In this paper, we proposed various types of synchronous and asynchronous twostage multisplitting iterative methods for the parallel solution of linear algebraic systems. Convergence theories were given and relaxed for...
详细信息
In this paper, we proposed various types of synchronous and asynchronous twostage multisplitting iterative methods for the parallel solution of linear algebraic systems. Convergence theories were given and relaxed forms of these methodswere investigated when the coefficient matrix is either monotone or an *** experiments on CHALLENGE-L were presented.
This paper describes a vector algorithm for some branched functions-indirect address algorithm, and the results of numerical experiments on C3201 computer and YH-2 computer are also given.
This paper describes a vector algorithm for some branched functions-indirect address algorithm, and the results of numerical experiments on C3201 computer and YH-2 computer are also given.
In this paper some common used numerical schemes for solving discrete ordinate equations are considered and the error estimates are studied for the combined spatial and angular approximations. The conclusions show tha...
详细信息
In this paper some common used numerical schemes for solving discrete ordinate equations are considered and the error estimates are studied for the combined spatial and angular approximations. The conclusions show that the error order of scalar flux in all of these schemes can not be second order even if the source term f is smooth enough. In addition, when we introduce a kind of graded grids, the simple step character scheme has same accuracy as "high order" ones.
The algebraic expressions describing the geometric properties of mesh curves aregiven. The control functions concering above properties are introduced and functionalsshowing those properties are constructed. Based on ...
详细信息
The algebraic expressions describing the geometric properties of mesh curves aregiven. The control functions concering above properties are introduced and functionalsshowing those properties are constructed. Based on a theorem, we get the concretecorresponding relation of the control functions with the mesh properties when thefuctional taken minimum. By the numerical solution of Euler equation obtained fromfunctional minimum, we get the needed grids. This method of grids generation has aquit derict geometric meaning, and its inner control is flexible. Particularly not onlythe adaptability with physical preoblem is concerned, but also the adaptability with thereal physical region. The numerical experiments verified the efficiency of our method.
暂无评论