A simple pressure stabilization method for the Stokes equation

A simple pressure stabilization method for the Stokes equation
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DOI:
10.1002/cnm.1041
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发表时间:
2007-08
影响因子:
--
通讯作者:
R. Becker;P. Hansbo
R. Becker;P. Hansbo
中科院分区:
--
文献类型:
--
作者:
R. Becker;P. Hansbo

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在本文中,我们考虑了一种稳定Stokes问题的方法,它使用压力和速度的等阶插值,避免了在稳定项中使用网格尺寸参数。我们证明了在三角形上的分段线性和分段二次多项式的情况下,我们的方法对于等阶插值是稳定的。在线性多项式的情况下,我们恢复了一个众所周知的想法,即使用质量集中作为一种稳定机制。
In this paper, we consider a stabilization method for the Stokes problem, using equal-order interpolation of the pressure and velocity, which avoids the use of the mesh size parameter in the stabilization term. We show that our approach is stable for equal-order interpolation in the case of piecewise linear and piecewise quadratic polynomials on triangles. In the case of linear polynomials, we retrieve a well-known idea of using mass lumping as a stabilization mechanism.