Results 41 to 50 of about 29,989 (286)

A discretized integral hydrodynamics [PDF]

, 1997
Using an interpolant form for the gradient of a function of position, we write an integral version of the conservation equations for a fluid. In the appropriate limit, these become the usual conservation laws of mass, momentum and energy. We also discuss
A. W. Lees, B. Alder, C. A. Marsh, C. A. Marsh, C. W. Gardiner, D. C. Rapaport, D. C. Rapaport, D. H. Rothman, E. S. Boek, F. J. Alexander, H. A. Posch, H. A. Posch, H. Takeda, J. J. Monaghan, J. M. V. A. Koelman, J. Miguel Rubí, L. B. Lucy, L. D. Libersky, L. Landau, L. Lifshitz, M. Malek Mansour, M. Mareschal, P. Español, P. Español, P. J. Hoogerbrugge, P. V. Conveney, R. Benzi, U. Frisch, Víctor Romero-Rochín, W. van Saarloos   +29 more
core   +3 more sources

An Improved Conservative Hybrid Method with Adaptive Mesh Refinement for Passive-Scalar Transport on Deforming Interfaces

Mathematics
This paper presents an improved hybrid Eulerian–Lagrangian framework, which has been augmented with an adaptive mesh refinement technique, for simulating passive scalar transport on deforming interfaces. We capture interface deformation using an Eulerian
Yu Fan, Chunyan Liu
doaj   +1 more source

Conservative, special-relativistic smoothed particle hydrodynamics

, 2010
We present and test a new, special-relativistic formulation of Smoothed Particle Hydrodynamics (SPH). Our approach benefits from several improvements with respect to earlier relativistic SPH formulations.
Anile, Anile, Anninos, Balsara, Benz, Celotti, Cha, Chow, Del Zanna, Dolag, Dolezal, Donat, Dubal, Eltgroth, Falle, Fock, Gallant, Gingold, Inutsuka, Kheyfets, Laguna, Liang, Lucy, Mann, Mann, Marquina, Marti, Marti, Marti, Monaghan, Monaghan, Monaghan, Monaghan, Monaghan, Monaghan, Morris, Nelson, Norman, Piran, Press, Read, Rosswog, Rosswog, Rosswog, Rosswog, Siegler, Springel, Stephan Rosswog, Taub, Wen   +49 more
core   +1 more source

Embedding Lagrangian Sink Particles in Eulerian Grids [PDF]

, 2003
We introduce a new computational method for embedding Lagrangian sink particles into an Eulerian calculation. Simulations of gravitational collapse or accretion generally produce regions whose density greatly exceeds the mean density in the simulation ...
Klein, Richard I., Krumholz, Mark R., McKee, Christopher F.   +2 more
core   +2 more sources

rpSPH: a novel Smoothed Particle Hydrodynamics Algorithm

, 2010
We suggest a novel discretisation of the momentum equation for Smoothed Particle Hydrodynamics (SPH) and show that it significantly improves the accuracy of the obtained solutions.
Agertz, Attwood, Balsara, Bryan, Børve, Chandrasekhar, Cummins, Dolag, Dolag, Evrard, Frenk, Fryer, Fryxell, Gingold, Graham, Herant, Hess, Hu, Imaeda, Kitsionas, Landau, Lombardi, Lucy, Mitchell, Monaghan, Monaghan, Monaghan, Monaghan, Morris, Morris, Pfrommer, Phillips, Price, Price, Price, Rafiee, Rasio, Read, Ritchie, Robertson, Rosswog, Schuessler, Sod, Springel, Springel, Springel, Steinmetz, Stone, Stone, Swegle, Tom Abel, Vaughan, Wadsley, Wadsley, Xu   +54 more
core   +1 more source

Smoothed Particle Hydrodynamics in cosmology: a comparative study of implementations [PDF]

, 1998
We analyse the performance of twelve different implementations of Smoothed Particle Hydrodynamics (SPH) using seven tests designed to isolate key hydrodynamic elements of cosmological simulations which are known to cause the SPH algorithm problems.
Couchman, H. M. P., Pearce, F. R., Thacker, R. J., Thomas, P. A., Tittley, E. R.   +4 more
core   +4 more sources

Numerical Modeling of Tank Cars Carrying Hazardous Materials With and Without Composite Metal Foam

Advanced Engineering Materials, EarlyView.
Large‐scale puncture models consisting of hazardous materials (HAZMATs) tank car with protective steel–steel composite metal foam (S–S CMF) are solved numerically. Tank car plate with added 10.91–13.33 mm thick S–S CMF layer does not puncture. Protective S–S CMF absorbs impact energy, reduces plate deformation, and prevents shear bands formation ...
Aman Kaushik, Afsaneh Rabiei
wiley   +1 more source

An Intelligent SPH Framework Based on Machine-Learned Residual Correction for Elliptic PDEs

Algorithms
We present an intelligent, non-intrusive framework to enhance the performance of Symmetric Smoothed Particle Hydrodynamics (SSPH) for elliptic partial differential equations, focusing on the linear and nonlinear Poisson equations.
Ammar Qarariyah, Tianhui Yang, Fang Deng
doaj   +1 more source

Extensive overview of soil constitutive relations and applications for geotechnical engineering problems

Heliyon, 2023
A state-of-the-art review has been conducted in this work on soil constitutive modeling, which has emphasized on: soil type, ground-water conditions, loading conditions, structural behavior, constitutive relation discipline, and dimensions.
Kennedy C. Onyelowe, Ahmed M. Ebid, Evangelin Ramani Sujatha, Farid Fazel-Mojtahedi, Ali Golaghaei-Darzi, Denise-Penelope N. Kontoni, Nabaz Nooralddin-Othman   +6 more
doaj   +1 more source

Kelvin-Helmholtz instabilities in Smoothed Particle Hydrodynamics

, 2010
In this paper we investigate whether Smoothed Particle Hydrodynamics (SPH), equipped with artificial conductivity, is able to capture the physics of density/energy discontinuities in the case of the so-called shearing layers test, a test for examining ...
Agertz, Chandrasekhar, Cummins, Dubey, E. Rödiger, Fryxell, Fulk, Gingold, H. Dejonghe, Hess, Hu, Johnson, Kawata, Lucy, Merlin, Monaghan, Monaghan, Morris, Okamoto, Price, Read, Robertson, Rosswog, S. De Rijcke, S. Valcke, Schuessler, Sigalotti, Sod, Springel, Springel, Tartakovsky, Tasker, Thomas, Vanaverbeke   +33 more
core   +1 more source