The mixed finite element method with one unknown per element

被引：2
|
作者：
Younés, A
Mose, R
Ackerer, P
Chavent, G
机构：
[1] Univ Strasbourg 1, Inst Mecan Fluides, CNRS, UMR 7507, F-67000 Strasbourg, France
[2] Inst Natl Rech Informat & Automat, F-78153 Le Chesnay, France
来源：
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE I-MATHEMATIQUE | 1999年 / 328卷 / 07期
关键词：
D O I：
10.1016/S0764-4442(99)80258-4
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
To solve the groundwater flow equations, we show how to produce a scheme with one unknown per element starting from a mixed formulation discretized with the Raviart-Thomas triangular elements of lowest order. We study the new formulation in the elliptic case with sink/source terms in order to use mixed finite elements with less unknowns without any numerical integration The last part of the paper is aimed to study the positive definiteness of the matrix obtained with this new formulation. (C) Academie des Sciences/Elsevier, Paris.
引用
收藏
页码：623 / 626
页数：4
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