Global existence and optimal convergence rates of solutions for 3D compressible magneto-micropolar fluid equations

Global existence and optimal convergence rates of solutions for 3D compressible magneto-micropolar fluid equations
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3D可压缩磁微极流体方程解的全局存在性和最优收敛速度

DOI:
10.1016/j.jde.2017.04.002
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发表时间:
2017-09
影响因子:
2.4
通讯作者:
Yin Li
Yin Li
中科院分区:
数学2区
文献类型:
--
作者:
Ruiying Wei;Boling Guo;Yin Li

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研究了三维可压缩磁微极流体方程的柯西问题。在初始数据为某定常状态的小扰动的条件下,建立了全局时光滑解的存在性。此外,当初始扰动在H - 3范数很小且在L - 1范数有界时,我们将线性化方程的L -L - q估计与傅里叶分裂方法相结合,得到了解的高阶空间导数的时间衰减率。
The Cauchy problem for the three-dimensional compressible magneto-micropolar fluid equations is considered. Existence of global-in-time smooth solutions is established under the condition that the initial data are small perturbations of some given constant state. Moreover, we obtain the time decay rates of the higher-order spatial derivatives of the solution by combining the L p-L q estimates for the linearized equations and the Fourier splitting method, if the initial perturbation is small in H 3-norm and bounded in L 1-norm.
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