center, settembre 2011. http://dx.doi.org/10.21236/ada557148.

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Cloutman, L. D. SPH (smoothed particle hydrodynamics) simulations of hypervelocity impacts. Office of Scientific and Technical Information (OSTI), gennaio 1991. http://dx.doi.org/10.2172/6025786.

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Johnson, Jeffrey N. Simulating Magnetized Laboratory Plasmas with Smoothed Particle Hydrodynamics. Office of Scientific and Technical Information (OSTI), gennaio 2009. http://dx.doi.org/10.2172/963518.

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Swegle, J. W., e S. W. Attaway. On the feasibility of using smoothed particle hydrodynamics for underwater explosion calculations. Office of Scientific and Technical Information (OSTI), febbraio 1995. http://dx.doi.org/10.2172/48635.

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Zhu, Minjie, e Michael Scott. Two-Dimensional Debris-Fluid-Structure Interaction with the Particle Finite Element Method. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, aprile 2024. http://dx.doi.org/10.55461/gsfh8371.

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In addition to tsunami wave loading, tsunami-driven debris can cause significant damage to coastal infrastructure and critical bridge lifelines. Using numerical simulations to predict loads imparted by debris on structures is necessary to supplement the limited number of physical experiments of in-water debris loading. To supplement SPH-FEM (Smoothed Particle Hydrodynamics-Finite Element Method) simulations described in a companion PEER report, fluid-structure-debris simulations using the Particle Finite Element Method (PFEM) show the debris modeling capabilities in OpenSees. A new contact element simulates solid to solid interaction with the PFEM. Two-dimensional simulations are compared to physical experiments conducted in the Oregon State University Large Wave Flume by other researchers and the formulations are extended to three-dimensional analysis. Computational times are reported to compare the PFEM simulations with other numerical methods of modeling fluid-structure interaction (FSI) with debris. The FSI and debris simulation capabilities complement the widely used structural and geotechnical earthquake simulation capabilities of OpenSees and establish the foundation for multi-hazard earthquake and tsunami simulation to include debris.

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Prescott, Steven, Curtis Smith, Stephen Hess, Linyu Lin e Ram Sampath. Smooth Particle Hydrodynamics-based Wind Representation. Office of Scientific and Technical Information (OSTI), dicembre 2016. http://dx.doi.org/10.2172/1364522.

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Knapp, Charles E. An implicit Smooth Particle Hydrodynamic code. Office of Scientific and Technical Information (OSTI), maggio 2000. http://dx.doi.org/10.2172/754046.

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Dalrymple, Robert A. Smooth Particle Hydrodynamics for Surf Zone Waves. Fort Belvoir, VA: Defense Technical Information Center, gennaio 2008. http://dx.doi.org/10.21236/ada514686.

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