Global large solutions to 3-D inhomogeneous Navier-Stokes system with one slow variable
Global large solutions to 3-D inhomogeneous Navier-Stokes system with one slow variable
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具有一个慢变量的 3-D 非齐次纳维-斯托克斯系统的全局大解
DOI:
10.1016/j.jde.2013.09.004
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发表时间:
2013-01
期刊:
影响因子:
--
通讯作者:
Zhang, Ping
中科院分区:
文献类型:
--
作者:
Chemin, Jean-Yves;Paicu, Marius;Zhang, Ping
Under a nonlinear smallness condition on the isotropic critical Besov norm to the fluctuation of the initial density and the critical anisotropic Besov norm of the horizontal components of the initial velocity, which have to be exponentially small compared with the critical anisotropic Besov norm to the third component of the initial velocity, we investigate the global wellposedness of 3-D inhomogeneous incompressible Navier–Stokes equations (1.2) in the critical Besov spaces. The novelty of this results is that the isotropic space structure to the inhomogeneity of the initial density function is consistent with the propagation of anisotropic regularity for the velocity field. In the second part, we apply the same idea to prove the global wellposedness of (1.2) with some large data which are slowly varying in one direction.
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