Particle Simulation of Hypersonic Flow
Abstract
A particle code for simulating a rarefied hypersonic flow is developed which accounts for a multiple species gas in thermochemical nonequilibrium and which takes advantage of the parallel architecture of the Intel iPSC/860 supercomputer. Various tests were conducted using a generic blunt body consisting of a hemispherically blunted 60-degree half-angle cone at angle of attack. The different tests conducted show that the performance of the parallel code using 512 nodes exceeds by an order of magnitude the performance obtained for a highly vectorized code run on a single processor of the Cray YMP, that scaleup is found to be nearly linear with the number of processors used, that run time can be greatly reduced by employing a large number of particles, and that runs with 67.5 million particles can be carried out when employing the large memory of the Intel iPSC/860. Other results relate to different applications of the code for studying the near-continuum state of a gas near a cold solid boundary.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 26, 1993
- Accession Number
- ADA267185
Entities
People
- Donald Baganoff
Organizations
- Stanford University