Numerical comparisons of time-space iterative method and spatial iterative methods for the stationary Navier-Stokes equations

Numerical comparisons of time-space iterative method and spatial iterative methods for the stationary Navier-Stokes equations
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平稳纳维-斯托克斯方程时空迭代法与空间迭代法的数值比较

DOI:
10.1016/j.jcp.2012.06.007
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发表时间:
2012-08
影响因子:
4.1
通讯作者:
Li, Jian
Li, Jian
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
He, Yinnian;Li, Jian

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本文对求解平稳Navier-Stokes方程的时空迭代法和空间迭代法进行了数值比较。时空迭代法是在弱唯一性条件下,利用欧拉隐式/显式格式求解基于时空离散化的非平稳Stokes方程。空间迭代法是在强唯一性假设下,求解基于空间离散化的平稳Stokes格式、Newton格式和Oseen格式。比较了时空迭代法和空间迭代法的稳定性和收敛性条件。此外,数值试验表明,时空迭代法比空间迭代法求解平稳Navier-Stokes问题更简单。时空迭代法可以求解黏度较小的平稳Navier-Stokes方程,而空间迭代法只能求解黏度较大的平稳Navier-Stokes方程。
This paper makes some numerical comparisons of time–space iterative method and spatial iterative methods for solving the stationary Navier–Stokes equations. The time–space iterative method consists in solving the nonstationary Stokes equations based on the time–space discretization by the Euler implicit/explicit scheme under a weak uniqueness condition (A2). The spatial iterative methods consist in solving the stationary Stokes scheme, Newton scheme, Oseen scheme based on the spatial discretization under some strong uniqueness assumptions. We compare the stability and convergence conditions of the time–space iterative method and the spatial iterative methods. Moreover, the numerical tests show that the time–space iterative method is the more simple than the spatial iterative methods for solving the stationary Navier–Stokes problem. Furthermore, the time–space iterative method can solve the stationary Navier–Stokes equations with some small viscosity and the spatial iterative methods can only solve the stationary Navier–Stokes equations with some large viscosities.
DOI: 10.1090/chel/343
发表时间: 1977-02
期刊: --
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