DSMC simulation of ionized rarefied flowsRecently a renewed interest has been exhibited in understanding contamination and space environmental effect in the LEO range of 200 to 600 km as well as in low density microelectronics manufacturing technologies. Realistic simulations must model the physics of the highly coupled effects of neutral and charged particle flows, thermodynamic nonequilibrium, surface charging, and electromagnetic field effects. The computational requirements are enormous for this level of modeling and are almost impossible on current single processor supercomputers. An effort was initiated to develop this capability on a massively parallel MIMD supercomputers. The Wake Shield Facility experiment will be used for test case calculations. Preliminary results indicate that parallel supercomputers may be the only computers capable of simulating the required level of physics and spatial resolution. Calculations which contain from 1 to 8 million simulation particles are presented.
Document ID
19930064272
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bartel, Timothy J. (Sandia National Labs. Albuquerque, NM, United States)
Justiz, Charles R. (NASA Johnson Space Center Houston, TX, United States)