Zero dissipation limit and stability of boundary layers for the heat conductive Boussinesq equations in a bounded domain

Zero dissipation limit and stability of boundary layers for the heat conductive Boussinesq equations in a bounded domain
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有界域导热 Boussinesq 方程的零耗散极限和边界层稳定性

DOI:
10.1017/s0308210513000875
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发表时间:
2015-06
期刊:
Proceedings of the Royal Society of Edinburgh. Section A. Mathematics
影响因子:
--
通讯作者:
Xie, Feng
Xie, Feng
中科院分区:
其他
文献类型:
--
作者:
Wang, Jing;Xie, Feng

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本文研究了具有粘性和导热系数的多维Boussinesq方程初边值问题的零耗散极限。这些方程被用作大气和海洋湍流中多维不可压缩流体运动的模型。特别地,它们描述了不可压缩流的热对流,并且构成了速度场、压力和局部温度之间的关系。在速度场为Navier滑移边界条件,温度场为热隔离边界条件下,证明了弱振幅特征边界层的存在性。然后,利用标准能量法证明了当粘性系数和导热系数均趋于0时,解的L2收敛性。
In this paper, we study the zero dissipation limit of the initial boundary-value problem of the multi-dimensional Boussinesq equations with viscosity and heat conductivity. Such equations are used as models for the motion of multi-dimensional incompressible fluids in atmospheric and oceanographic turbulence. In particular, they describe the thermal convection of an incompressible flow, and constitute the relations between the velocity field, the pressure and the local temperature. Under the Navier slip boundary condition in the velocity field and the thermal isolation boundary condition for the temperature, we prove the existence of weak amplitude characteristic boundary layers. Then, by a standard energy method, we prove the L 2 convergence of the solutions when both the viscosity and the heat conductivity coefficients tend to 0.
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