Efficient Newton-multigrid solution techniques for higher order space–time Galerkin discretizations of incompressible flow
Efficient Newton-multigrid solution techniques for higher order space–time Galerkin discretizations of incompressible flow
复制标题
不可压缩流高阶时空伽辽金离散的高效牛顿多重网格求解技术
DOI:
10.1016/j.apnum.2014.04.011
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发表时间:
2014
影响因子:
2.8
通讯作者:
S. Turek
中科院分区:
文献类型:
--
作者:
S. Hussain;F. Schieweck;S. Turek
In this paper, we discuss solution techniques of Newton-multigrid type for the resulting nonlinear saddle-point block-systems if higher order continuous Galerkin–Petrov (cGP (k)) and discontinuous Galerkin (dG (k)) time discretizations are applied to the nonstationary incompressible Navier–Stokes equations. In particular for the cGP (2) method with quadratic ansatz functions in time, which lead to 3rd order accuracy in the L 2-norm and even to 4th order superconvergence in the endpoints of the time intervals, together with the finite element pair Q 2/P 1 disc for the spatial approximation of velocity and pressure leading to a globally 3rd order scheme, we explain the algorithmic details as well as implementation aspects. All presented solvers are analyzed with respect to their numerical costs for two prototypical flow configurations.
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DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
Hilmar Wobker;S. Turek
通讯作者:
S. Turek
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
M. Köster;S. Turek
通讯作者:
S. Turek
影响因子:
1.8
作者:
Damanik;Ouazzi
通讯作者:
Ouazzi
DOI:
10.2174/1876389801204010035
发表时间:
2012
期刊:
The Open Numerical Methods Journal
影响因子:
--
作者:
S. Hussain;F. Schieweck;S. Turek
通讯作者:
S. Turek
影响因子:
3
作者:
Hussain, S.;Schieweck, F.;Turek, S.
通讯作者:
Turek, S.