A Method for Estimating the Computational Requirements of DSMC Simulations

✍ Scribed by Marc A Rieffel

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 403 KB
• Volume: 149
• Category: Article
• ISSN: 0021-9991
• DOI: 10.1006/jcph.1998.6140

✦ Synopsis

This paper presents a model for predicting the runtime and storage requirements for direct simulation Monte Carlo (DSMC) simulations of rarefied gas flow. A variety of flow configurations are considered, including internal, external, steady, and unsteady. The analysis is independent of the simulation architecture, gridding technique, collision model, and implementation technique. The model is validated and constants of the model determined for simple test cases. The model is then used to predict the requirements of a realistic three-dimensional simulation, and the results are shown to agree with experiments. Additional predictions define the boundaries of simulations that are feasible with existing computational resources.