Academic literature on the topic 'Prismatic polyhedron'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Prismatic polyhedron.'
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 "Prismatic polyhedron":
1
Miyazaki, Yuzuru, Naoki Igawa, and Kunio Yubuta. "Incommensurately modulated crystal structure of α′ (O′3)-type sodium cobalt oxide Na x CoO2 (x ∼ 0.78)." Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials 77, no. 3 (May 14, 2021): 371–77. http://dx.doi.org/10.1107/s205252062100370x.
Abstract:
A single-phase sample of α′ (O′3)-type layered sodium cobalt oxide Na x CoO2 (x ∼ 0.78) was prepared and its incommensurately modulated crystal structure was analyzed using the (3+1)-dimensional superspace approach to the powder neutron diffraction data. The crystal structure of the cobaltate is accurately described based on the superspace group C2/m(α0γ)00, wherein the positions of Na atoms are most significantly modulated in the monoclinic a direction to form an ordered arrangement. Such a displacive modulation causes a quasi-periodic shift of Na atoms from the centers of the NaO6 polyhedra between undulated CoO2 sheets, changing the form of the NaO6 polyhedron from an octahedral coordination (O) to a trigonal prismatic (P) one, via an intermediate capped trigonal prismatic NaO7 coordination (C). At the positions where the Na atoms are most significantly shifted, the neighboring Na atoms are located at almost touching distances. However, the occupation factor of Na atoms becomes zero at such positions, yielding Na-deficient sites V Na, sandwiched either between C and P, or C and C-type polyhedra.
2
Stetskiv, Andrij, Beata Rozdzynska-Kielbik, Renata Misztal, and Volodymyr Pavlyuk. "Grown from lithium flux, the ErCo5Si3.17silicide is a combination of disordered derivatives of the UCo5Si3and Yb6Co30P19structure types." Acta Crystallographica Section C Structural Chemistry 71, no. 6 (May 29, 2015): 506–10. http://dx.doi.org/10.1107/s2053229615009791.
Abstract:
A ternary hexaerbium triacontacobalt enneakaidecasilicide, ErCo5Si3.17, crystallizes as a combination of disordered variants of the hexagonal UCo5Si3(P63/m) and Yb6Co30P19(P-6) structure types and is closely related to the Sc6Co30Si19and Ce6Rh30Si19types. The Er, Co and three of the Si atoms occupy sites ofm.. symmetry and a fourth Si atom occupies a site of -6.. symmetry. The environment of the Er atom is a 21-vertex pseudo-Frank–Kasper polyhedron. Trigonal prismatic coordination is observed for the Si atoms. The Co atoms are enclosed in heavily deformed cuboctahedra and 11-vertex polyhedra. Crystallochemistry analysis and the data from electronic structure calculations (TB–LMTO–ASA) suggest that the Er atoms form positively charged cations which compensate the negative charge of the [Co12Si9]m−polyanions.
3
Stetskiv, Andrij, Renata Misztal, and Volodymyr Pavlyuk. "Crystal and electronic structures of La2LiGe6−x(x= 0.21) and La2LiGe4Si2." Acta Crystallographica Section C Crystal Structure Communications 68, no. 8 (July 25, 2012): i60—i64. http://dx.doi.org/10.1107/s0108270112031526.
Abstract:
The synthesis and characterization of a new ternary dilanthanum lithium hexagermanide, La2LiGe6−x(x= 0.21), belonging to the Pr2LiGe6structure type, and a quaternary dilanthanum lithium tetragermanium disilicide, La2LiGe4Si2, which crystallizes as an ordered variant of this type, are reported. In both structures, Li is on a site ofmmmsymmetry. All other atoms are on sites ofm2msymmetry. These structures are new representatives of a homologous linear structure series based on structural fragments of the AlB2, CaF2and ZrSi2structure types. The observed 17-vertex polyhedra are typical for La atoms and the environment of the Li atom is cubic. Two Ge atoms are enclosed in a tetragonal prism with one added atom (nine-vertex polyhedron). The trigonal prismatic coordination is typical for Ge or Si atoms. The metallic nature of the bonding is indicated by the interatomic distances and electronic structure calculations.
4
Amarante, Eduardo Menezes de Souza, and Edson Emanoel Starteri Sampaio. "Analysis of magnetic field components anomalies due to homogeneous polyhedrons." Brazilian Journal of Geophysics 39, no. 1 (March 6, 2021): 85. http://dx.doi.org/10.22564/rbgf.v38i3.2078.
Abstract:
ABSTRACT. A procedure for determining semi-analytical expressions for the magnetic fields caused by homogeneous polyhedral bodies based on Green's theorem has been developed. It constitutes a modification of previous developments for the gravity field of three-dimensional bodies and employs the discretization of the faces of the polyhedron by triangles and the definition of local coordinates for each triangle. A maximum misfit of less than 1.0% between the values computed with these analytical expressions and those obtained with closed expressions for prismatic bodies, applied to a homogeneous cube, demonstrates the effectiveness of the procedure. Examples of magnetic maps due to octahedral bodies with different forms and orientations show that it is possible to obtain a qualitative distinction among their anomalies. Therefore, the present analysis constitutes a basis for future inverse modeling of convex polyhedrons and will be useful in geophysical exploration.Keywords: magnetic anomalies, polyhedral bodies, irregular shapes. Análise das componentes do campo magnético produzido por um poliedro homogêneoRESUMO. Foi desenvolvido um procedimento para determinar expressões analíticas para os campos magnéticos causados por corpos poliédricos homogêneos com base no teorema de Green. Constitui uma modificação dos desenvolvimentos anteriores para o campo gravitacional de corpos tridimensionais e emprega a discretização das faces do poliedro por triângulos e a definição das coordenadas locais para cada triângulo. Um erro máximo inferior a 1,0% entre os valores calculados com essas expressões analíticas e os obtidos com expressões fechadas para corpos prismáticos, aplicados a um cubo homogêneo, demonstra a eficácia do procedimento. Exemplos de mapas magnéticos devido a corpos octaédricos com diferentes formas e orientações mostram que é possível obter uma distinção qualitativa entre suas anomalias. Portanto, a presente análise constitui uma base para futura modelagem inversa de poliedros convexos e será útil na exploração geofísica.Palavras-chaves: anomalias magnéticas, corpos poliédricos, formas irregulares. How to cite:AMARANTE EMS & SAMPAIO EES. 2021. Analysis of magnetic field components anomalies due to homogeneous polyhedrons. Brazilian Journal of Geophysics, v. 39, n. 1. doi: 10.22564/rbgf.v38i3.2078
5
Xu, Jianjun, He Xu, Dongming Yan, Kai Chen, and Degao Zou. "A Novel Calculation Method of Hydrodynamic Pressure Based on Polyhedron SBFEM and Its Application in Nonlinear Cross-Scale CFRD-Reservoir Systems." Water 14, no. 6 (March 10, 2022): 867. http://dx.doi.org/10.3390/w14060867.
Abstract:
Hydrodynamic pressure is an important factor that cannot be ignored in the seismic safety evaluation of dams. However, when the polyhedron-scaled boundary finite element method is used to simulate dams in a cross-scale dynamic analysis, polygonal surfaces often appear on the upstream face of dams, which is difficult to deal with for conventional methods of hydrodynamic pressure. In this paper, a three-dimensional calculation method of hydrodynamic pressure based on the polyhedron-scaled boundary finite element method is proposed, in which polygon (triangle, quadrilateral, pentagon, hexagon, heptagon, octagon, etc.) semi-infinite prismatic fluid elements are constructed using the mean-value shape function. The proposed method, with a high efficiency, overcomes the limitation of conventional methods in which only quadrangle or triangle boundary faces of elements are permitted. The accuracy of the proposed method is proved to be high when considering various factors. Furthermore, combined with the polyhedron-scaled boundary finite element method for a solid dam, the proposed method for reservoir water is used to develop a nonlinear dynamic coupling method for cross-scale concrete-faced rockfill dam-reservoir systems based on the polyhedron SBFEM. The results of the numerical analysis show that when the hydrodynamic pressure is not considered, the error of rockfill dynamic acceleration and displacement could reach 15.4% and 12.7%, respectively, and the error of dynamic face slabs’ stresses could be 24.9%, which is not conducive to a reasonable seismic safety evaluation of dams.
6
Hossain, G. M. Golzar, and A. J. Amoroso. "Bis[4-amino-N-(4-methylpyrimidin-2-yl-κN3)benzenesulfonamidato-κN](2,2′-bipyridine-κ2N,N′)mercury(II)." Acta Crystallographica Section E Structure Reports Online 70, no. 4 (March 8, 2014): m127—m128. http://dx.doi.org/10.1107/s1600536814004760.
Abstract:
The complete molecule of the title complex, [Hg(C11H11N4O2S)2(C10H8N2)], is generated by crystallographic twofold symmetry, with the mercury cation lying on the rotation axis. The mercury coordination polyhedron can be described as tetrahedral (from theN,N′-bidenate bipyridine molecule and the sulfonamide N atoms of the sulfamerazine anions) or as squashed trigonal-prismatic, if two long (> 2.80 Å) Hg—N bonds to pyrimidine N atoms are included. The dihedral angle between the aromatic rings in the anion is 73.3 (2)°. In the crystal, N—H...(N,O) and N—H...N hydrogen bonds link the molecules into a three-dimensional network.
7
Prytula-Kurkunova, Angelina Yu, Victor A. Trush, Viktoriya V. Dyakonenko, Tetyana Yu Sliva, and Vladimir M. Amirkhanov. "Tris(N-{bis[methyl(phenyl)amino]phosphoryl}benzenesulfonamidato-κ2O,O′)(1,10-phenanthroline-κ2N,N′)lanthanum(III)." Acta Crystallographica Section E Crystallographic Communications 73, no. 7 (June 27, 2017): 1076–81. http://dx.doi.org/10.1107/s2056989017008970.
Abstract:
The asymmetric unit of [La(C20H21N3O3PS)3(C12H8N2)] is created by one LaIIIion, three deprotonatedN-{bis[methyl(phenyl)amino]phosphoryl}benzenesulfonamidate (L−) ligands and one 1,10-phenanthroline (Phen) molecule. Each LaIIIion is eight-coordinated (6O+2N) by three phosphoryl O atoms, three sulfonyl O atoms of threeL−ligands and two N atoms of the chelating Phen ligand, leading to the formation of six- and five-membered metallacycles, respectively. The lanthanum coordination polyhedron has a bicapped trigonal–prismatic geometry. `Sandwich-like' intramolecular π–π stacking interactions are observed between the 1,10-phenanthroline ligand and two benzene rings of two differentL−ligands. The phenyl rings ofL−that are not involved in the stacking interactions show minor positional disorder. Molecules form layers parallel to the (010) plane due to weak C—H...O intermolecular hydrogen bonds. Unidentified highly disordered solvate molecules that occupyca400 Å3large voids have been omitted from the refinement model.
8
Shah, Jay A., Samuel R. Miller, Shaphan R. Jernigan, and Gregory D. Buckner. "A Permanent Magnet Synchronous Spherical Motor for High-Mobility Servo-Actuation." Machines 10, no. 8 (July 26, 2022): 612. http://dx.doi.org/10.3390/machines10080612.
Abstract:
The development of direct-drive spherical motors offers a potential solution to the limitations of conventional multiple degree-of-freedom (DOF) actuators, which typically utilize single-DOF joints (rotational and/or prismatic), arranged in series or parallel and powered by multiple single-DOF actuators. These configurations can be accompanied by kinematic singularities, backlash, limited power density and efficiency, and computationally expensive inverse kinematics. This paper details the design, fabrication and experimental testing of permanent magnet synchronous spherical motors (PMSSM) for multi-DOF servo-actuation. Its stator-pole arrangement is based on a Goldberg polyhedron, with each pole comprised of hexagonal or pentagonal inner and outer plates. The stator geometry and winding configurations are optimized using electromagnetic finite element analysis. A custom-made controller board includes a microcontroller, servo drivers, a wireless serial interface, and a USB PC interface. Angular orientation is sensed using an inertial measurement unit in wireless communication with the microcontroller. A PID controller is implemented and demonstrated for time-varying reference trajectories.
9
Gourdon, O., V. Petricek, and M. Evain. "A new structure type in the hexagonal perovskite family; structure determination of the modulated misfit compound Sr9/8TiS3." Acta Crystallographica Section B Structural Science 56, no. 3 (June 1, 2000): 409–18. http://dx.doi.org/10.1107/s0108768100002160.
Abstract:
Sr9/8TiS3, strontium titanium sulfide, a new phase in the hexagonal perovskite-like Sr x TiS3 system, has been prepared and its structure solved from single-crystal X-ray data within the (3 + 1)-dimensional [(3 + 1)D] formalism. Sr9/8TiS3 crystallizes with trigonal symmetry [R3¯m(00γ)0s superspace group], with the following lattice parameters: a s = 11.482 (3), c s = 2.9843 (8) Å, q = 0.56247 (7)c* and V s = 340.7 (3) Å3. The structure was considered as commensurate [R3¯c three-dimensional (3D) space group], but refined within the (3 + 1)D formalism to a residual factor R = 2.79% for 64 parameters and 1084 independent reflections. Original crenel functions were used for the sulfur and strontium description. The structure is different from that of the hexagonal perovskite-like oxide counterparts. The main difference is related to the presence of a new type of polyhedron in the [MS3] transition metal chains, intermediate between the octahedra classically found in such chains and the trigonal prismatic sites encountered in the oxides.
10
Stamatatos, Theocharis C., Eugenia Katsoulakoua, Vassilios Nastopoulos, Catherine P. Raptopoulou, Evy Manessi-Zoupa, and Spyros P. Perlepes. "Cadmium Carboxylate Chemistry: Preparation, Crystal Structure, and Thermal and Spectroscopic Characterization of the One-dimensional Polymer [Cd(O2CMe)(O2CPh)(H2O)2]n." Zeitschrift für Naturforschung B 58, no. 11 (November 1, 2003): 1045–54. http://dx.doi.org/10.1515/znb-2003-1103.
Abstract:
Compound [Cd(O2CMe)(O2CPh)(H2O)2]n (1) was initially obtained in a serendipitous way during efforts to prepare a CdII /PhCO2 −/bepy complex (bepy = 2-benzoylpyridine). With the identity of 1 established by single-crystal X-ray crystallography, a rational preparative route to this complex was designed and carried out by reacting Cd(O2CMe)2·2H2O with a slight excess of PhCOOH in MeCN under reflux. The crystal structure of 1 consists of isolated zig-zag chains. The CdII atom is coordinated to five carboxylate and two aqua oxygen atoms creating a distorted, capped trigonal prismatic coordination polyhedron. The acetate group exhibits the η1:η2:μ2 coordination mode, while the benzoate ligand is chelating. There is an extensive hydrogen-bonding network which reinforces the chains and also links them generating sheets. The new complex was characterized by IR, far-IR, Raman, CP MAS and solution 113Cd NMR spectroscopy. The spectroscopic data are discussed in terms of the nature of bonding and the known structure. An anhydrous compound with the empirical formula Cd(O2CMe)(O2CPh) was isolated during the thermal decomposition of 1; the vibrational study of this thermally stable intermediate supports an 1D polymeric structure with 6-coordinate CdII ions.
Dissertations / Theses on the topic "Prismatic polyhedron":
1
García, Gómez Sonia C. "Allocation et optimisation de tolérances géométriques par des polyédres prismatiques." Electronic Thesis or Diss., Bordeaux, 2023. http://www.theses.fr/2023BORD0504.
Abstract:
Les écarts géométriques et dimensionnels des pièces mécaniques peuvent causer des perturbations nuisibles aux fonctionnalités attendues des systèmes mécaniques. Les spécifications géométriques et dimensionnelles représentent les limites des défauts de fabrication des surfaces fabriquées. La détermination des tolérances n’est pas une tâche aisée car (i) les valeurs des tolérances assignées affectent les fonctionnalités attendues d’un système et le coût de fabrication de ses pièces, et (ii) l'interdépendance des tolérances et des jeux rend complexe leur agrégation dans une résultante.L’analyse de tolérances et la synthèse de tolérances sont les deux méthodes classiques pour aborder la détermination de la résultante. La synthèse de tolérances est traditionnellement considérée comme un ``problème d’optimisation sous contraintes'' dans lequel la fonction objectif est généralement une fonction de coût, une fonction de qualité ou de coût-qualité.Dans le cas des mécanismes hyperstatiques, la complexité de l'interaction des tolérances ne permet pas de décrire la résultante par une fonction analytique. Par conséquent, il est courant d’effectuer une allocation de tolérances au lieu d’une synthèse de tolérances. L’objectif de l’allocation de tolérances est de maximiser les tolérances et les jeux initialement déterminés selon des retours d'expériences ou des connaissances empiriques, en incorporant certaines méthodes heuristiques d’optimisation.Dans ce travail, nous montrons comment effectuer une allocation de tolérances en utilisant l’approche polyédrique prismatique comme modèle de tolérances et le recuit simulé comme algorithme d’optimisation heuristique. Pour ce faire, certains problèmes intermédiaires sont discutés, tels que la qualité des opérandes versus le temps de calcul. Une méthode de réduction de modèle et un indicateur permettant de quantifier la conformité d’un mécanisme vis-à-vis d'une condition fonctionnelle sont également introduitsGeometric and dimensional deviations of mechanical components can cause problems of assemblability and/or functionality of the mechanisms. The geometric and dimensional specifications represent the limits of the manufacturing defects of a given surface. Tolerance specification is not an easy task because (i) the assigned tolerance values affect the functionalities of a system and the manufacturing cost of its parts, and (ii) design tolerances are often interrelated and contribute to a resultant tolerance.Tolerance analysis and tolerance synthesis are the two typical ways to approach the problem of tolerance design. Tolerance synthesis is traditionally seen as a "constrained optimization problem" in which the objective function is usually a cost function, a quality function or a cost-quality.In the case of over-constrained mechanisms, the interaction of the tolerances is complex and it is not possible to describe it by means of an analytical function. Hence, it is typical to do tolerance allocation instead of tolerance synthesis. The objective of the tolerance allocation is then to complete or augment the tolerance specification, originally made from experience or empirical knowledge, by incorporating some heuristics or optimization methods.In this work we show how to do tolerance allocation using the prismatic polyhedral approach as tolerance model and the simulated annealing as the heuristic optimization algorithm. In order to do this, some intermediate problems are discussed, such us (i) quality of the operands, (ii) computational time required to do a simulation and we also develop (iii) an indicator to quantify the compliance of a mechanism with its functional condition
Book chapters on the topic "Prismatic polyhedron":
1
Menon, Sandeep, and Thomas Gessner. "A Method for Adaptive Anisotropic Refinement and Coarsening of Prismatic Polyhedra." In Lecture Notes in Computational Science and Engineering, 219–38. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-40594-5_10.
Conference papers on the topic "Prismatic polyhedron":
1
Salpeter, Nathaniel O., and Yassin A. Hassan. "Numerical Simulation Using Realizable k-e Turbulence Model of Jet Flow Mixing Within Rod Bundles." In 16th International Conference on Nuclear Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/icone16-48854.
Abstract:
In this investigation, a steady state simulation of jet mixing in a rod bundle with varied jet Reynolds numbers was performed with CD-Adapco’s Star-CCM+ computational fluid dynamics (CFD) code utilizing the realizable k-ε turbulence model and two-layer y+ wall treatment. The goal of the work is to investigate the ability of the realizable k-ε turbulence model to predict phenomena expected in the exit plenum of the prismatic gas cooled reactor as well as provide a benchmark for future numerical investigation into the validity of certain turbulence models for rod bundle simulation. Numerical results were qualitatively verified against available experimental data [6]. Two injection sites were present in the rod bundle with impingement of the jets on the lower plane of the domain. The Reynolds numbers specified for the inlets varied between 6,300 and 12,700 for different cases. A mesh of over four million polyhedron cells was generated to capture critical flow characteristics within the domain. Polyhedral cells were chosen for this application because they provided a better quality mesh and reduced the total number of cells necessary to achieve accurate results [4]. The simulations carried out were defined as having reached a converged solution when all residuals reduced to less than 10−5. The simulation of the flow in the rod bundle was successful in providing insight into locations of some key recirculation zones and the dependence they have on inlet conditions. The comparison between numerical and experimental results showed similar key flow patterns as well as aided in possible points of focus for future investigation. The information obtained and conclusions drawn will be critical in future numerical benchmarks in this area of research.
2
Genc, Suat, Robert W. Messler, Gary A. Gabriele, and Paul R. Bonenberger. "Numerating Possible Design Options for Integral Attachment." In ASME 1996 Design Engineering Technical Conferences and Computers in Engineering Conference. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-detc/dtm-1512.
Abstract:
Abstract Proliferation of plastic in parts, and the ability to mold such parts of great complexity at little cost penalty, has resulted in growing use of integral attachments (or so called snap-fits) in designs. The diversity of integral attachment features and the potential applications of this assembly method have made it appear that design possibilities may be unbounded. This paper extends an “attachment level” methodology first articulated by researchers at General Motors by enumerating all possible design options for 2-D (rectilinear) and 3-D (prismatic) polyhedral as well as 2-D and 3-D curvilinear parts using a recently developed hierarchical classification scheme. It was found that there are only 343 possible interface combinations that will allow attachment, of which only 150 are totally unique if one recognizes the interchangeability of attachment features between mating components comprising the assembly. Thus, for a seemingly infinite or unbounded group of possible real integral attachment applications, the choices are, in fact, limited to a quite manageable number. This allows designers to truly optimize a design by considering literally every possibility after working down through the classification hierarchy.
3
Salpeter, Nathaniel O., and Yassin A. Hassan. "Numerical Simulations of Jet Flow Mixing Within Rod Bundles." In Fourth International Topical Meeting on High Temperature Reactor Technology. ASMEDC, 2008. http://dx.doi.org/10.1115/htr2008-58321.
Abstract:
The goal of the work is to investigate the abilities of the realizable k-ε and the k-ω turbulence models to predict phenomena expected in the lower plenum of the prismatic gas cooled reactor by benchmarking them against one another as well as verifying them against available experimental data [6]. Simulations were performed with CD-Adapco’s Star-CCM+ computational fluid dynamics (CFD) code utilizing the steady state approximation of the realizable k-ε turbulence model and the unsteady RANS approximations of the shear stress transport (SST) k-ω turbulence model. The unsteady results were averaged over a period of time corresponding to one full fluctuation cycle of the phenomena present with the lowest frequency. A case with a single jet of Reynolds number 12,700 was simulated as well as a case with dual jets of Reynolds numbers 6,300 and 12,700. Impingement of the jets occurred on the lower plane of the setup as occurs in the lower plenum. A two-layer shear driven [8] y+ wall treatment was used to satisfy the boundary layer profile. A mesh of 8.6 million polyhedral cells was generated to capture critical flow characteristics within the domain. Polyhedral cells were chosen for this application because they provided a better quality mesh and reduced the total number of cells necessary to achieve accurate results [4]. The simulations carried out were defined as having reached a converged solution when all residuals reduced to less than 10−5. The simulations of the flow in the rod bundle were successful in providing insight into locations of some key recirculation zones and the dependence they have on inlet conditions. The comparison between numerical and experimental results showed similar key flow patterns as well as aided in possible points of focus for future investigation. The information obtained and conclusions drawn will be critical in future numerical benchmarks in this area of research.
4
Bhandari, Neelesh, and Murali Damodaran. "Computational Study of a Low Cost Rope Washer Pump for Brine Pumping Application in Rural Areas." In ASME 2014 4th Joint US-European Fluids Engineering Division Summer Meeting collocated with the ASME 2014 12th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/fedsm2014-21152.
Abstract:
The rope washer pump is a hydraulic device in which the rope consisting of equally spaced washers is pulled upward to displace the fluid volume to the desired head before delivering it at the outlet. The straightforward working principle, the ease of manufacture, and the low cost are the main advantages of this pump over a reciprocating pump. The rope washer pump can be either driven by electric motor, by a wind mill, or manually for pumping brine water for salt harvesting in rural areas. In this study computational fluid dynamics (CFD) modeling of the rope washer pump is used to estimate the performance characteristics of the pump. Experimental studies of rope pump can only provide data related to flow rate and head it can achieve, while using CFD it is possible to obtain insight about the flow physics inside the pump. These insights can be used to propose design improvements for more efficient pump operation. Unsteady, incompressible Navier-Stokes equations are solved using a finite volume scheme on unstructured hybrid polyhedral-prismatic overset meshes to obtain flow parameters and the volume of fluid (VOF) interface tracking method is used to capture the free water surface inside the pump by tracking the volume fraction of fluid on each cell. The k-ε turbulence model is used to model turbulence and the motion of the washer is handled by using overset mesh technique for the computation. Leakage between the washer and housing is also considered in this computation. Pump characteristics are calculated for different pump speeds. Thus the flow variables obtained by computation are used to predict the efficiency and flow rate at different washer speed. The pump characteristics define the behavior of the rope washer and are characterized by effective flow rate, volumetric efficiency, power input and the pump torque. These performance characteristics are extracted from the computed flow fields and used for evaluating the optimum range of pump speed, with highest efficiency and flow-rate. This model can serve as a basis for future design optimization studies.