An evaluation of: Doubly Asymptotic Approximation; staggered solution schemes; USA-STAGS
Abstract
This report presents a comprehensive review and evaluation of the doubly asymptotic approximation and the staggered solution scheme implemented in the USA-STACS computer codes. The equations are derived and discussed in detail. Various solution strategies are examined. A stability analysis of the staggered scheme and a fully implicit integration scheme is done using the Lax-Richtmyer approach. Solutions to several problems are presented and comparisons made to closed form solutions. Detailed conclusions and recommendations are made, and appendices provide a list of errors and recommended improvements in both the USA and STACS codes.
- Publication:
-
Shock Vibration Information Center Shock Vibration Bulletin
- Pub Date:
- May 1981
- Bibcode:
- 1981SVICB.........D
- Keywords:
-
- Acoustics;
- Approximation;
- Asymptotic Methods;
- Computer Programs;
- Damping;
- Algorithms;
- Errors;
- Extrapolation;
- Shells (Structural Forms);
- Shock Waves;
- Structural Analysis;
- Fluid Mechanics and Heat Transfer