Two-dimensional direct simulation Monte Carlo (DSMC) was used to investigate the effect of wall accommodation on different modes of operation of a nozzle under high Knudsen number conditions. Substantial performance enhancement was seen at higher values of convergingdiverging angles, because a reduction in the surface area-to-volume ratio decreased the wall effects. Though the normal energy accommodation had a negligible influence on the nozzle performance, it was seen to be a critical factor for accurate prediction of gas temperature along the wall. At higher Knudsen numbers, the flow tended to become one-dimensional even for the case of complete accommodation.
CITATION STYLE
Watvisave, D. S., Bhandarkar, U. V., & Puranik, B. P. (2012). A DSMC-MD Investigation of Wall Effects in a Shock Tube Operating at High Knudsen Numbers. In 28th International Symposium on Shock Waves (pp. 199–204). Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-642-25688-2_30
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