ILUBCG2: A preconditioned biconjugate gradient routine for the solution of linear asymmetric matrix equations arising from 9-point discretizations

Title of program: ILUBCG2 Catalogue Id: AALX_v1_0 Nature of problem Certain elliptic and parabolic partial differential equations that arise in plasma physics and other applications are solved in two dimensions. The implicit solution techniques used for these equations give rise to a system of linear equations whose matrix operator is sparse - often 9-banded - and generally asymmetric. We provide a fast algorithm for their solution. ADAPTATION SUMMARY: Vol:Year:Page 55:1989:359 "0001ILUBCG2-11" "ILUBCG2-11: solution of 11-banded nonsymmetric linear equati ... Note: adaptation instructions are contained in source code Versions of this program held in the CPC repository in Mendeley Data AALX_v1_0; ILUBCG2; 10.1016/0010-4655(87)90213-X This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)程序名称：ILUBCG2 目录编号：AALX_v1_0 问题本质：针对等离子体物理及其他应用场景中出现的二维椭圆型与抛物型偏微分方程，本程序实现其数值求解。针对这类方程所采用的隐式求解方法，会生成线性方程组，其矩阵算子为稀疏矩阵——通常具有9条带结构，且整体非对称。我们为该类方程组的求解提供了一种高效算法。 改编摘要： 卷:年份:页码 55:1989:359 "0001ILUBCG2-11" "ILUBCG2-11：求解11条带结构的非对称线性方程组……" 备注：改编说明包含于源代码中。 Mendeley数据平台的CPC知识库中收录的本程序版本：AALX_v1_0；ILUBCG2；DOI:10.1016/0010-4655(87)90213-X 本程序源自贝尔法斯特女王大学馆藏的CPC程序库（1969-2018）