Computational fluid dynamics is used to simulate recent nonequilibrium plasma experiments performed at Stanford University. In these experiments, hightemperature nitrogen and air plasmas are generated and then forced to cool under controlled conditions in a test-section. Measurements of temperature and electron concentration are made. The computational model includes a 10-species, 14-reaction finite-rate chemical kinetics model for the nitrogen plasma and an 11-species, 19-reaction finite-rate model for the air plasma. It uses a finite rate vibration-electronic energy relaxation model. The influence of the plasma temperature profile and swirl is studied. The simulations do not agree with the experiments; the centerline plasma cooling rate is under-predicted, resulting in the electron concentration remaining too large. Possible reasons for this difference are discussed.
|Original language||English (US)|
|State||Published - 1998|
|Event||29th Plasmadynamics and Lasers Conference, AIAA 1998 - Albuquerque, United States|
Duration: Jun 15 1998 → Jun 18 1998
|Other||29th Plasmadynamics and Lasers Conference, AIAA 1998|
|Period||6/15/98 → 6/18/98|
Bibliographical notePublisher Copyright:
© 1998 by Graham V. Candler. Published by the American Institute of Aeronautics and Astronautics, Inc.