Finite Element Methods for Geometric Evolution Equations
Finite Element Methods for Geometric Evolution Equations
复制标题
几何演化方程的有限元方法
DOI:
10.1007/978-3-030-26980-7_55
复制
发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Gawlik, Evan S.
中科院分区:
文献类型:
--
作者:
Gawlik, Evan S.
We study finite element methods for the solution of evolution equations in Riemannian geometry. Our focus is on Ricci flow and Ricci-DeTurck flow in two dimensions, where one of the main challenges from a numerical standpoint is to discretize the scalar curvature of a time-dependent Riemannian metric with finite elements. We propose a method for doing this which leverages Regge finite elements – piecewise polynomial symmetric (0, 2)-tensors possessing continuous tangential-tangential components across element interfaces. In the lowest order setting, the finite element method we develop for two-dimensional Ricci flow is closely connected with a popular discretization of Ricci flow in which the scalar curvature is approximated with the so-called angle defect:minus the sum of the angles between edges emanating from a common vertex. We present some results from our ongoing work on the analysis of the method, and we conclude with numerical examples.
影响因子:
2.9
作者:
Gawlik, Evan S.
通讯作者:
Gawlik, Evan S.
影响因子:
2.1
作者:
S. Christiansen
通讯作者:
S. Christiansen
影响因子:
2.4
作者:
J. Cheeger;W. Müller;R. Schrader
通讯作者:
J. Cheeger;W. Müller;R. Schrader