A hybridized weak Galerkin finite element scheme for the Stokes equations
A hybridized weak Galerkin finite element scheme for the Stokes equations
复制标题
Stokes方程的混合弱伽辽金有限元格式
DOI:
10.1007/s11425-015-5030-4
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发表时间:
2015-04
影响因子:
1.4
通讯作者:
Wang XiaoShen
中科院分区:
文献类型:
--
作者:
Zhai QiLong;Zhang Ran;Wang XiaoShen
In this paper a hybridized weak Galerkin (HWG) finite element method for solving the Stokes equations in the primary velocity-pressure formulation is introduced. The WG method uses weak functions and their weak derivatives which are defined as distributions. Weak functions and weak derivatives can be approximated by piecewise polynomials with various degrees. Different combination of polynomial spaces leads to different WG finite element methods, which makes WG methods highly flexible and efficient in practical computation. A Lagrange multiplier is introduced to provide a numerical approximation for certain derivatives of the exact solution. With this new feature, HWG method can be used to deal with jumps of the functions and their flux easily. Optimal order error estimate are established for the corresponding HWG finite element approximations for both primal variables and the Lagrange multiplier. A Schur complement formulation of the HWG method is derived for implementation purpose. The validity of the theoretical results is demonstrated in numerical tests.
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影响因子:
2.1
作者:
Lin Mu;Junping Wang;Yanqi Wang;X. Ye
通讯作者:
Lin Mu;Junping Wang;Yanqi Wang;X. Ye
DOI:
--
发表时间:
--
期刊:
--
影响因子:
--
作者:
D. Arnold;F. Brezzi
通讯作者:
D. Arnold;F. Brezzi
影响因子:
2.1
作者:
BABUSKA, I
通讯作者:
BABUSKA, I
DOI:
10.1090/s0025-5718-2014-02852-4
发表时间:
2012-02
期刊:
Math. Comput.
影响因子:
--
作者:
Junping Wang;X. Ye
通讯作者:
Junping Wang;X. Ye
影响因子:
1.7
作者:
Junping Wang;X. Ye
通讯作者:
Junping Wang;X. Ye