Accession Number : ADA324085

Title :   Using Diagonally Implicit Multistage Integration Methods for Solving Ordinary Differential Equations. Part 1: Introduction and Explicit Methods.

Descriptive Note : Interim rept. Oct 94-Sep 96,

Corporate Author : NAVAL AIR WARFARE CENTER WEAPONS DIV CHINA LAKE CA

Personal Author(s) : VanWieren, Jack

PDF Url : ADA324085

Report Date : JAN 1997

Pagination or Media Count : 140

Abstract : A survey of theoretical results for the recently invented and highly promising class of diagonally implicit multistage integration methods (DIMSIMs) is provided. New results are obtained that provide improved implementation and simplified analysis. Particular attention is given to issues affecting use on parallel computers in waveform relaxation. The process of implementation parameter derivation and testing for the second and fifth order members of the DIMEX family of ordinary differential equation solver computer codes using explicit DIMSIMs is described. Extensive test results using the standard suite DETEST are reported that show considerable promise. A listing of the FORTRAN 77 research code DIMEX5 is provided.

Descriptors :   *PARALLEL PROCESSING, *MATHEMATICAL PROGRAMMING, *NUMERICAL INTEGRATION, *PARTIAL DIFFERENTIAL EQUATIONS, ALGORITHMS, SOFTWARE ENGINEERING, MATRICES(MATHEMATICS), FORTRAN, BOUNDARY VALUE PROBLEMS.

Subject Categories : Numerical Mathematics
      Operations Research

Distribution Statement : APPROVED FOR PUBLIC RELEASE