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http://dx.doi.org/10.5139/JKSAS.2003.31.2.001

Development of a 3-D Parallel DSMC Method for Rarefied Gas Flows Using Unstructured Meshes  

Kim, Min Gyu (한국과학기술원)
Gwon, O Jun (한국과학기술원)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.31, no.2, 2003 , pp. 1-9 More about this Journal
Abstract
In the present study, a 3-D Parallel DSMC method in developed on unstructured meshes for the efficient simulation of rarefied gas flows. Particle tracing between cells in achieved based on a linear shape function extended to three dimensions. For high parallel efficiency, successive domain decomposition is applied to achieve load balancing between processors by accounting for the number of particles. A particle weighting technique is also adopted to handle flows containing gases of significantly dirrerent number densities in the same flow domain. Application is made for flow past a 3-D delta wing and the result is compared with that from experiment and other calculation. Flow around a rocket payload at 100km altitude is also solved and the effect of plume back flow from the nozzle in studied.
Keywords
Rarefied Gas Flows; DSMC; Unstructured Meshes; Parallelization;
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