[La dualité de Tanner entre les Modèles de Fluides de Oldroyd–Maxwell et de Grade deux]
On démontre une relation asymptotique entre un modèle de fluides de grade deux et une classe de modèles de fluides non Newtoniens proposés par Oldroyd, comprenant les modèles de Maxwell de convection supérieure et convection inférieure. Ceci confirme une observation faite à l’origine par Tanner. On donne une interprétation nouvelle de l’instabilité en temps du modèle de fluides de grade deux lorsque ses coefficients sont négatifs. Notre approche inclut une démonstration simple de la convergence de la solution du modèle stationnaire de fluides de grade deux vers celle du modèle de Navier–Stokes quand (sous des hypothèses convenables) en dimension trois. Elle donne aussi une preuve de la convergence de la solution des modèles stationnaires de Oldroyd, quand ses paramètres tendent vers zéro, vers celle du modèle de Navier–Stokes.
We prove an asymptotic relationship between the grade-two fluid model and a class of models for non-Newtonian fluids suggested by Oldroyd, including the upper-convected and lower-convected Maxwell models. This confirms an earlier observation of Tanner. We provide a new interpretation of the temporal instability of the grade-two fluid model for negative coefficients. Our techniques allow a simple proof of the convergence of the steady grade-two model to the Navier–Stokes model as (under suitable conditions) in three dimensions. They also provide a proof of the convergence of the steady Oldroyd models to the Navier–Stokes model as their parameters tend to zero.
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@article{CRMATH_2021__359_9_1207_0,
author = {Girault, Vivette and Scott, L. Ridgway},
title = {Tanner {Duality} {Between} the {Oldroyd{\textendash}Maxwell} and {Grade-two} {Fluid} {Models}},
journal = {Comptes Rendus. Math\'ematique},
pages = {1207--1215},
publisher = {Acad\'emie des sciences, Paris},
volume = {359},
number = {9},
year = {2021},
doi = {10.5802/crmath.269},
language = {en},
url = {http://www.numdam.org/articles/10.5802/crmath.269/}
}
TY - JOUR AU - Girault, Vivette AU - Scott, L. Ridgway TI - Tanner Duality Between the Oldroyd–Maxwell and Grade-two Fluid Models JO - Comptes Rendus. Mathématique PY - 2021 SP - 1207 EP - 1215 VL - 359 IS - 9 PB - Académie des sciences, Paris UR - http://www.numdam.org/articles/10.5802/crmath.269/ DO - 10.5802/crmath.269 LA - en ID - CRMATH_2021__359_9_1207_0 ER -
%0 Journal Article %A Girault, Vivette %A Scott, L. Ridgway %T Tanner Duality Between the Oldroyd–Maxwell and Grade-two Fluid Models %J Comptes Rendus. Mathématique %D 2021 %P 1207-1215 %V 359 %N 9 %I Académie des sciences, Paris %U http://www.numdam.org/articles/10.5802/crmath.269/ %R 10.5802/crmath.269 %G en %F CRMATH_2021__359_9_1207_0
Girault, Vivette; Scott, L. Ridgway. Tanner Duality Between the Oldroyd–Maxwell and Grade-two Fluid Models. Comptes Rendus. Mathématique, Tome 359 (2021) no. 9, pp. 1207-1215. doi : 10.5802/crmath.269. http://www.numdam.org/articles/10.5802/crmath.269/
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