主要研究一类电报方程的H^1-Galerkin非协调混合有限元方法,在任意四边形网格剖分下,其逼近空间分别取为类Wilson元与双线性Q1元,在不需要满足LBB相容性条件及不采用传统的Ritz投影的情况下,得到了与常规有限元方法相同的L^2-模和H^1-模的误差估计,进一步拓展了H^1-Galerkin混合有限元和类Wilson元的应用范围.
In this paper, an H^1-Galerkin nonconforming mixed finite element method telegraph equations is studied on arbitrary quadrilateral meshes, the approximating spaces are selected as Quasi-Wilson element and bilinear Q1 element, respectively. Without requiring tbe LBB consistency condition and traditiona/ Ritz projection, the same error estimates of L^2-norm and H^1-norm as those of the tconventional finite element methods are obtained. Thus the applications of H^1-Galerkin mixed finite element method and Quasi-Wilson element are extended.