[A particle method for solving Richardsʼ equation]
Under some specific assumptions, the flow of the water in unsaturated porous media can be represented by the Richards equation. However the strong non-linearity of the Richards equation constitutes a difficult obstacle for such simulations. This work presents a complete solution of the problem based on two alternative deterministic schemes for the particle methods, Particle Strength Exchange and Diffusion Velocity. These two methods are used to compute the motion of an initially spherical wet region embedded in an otherwise low humidity zone. These results are compared to that of the finite element code NAPL. It is shown that each method provide a useful alternative to more classical grid methods.
Sous certaines hypothèses, lʼécoulement de lʼeau dans des sols partiellement saturés peut être décrit par lʼéquation de Richards. Ce travail présente une solution complète du problème basée sur deux méthodes particulaires déterministes classiques, Particle Strength Exchange et Vitesse de Diffusion. Ces deux méthodes sont appliquées au probléme de la migration dʼune bulle dʼhumidité dans un milieu poreux dʼhumidité faible. Les résultats sont comparés à ceux fournis par le code NAPL et montrent que chacune de ces méthodes est une alternative intéressante aux méthodes classiques avec maillage.
Accepted:
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Keywords: Porous media, Unsaturated porous media, Richardsʼ equation, Particle method
Anthony Beaudoin 1; Serge Huberson 2; Elie Rivoalen 3
@article{CRMECA_2011__339_4_257_0, author = {Anthony Beaudoin and Serge Huberson and Elie Rivoalen}, title = {Une m\'ethode particulaire pour r\'esoudre l'\'equation de {Richards}}, journal = {Comptes Rendus. M\'ecanique}, pages = {257--261}, publisher = {Elsevier}, volume = {339}, number = {4}, year = {2011}, doi = {10.1016/j.crme.2011.01.005}, language = {fr}, }
TY - JOUR AU - Anthony Beaudoin AU - Serge Huberson AU - Elie Rivoalen TI - Une méthode particulaire pour résoudre lʼéquation de Richards JO - Comptes Rendus. Mécanique PY - 2011 SP - 257 EP - 261 VL - 339 IS - 4 PB - Elsevier DO - 10.1016/j.crme.2011.01.005 LA - fr ID - CRMECA_2011__339_4_257_0 ER -
Anthony Beaudoin; Serge Huberson; Elie Rivoalen. Une méthode particulaire pour résoudre lʼéquation de Richards. Comptes Rendus. Mécanique, Volume 339 (2011) no. 4, pp. 257-261. doi : 10.1016/j.crme.2011.01.005. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2011.01.005/
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