On étudie la stabilité faible pour le système de Navier–Stokes : si une suite de données de Cauchy , bornée dans un espace invariant par échelle, converge faiblement vers une donnée engendrant une solution globale régulière, est-ce que engendre une solution globale régulière ? À cause des invariances de l'équation de Navier–Stokes, une réponse positive en toute généralité à cette question impliquerait la régularité globale pour toutes les données. Dans ce travail, nous fournissons une réponse positive dans le cadre d'un nouveau concept de convergence faible. La preuve est basée sur des décompositions en profils dans des espaces anisotropes et leur propagation par les équations de Navier–Stokes.
We study a weak stability problem for the three-dimensional Navier–Stokes system: if a sequence of initial data, bounded in some scaling invariant space, converges weakly to an initial data which generates a global regular solution, does generate a global regular solution? Because of the invariances of the Navier–Stokes equations, a positive answer in general to this question would imply global regularity for any data, so we introduce a new concept of weak convergence (rescaled weak convergence) under which we are able to give a positive answer. The proof relies on profile decompositions in anisotropic spaces and their propagation by the Navier–Stokes equations.
Accepté le :
Publié le :
@article{CRMATH_2014__352_4_305_0, author = {Bahouri, Hajer and Chemin, Jean-Yves and Gallagher, Isabelle}, title = {Stability by rescaled weak convergence for the {Navier{\textendash}Stokes} equations}, journal = {Comptes Rendus. Math\'ematique}, pages = {305--310}, publisher = {Elsevier}, volume = {352}, number = {4}, year = {2014}, doi = {10.1016/j.crma.2014.02.007}, language = {en}, url = {http://www.numdam.org/articles/10.1016/j.crma.2014.02.007/} }
TY - JOUR AU - Bahouri, Hajer AU - Chemin, Jean-Yves AU - Gallagher, Isabelle TI - Stability by rescaled weak convergence for the Navier–Stokes equations JO - Comptes Rendus. Mathématique PY - 2014 SP - 305 EP - 310 VL - 352 IS - 4 PB - Elsevier UR - http://www.numdam.org/articles/10.1016/j.crma.2014.02.007/ DO - 10.1016/j.crma.2014.02.007 LA - en ID - CRMATH_2014__352_4_305_0 ER -
%0 Journal Article %A Bahouri, Hajer %A Chemin, Jean-Yves %A Gallagher, Isabelle %T Stability by rescaled weak convergence for the Navier–Stokes equations %J Comptes Rendus. Mathématique %D 2014 %P 305-310 %V 352 %N 4 %I Elsevier %U http://www.numdam.org/articles/10.1016/j.crma.2014.02.007/ %R 10.1016/j.crma.2014.02.007 %G en %F CRMATH_2014__352_4_305_0
Bahouri, Hajer; Chemin, Jean-Yves; Gallagher, Isabelle. Stability by rescaled weak convergence for the Navier–Stokes equations. Comptes Rendus. Mathématique, Tome 352 (2014) no. 4, pp. 305-310. doi : 10.1016/j.crma.2014.02.007. http://www.numdam.org/articles/10.1016/j.crma.2014.02.007/
[1] On the stability of global solutions to Navier–Stokes equations in the space, J. Math. Pures Appl., Volume 83 (2004), pp. 673-697
[2] Stability by rescaled weak convergence for the Navier–Stokes equations | arXiv
[3] Fourier Analysis and Nonlinear Partial Differential Equations, Grundlehren der mathematischen Wissenschaften, vol. 343, Springer, Berlin, Heidelberg, 2011
[4] A general wavelet-based profile decomposition in the critical embedding of function spaces, Confluentes Math., Volume 3 (2011), pp. 1-25
[5] On the stability in weak topology of the set of global solutions to the Navier–Stokes equations, Arch. Ration. Mech. Anal., Volume 209 (2013), pp. 569-629
[6] High-frequency approximation of solutions to critical nonlinear wave equations, Amer. J. Math., Volume 121 (1999), pp. 131-175
[7] Large, global solutions to the Navier–Stokes equations, slowly varying in one direction, Trans. Amer. Math. Soc., Volume 362 (2010) no. 6, pp. 2859-2873
[8] Sums of large global solutions to the incompressible Navier–Stokes equations, J. Reine Angew. Math., Volume 681 (2013), pp. 65-82
[9] The role of spectral anisotropy in the resolution of the three-dimensional Navier–Stokes equations | arXiv
[10] Asymptotics and stability for global solutions to the Navier–Stokes equations, Ann. Inst. Fourier, Volume 53 (2003), pp. 1387-1424
[11] Description du défaut de compacité de l'injection de Sobolev, ESAIM Control Optim. Calc. Var., Volume 3 (1998), pp. 213-233
[12] Resolution of the Navier–Stokes equations in anisotropic spaces, Rev. Mat. Iberoam., Volume 15 (1999) no. 1, pp. 1-36
[13] Analysis of the lack of compactness in the critical Sobolev embeddings, J. Funct. Anal., Volume 161 (1999), pp. 384-396
[14] Recent Developments in the Navier–Stokes Problem, Research Notes in Mathematics, vol. 43, Chapman and Hall/CRC Press, 2002
[15] Essai sur le mouvement d'un liquide visqueux emplissant l'espace, Acta Math., Volume 63 (1933), pp. 193-248
[16] Étude de diverses équations intégrales non linéaires et de quelques problèmes que pose l'hydrodynamique, J. Math. Pures Appl., Volume 12 (1933), pp. 1-82
[17] Équation anisotrope de Navier–Stokes dans des espaces critiques, Rev. Mat. Iberoam., Volume 21 (2005) no. 1, pp. 179-235
Cité par Sources :