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arXiv math/0702308math.AP
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具有退化粘性系数的球对称Navier-斯托克斯方程的整体性态

Global Behavior of Spherically Symmetric Navier-Stokes Equations with Degenerate Viscosity Coefficients

Mingjun Wei, Ting Zhang, Daoyuan Fang

摘要:

本文研究了具有引力和退化粘性系数的可压缩球对称Navier-斯托克斯方程的自由边界问题。在对初值作一定的假设下,我们得到了该方程的弱解的整体存在唯一性,并给出了解的一致上界(关于时间)。此外,我们还得到了解的$L^\infty$ -模和加权$H^1$ -模的稳定率估计.结果表明,该系统在小扰动下是稳定的,可以应用于天体物理中。

英文摘要:

In this paper, we study a free boundary problem for compressible spherically symmetric Navier-Stokes equations with a gravitational force and degenerate viscosity coefficients. Under certain assumptions that imposed on the initial data, we obtain the global existence and uniqueness of the weak solution and give some uniform bounds (with respect to time) of the solution. Moreover, we obtain some stabilization rate estimates in $L^\infty$-norm and weighted $H^1$-norm of the solution. The results show that such system is stable under the small perturbations, and could be applied to the astrophysics.

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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