On the asymptotic behavior of the one-dimensional motion of the polytropic ideal gas with degenerate heat conductivity

On the asymptotic behavior of the one-dimensional motion of the polytropic ideal gas with degenerate heat conductivity
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简并热导率多方理想气体一维运动的渐近行为

DOI:
10.1016/j.jde.2022.01.051
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发表时间:
2021-07
影响因子:
2.4
通讯作者:
Yi Peng
Yi Peng
中科院分区:
数学2区
文献类型:
--
作者:
Guocai Cai;Yanfang Peng;Yi Peng

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考虑一维可压缩常粘性Navier-Stokes方程组,非线性导热系数与温度的正次方成正比,且可能是退化的。这个问题是强加在无应力边界条件,它揭示了一个粘性导热的理想多方气体的绝热端部放入真空的运动。我们证明了在无应力边界条件下一维可压缩Navier-Stokes方程组的解与常导热系数情况下的解具有相同的大时间行为。
We consider the one-dimensional compressible Navier-Stokes system with constant viscosity and the nonlinear heat conductivity being proportional to a positive power of the temperature which may be degenerate. This problem is imposed on the stress-free boundary condition, which reveals the motion of a viscous heat-conducting perfect polytropic gas with adiabatic ends putting into a vacuum. We prove that the solution of one dimensional compressible Navier-Stokes system with the stress-free boundary condition shares the same large-time behavior as the case of constant heat conductivity.
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DOI: 10.1007/bf03167901
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