Comparisons of the Maxwell and CLL gas/surface interaction models using DSMC

Details Comparisons of the Maxwell and CLL gas/surface interaction models using DSMC Comparisons of the Maxwell and CLL gas/surface interaction models using DSMC

Dec 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995stin...9616264h&link_type=abstract

Unknown

Mathematics

Aerobraking, Computerized Simulation, Gas Dynamics, Gas-Solid Interactions, Mathematical Models, Maxwell Fluids, Monte Carlo Method, Accommodation Coefficient, Aerodynamic Forces, Flow Distribution, Heat Transfer, Magellan Spacecraft (Nasa), Surface Reactions, Venus (Planet)

Scientific paper

The behavior of two different models of gas-surface interactions is studied using the Direct Simulation Monte Carlo (DSMC) method. The DSMC calculations examine differences in predictions of aerodynamic forces and heat transfer between the Maxwell and the Cercignani-Lampis-Lord (CLL) models for flat plate configurations at freestream conditions corresponding to a 140 km orbit around Venus. The size of the flat plate represents one of the solar panels on the Magellan spacecraft, and the freestream conditions correspond to those experienced during aerobraking maneuvers. Results are presented for both a single flat plate and a two-plate configuration as a function of angle of attack and gas-surface accommodation coefficients. The two-plate system is not representative of the Magellan geometry but is studied to explore possible experiments that might be used to differentiate between the two gas-surface interaction models. The Maxwell and CLL models produce qualitatively similar results for the aerodynamic forces and heat transfer on a single flat plate. However, the flow fields produced with the two models are qualitatively different for both the single-plate and two-plate calculations. These differences in the flowfield lead to predictions of the angle of attack for maximum heat transfer in a two plate configuration that are distinctly different for the two gas-surface interactions models.

Affiliated with

Also associated with

No associations

Rating

Comparisons of the Maxwell and CLL gas/surface interaction models using DSMC does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Comparisons of the Maxwell and CLL gas/surface interaction models using DSMC, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comparisons of the Maxwell and CLL gas/surface interaction models using DSMC will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1565167