arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2103.00705math.NAcs.NA
收藏

不可压缩流动的低次严格守恒有限元法

A low-degree strictly conservative finite element method for incompressible flows

Huilan Zeng, Chen-Song Zhang, Shuo Zhang

摘要:

本文针对不可压缩流体提出了一种新的$P_{2}-P_{1}$有限元对。对于这对,离散inf-sup条件和离散Korn不等式在一般三角剖分上成立。当应用于不可压缩流的模型时,它产生精确的无发散速度近似。对不可压缩流的鲁棒能力进行了理论和数值验证。

英文摘要:

In this paper, a new $P_{2}-P_{1}$ finite element pair is proposed for incompressible fluid. For this pair, the discrete inf-sup condition and the discrete Korn's inequality hold on general triangulations. It yields exactly divergence-free velocity approximations when applied to models of incompressible flows. The robust capacity of the pair for incompressible flows are verified theoretically and numerically.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑