Variational discretization of wave equations on evolving surfaces
Variational discretization of wave equations on evolving surfaces
复制标题
演化表面上波动方程的变分离散化
DOI:
10.1090/s0025-5718-2014-02882-2
复制
发表时间:
2014
期刊:
影响因子:
--
通讯作者:
Dhia Mansour
中科院分区:
文献类型:
--
作者:
C. Lubich;Dhia Mansour
. A linear wave equation on a moving surface is derived from Hamil-ton’s principle of stationary action. The variational principle is discretized with functions that are piecewise linear in space and time. This yields a discretization of the wave equation in space by evolving surface finite elements and in time by a variational integrator, a version of the leapfrog or St¨ormer–Verlet method. We study stability and convergence of the full discretization in the natural time-dependent norms under the same CFL condition that is required for a fixed surface. Using a novel modified Ritz projection for evolving surfaces, we prove optimal-order error bounds. Numerical experiments illustrate the behavior of the fully discrete method.
影响因子:
2.1
作者:
Dziuk, G.;Lubich, Ch.;Mansour, D.
通讯作者:
Mansour, D.
影响因子:
14.2
作者:
Dziuk, Gerhard;Elliott, Charles M.
通讯作者:
Elliott, Charles M.
影响因子:
1
作者:
Kröner;Müller
通讯作者:
Müller