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arXiv 2402.05792math.AP
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演化各向异性变系数Navier-Stokes方程的空间周期解:I. 存在性

Spatially-Periodic Solutions for Evolution Anisotropic Variable-Coefficient Navier-Stokes Equations: I. Existence

Sergey E. Mikhailov

AI总结:

研究各向异性变系数Navier-Stokes方程的空间周期解,利用Galerkin方法证明全局弱解存在。

摘要:

我们考虑n维非线性各向异性流体的Navier-Stokes方程的演化(非定常)空间周期解,其中黏度系数张量随空间和时间变化,并满足松弛椭圆条件。采用以周期Bessel位势算子的特征函数为基的Galerkin算法,我们证明了全局弱解的存在性。

英文摘要:

We consider evolution (non-stationary) space-periodic solutions to the $n$-dimensional non-linear Navier-Stokes equations of anisotropic fluids with the viscosity coefficient tensor variable in space and time and satisfying the relaxed ellipticity condition. Employing the Galerkin algorithm with the basis constituted by the eigenfunctions of the periodic Bessel-potential operator, we prove the existence of a global weak solution.

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