Nonlinear Hyperbolic Problems: Proceedings of an Advanced by Said Benachour, Alain Yves Le Roux, Marie Noëlle Le Roux

By Said Benachour, Alain Yves Le Roux, Marie Noëlle Le Roux (auth.), Claude Carasso, Pierre Charrier, Bernard Hanouzet, Jean-Luc Joly (eds.)

The papers integrated during this lawsuits quantity are often unique study papers, facing life-span of waves, nonlinear interplay of waves, and diverse purposes to fluid mechanics.

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Extra info for Nonlinear Hyperbolic Problems: Proceedings of an Advanced Research Workshop held in Bordeaux, France, June 13–17, 1988

Example text

The early work of HPP used a square lattice with particles hoping from one node to one of its nearest neighbour. Particles are undistinguishable so that instead of using a lagrangian description, as it is commonly done in molecular dynamics, an eulerian description is preferred. The system is fully determined b y t h e set of numbers hi(r/, tk) where i • { 1 , . . , 4} represents the four directions of space from one node to its four nearest neighbours and r j labels the nodes of the lattice. An additional assumption, which simplifies the subsequent numerical simulations, is the introduction of a Boolean character for the particles, which means that any of the numbers ni is equal to 0 or 1.

La version curviligne du schema de Godounov 2-D est sensiblement plus complexe. 41 Un rep~re curviligne chaque pas de temps. intrins~ques [resp. local (~, n) est d~fini pour chaque maille en d~but de Les ~quations de vitesse (~k' ~n ) [resp. q]. Les schemas num~riques cart~sien, par d'Euler integration second membre des ~quations sur sont consid~r~es (~k' Pn )] pour chaque ligne de coordonn~e grille variable l'~l~ment de de l'impulsion, coordonn@e et de la non-orthogonalit~ selon les composantes est alors b~ti comme dans le cas volume.

GODOUNOV et al. "R~solution des probl~mes multidimensionnels de la dynamique des gaz" Edition Mir, Moscou (1979). 131 H. JOURDREN "Rencontre 87 CEA/DAM-LANL" - preprint (1987). 141 A. HARTEN J. Comput. Phys. 49 (1983), 357. K. SWEBY SIAM J. Numer. Anal. 21 (1984), 995. F. NOH J. Comput. Phys. 72 (1988), 78. /7/ B. VAN LEER J. Comput. Phys. 32 (1979), i01. /8/ C. CHERFILS Th&se PARIS Vl (1988). REVIEW OF F L O W SIMULATIONS USING LATTICE GASES D. d'Humi~res, P. H. Qian Laboratoire de Physique Statistique associ@ au CNRS et k l'Universit~ Pierre et Marie Curie Ecole Normale Sup~rieure 24 Rue Lhomond 75231 Paris Cedex 05 Abstract Lattice gases are first defined as a new way to perform molecular dynamics calculations in a simplified manner but at large speeds thus allowing to consider enough particles to simulate real flows.

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