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arXiv 2005.08825math.AP
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随机Navier-Stokes-Poisson方程组的组合不可压拟中性极限

The combined incompressible quasineutral limit of the stochastic Navier-Stokes-Poisson system

Donatella Donatelli, Prince Romeo Mensah

摘要:

本文研究了在全空间中受随机强迫项扰动的可压缩Navier-Stokes-Poisson方程组弱鞅解的组合不可压拟中性极限。在不完备初值条件下,证明了一类随机不可压Navier-Stokes方程组的弱鞅解的收敛律。结果适用于任何具有适当增长的非线性强迫项。的证明是基于声波的分析,但由于我们正在处理一个随机的偏微分方程,现有的确定性工具来处理这个二阶方程故障。虽然这似乎是一个小的修改,处理随机可压缩Navier-Stokes系统中的声波,我们产生适当的色散估计的一阶方程组,这是一个附加值的现有理论。作为这种色散估计分析的副产品,我们也能够证明在零电子质量限制的情况下的随机流体动力学等离子体模型的收敛结果。

英文摘要:

This paper deals with the combined incompressible quasineutral limit of the weak martingale solution of the compressible Navier-Stokes-Poisson system perturbed by a stochastic forcing term in the whole space. In the framework of ill-prepared initial data, we show the convergence in law to a weak martingale solution of a stochastic incompressible Navier-Stokes system. The result holds true for any arbitrary nonlinear forcing term with suitable growth. The proof is based on the analysis of acoustic waves but since we are dealing with a stochastic partial differential equation, the existing deterministic tools for treating this second-order equation breakdown. Although this might seem as a minor modification, to handle the acoustic waves in the stochastic compressible Navier-Stokes system, we produce suitable dispersive estimate for first-order system of equations, which are an added value to the existing theory. As a by-product of this dispersive estimate analysis, we are also able to prove a convergence result in the case of the zero-electron-mass limit for a stochastic fluid dynamical plasma model.

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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