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arXiv 2201.08655math.AP
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可压缩聚合物流体微-宏模型的整体强解和大时间行为

Global strong solutions and large time behavior to a micro-macro model for compressible polymeric fluids near equilibrium

Wenjie Deng, Wei Luo, Zhaoyang Yin

摘要:

本文主要研究具有小初始数据的可压缩聚合物流体微宏模型的各阶空间导数的整体强解及其长时间衰减率。该模型是等熵可压缩Navier-斯托克斯方程与非线性Fokker-Planck方程的耦合。我们首先证明了微观-宏观模型存在唯一的全局强解,只要初始数据接近平衡态。此外,对于$d\geq3$,我们还提出了一个新的临界Fourier估计,使我们能够给出所有阶空间导数的$L^2$范数的长时间衰减率。

英文摘要:

In this paper, we mainly study the global strong solutions and its long time decay rates of all order spatial derivatives to a micro-macro model for compressible polymeric fluids with small initial data. This model is a coupling of isentropic compressible Navier-Stokes equations with a nonlinear Fokker-Planck equation. We first prove that the micro-macro model admits a unique global strong solution provided the initial data are close to equilibrium state for $d\geq2$. Moreover, for $d\geq3$, we also show a new critical Fourier estimation that allow us to give the long time decay rates of $L^2$ norm for all order spatial derivatives.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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