Accession Number:

ADA083545

Title:

CHEMEQ - A Subroutine for Solving Stiff Ordinary Differential Equations

Descriptive Note:

Interim rept.

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

Report Date:

1980-02-26

Pagination or Media Count:

51.0

Abstract:

A FORTRAN subroutine CHEMEQ which employs the Selected Asymptotic Integration Method SAIM for solving the stiff ordinary differential equations associated with reactive flow problems is described and documented. The SAIM algorithm identifies the stiff equations for treatment with a stiffly stable method. The remaining equations are treated with a standard classical method. The algorithm is a very low-overhead method which is particularly efficient when coupled with fluid dynamic calculations. It also gives significant reductions in computational costs for model development.

Subject Categories:

  • Theoretical Mathematics
  • Computer Programming and Software

Distribution Statement:

APPROVED FOR PUBLIC RELEASE