[Une correction entropique non paramétrique simple pour les solveurs de Riemann approchés]
On présente dans cette note une correction entropique non paramétrique simple et générale pour la simulation d'écoulements de fluides comportant des points soniques en zone de détente. Celle-ci permet d'accroître la stabilité et la précision de solveurs de Riemann approchés. Cette correction est aussi appliquée aux équations de la MHD idéale.
We present here a simple and general non-parametrized entropy-fix for the computation of fluid flows involving sonic points in rarefaction waves. It enables to improve the stability and the accuracy of approximate Riemann solvers. It is also applied to MHD flows.
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Mots-clés : Mécanique des fluides numérique, Solveur de Riemann approché, Correction entropique
Philippe Helluy 1 ; Jean-Marc Hérard 2 ; Hélène Mathis 1 ; Siegfried Müller 3
@article{CRMECA_2010__338_9_493_0, author = {Philippe Helluy and Jean-Marc H\'erard and H\'el\`ene Mathis and Siegfried M\"uller}, title = {A simple parameter-free entropy correction for approximate {Riemann} solvers}, journal = {Comptes Rendus. M\'ecanique}, pages = {493--498}, publisher = {Elsevier}, volume = {338}, number = {9}, year = {2010}, doi = {10.1016/j.crme.2010.07.007}, language = {en}, }
TY - JOUR AU - Philippe Helluy AU - Jean-Marc Hérard AU - Hélène Mathis AU - Siegfried Müller TI - A simple parameter-free entropy correction for approximate Riemann solvers JO - Comptes Rendus. Mécanique PY - 2010 SP - 493 EP - 498 VL - 338 IS - 9 PB - Elsevier DO - 10.1016/j.crme.2010.07.007 LA - en ID - CRMECA_2010__338_9_493_0 ER -
%0 Journal Article %A Philippe Helluy %A Jean-Marc Hérard %A Hélène Mathis %A Siegfried Müller %T A simple parameter-free entropy correction for approximate Riemann solvers %J Comptes Rendus. Mécanique %D 2010 %P 493-498 %V 338 %N 9 %I Elsevier %R 10.1016/j.crme.2010.07.007 %G en %F CRMECA_2010__338_9_493_0
Philippe Helluy; Jean-Marc Hérard; Hélène Mathis; Siegfried Müller. A simple parameter-free entropy correction for approximate Riemann solvers. Comptes Rendus. Mécanique, Volume 338 (2010) no. 9, pp. 493-498. doi : 10.1016/j.crme.2010.07.007. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2010.07.007/
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