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arXiv 1702.07896math.AP
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粘性系数随温度变化的可压缩导热流体的对称流动

Symmetric flows for compressible heat-conducting fluids with temperature dependent viscosity coefficients

Ling Wan, Tao Wang

摘要:

本文研究了有界环形区域内可压缩导热理想多方气体的Navier-斯托克斯方程,其中粘性系数和导热系数是温度的一般光滑函数。一个全球的时间,球或圆柱对称,经典解的初始边值问题的存在唯一的和指数收敛到常数状态的时间趋于无穷的初始数据和绝热指数$γ$在一定的假设下。如果$γ$足够接近1,则初始数据可能很大。这些结果是Nishida-Smoller型的,并推广了[Liu et al.,SIAM J. Math. Anal. 46(2014),2185- 2228]限于一维流。

英文摘要:

We consider the Navier--Stokes equations for compressible heat-conducting ideal polytropic gases in a bounded annular domain when the viscosity and thermal conductivity coefficients are general smooth functions of temperature. A global-in-time, spherically or cylindrically symmetric, classical solution to the initial boundary value problem is shown to exist uniquely and converge exponentially to the constant state as the time tends to infinity under certain assumptions on the initial data and the adiabatic exponent $γ$. The initial data can be large if $γ$ is sufficiently close to 1. These results are of Nishida--Smoller type and extend the work [Liu et al., SIAM J. Math. Anal. 46 (2014), 2185--2228] restricted to the one-dimensional flows.

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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