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首页> 外文期刊>Journal of Computational Physics >NONLOCAL ARTIFICIAL BOUNDARY CONDITIONS FOR THE INCOMPRESSIBLE VISCOUS FLOW IN A CHANNEL USING SPECTRAL TECHNIQUES
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NONLOCAL ARTIFICIAL BOUNDARY CONDITIONS FOR THE INCOMPRESSIBLE VISCOUS FLOW IN A CHANNEL USING SPECTRAL TECHNIQUES

机译:使用谱技术的通道中不可压缩粘性流的非局部人工边界条件

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摘要

In this paper the numerical simulation of the steady incompressible viscous flow in a no-slip channel is considered. A sequence of approximate nonlocal artificial boundary conditions on a given segment artificial boundary is derived by a system of linearized Navier-Stokes equations and spectral techniques. Then the original problem is reduced to a boundary value problem in a bounded computational domain. The numerical examples show that these artificial boundary conditions are very effective and are also more accurate than Dirichlet and Neumann boundary conditions, which are often used in the engineering literature. (C) 1996 Academic Press, Inc. [References: 15]
机译:本文考虑了无滑道中不可压缩粘性流的数值模拟。通过线性化的Navier-Stokes方程和光谱技术系统,可以得出给定分段人工边界上的一系列近似非局部人工边界条件。然后将原始问题简化为有界计算域中的边值问题。数值算例表明,这些人工边界条件非常有效,并且比工程文献中经常使用的Dirichlet和Neumann边界条件更精确。 (C)1996 Academic Press,Inc. [参考:15]

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