Information-flux method: a meshfree maximum-entropy Petrov-Galerkin method including stabilised finite element methods
Information-flux method: a meshfree maximum-entropy Petrov-Galerkin method including stabilised finite element methods
复制标题
信息通量方法:一种无网格最大熵 Petrov-Galerkin 方法,包括稳定有限元方法
DOI:
10.1016/j.cma.2012.05.015
复制
发表时间:
2012
影响因子:
7.2
通讯作者:
Wall W.A.
中科院分区:
文献类型:
--
作者:
Nissen K;Cyron C.J;Gravemeier V;Wall W.A.
An information-flux method incorporating a novel approach to stable methods is proposed. The method may be considered as a meshfree Petrov–Galerkin approximation scheme with basis functions based on the principle of maximum entropy. The two goals of accuracy and stability are distinctly assigned to solution and weighting functions, respectively. It is emphasised that stability can be ensured if the weighting functions are chosen such that they resemble the information flux of the underlying physical problem. In this study, the proposed method is applied to convection-dominated convection–diffusion problems. A seamless transition of the proposed method to stabilised finite element methods is demonstrated for increasing locality of the basis functions in one dimension; for lower localities, a superior convergence behaviour can be shown compared to stabilised finite elements. The method is presented and discussed for the general multi-dimensional case, with numerical results shown for one- and two-dimensional problems.
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DOI:
10.1046/j.1365-8711.1998.01707.x
发表时间:
1998
影响因子:
4.8
作者:
M. Hobson;A. Lasenby
通讯作者:
A. Lasenby
影响因子:
2.9
作者:
C. Cyron;M. Arroyo;Magdalena Ortiz
通讯作者:
C. Cyron;M. Arroyo;Magdalena Ortiz
影响因子:
7.2
作者:
V. Gravemeier;M. W. Gee;W. Wall
通讯作者:
W. Wall
影响因子:
4.8
作者:
J. Skilling
通讯作者:
J. Skilling
影响因子:
3.1
作者:
I. Kalashnikova;C. Farhat;R. Tezaur
通讯作者:
R. Tezaur