International Journal of Aeronautical and Space Sciences
- Volume 1 Issue 2
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- Pages.1-8
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- 2000
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- 2093-274X(pISSN)
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- 2093-2480(eISSN)
DSMC Analysis of Pressure Effect on Low-Density Nozzle Flow
- Chung, Chan-Hong (Department of Chemical Engineering Taegu University) ;
- Kim, Kyung-Hoe (Department of Chemical Engineering Taegu University)
- Published : 2000.11.01
Abstract
The flow in low-density plumes expanding into a region of finite pressure shows a quite different behavior from that observed in low-density plumes expanding into a vacuum. The flow structure in the plume varies depending on applied ambient and stagnation chamber conditions. In the present study, the direct simulation Monte-Carlo (DSMC) method based on molecular gas dynamics is employed in the analysis of low-density gas flows expanding through a small converging/diverging nozzle. Special attention has been paid to the effect of non-zero ambient and stagnation pressures on the flow structure which has rarely been studied using the DSMC method.