真空羽流场的DSMC并行数值模拟

DSMC PARALLEL NUMERICAL SIMULATION ON VACUUM PLUME

对ＤＳＭＣ方法进行小喷管真空羽流数值模拟的计算软件进行了并行化改造。计算表明在多处理器（节点）上实现并行计算能够大幅度地提高运算速度，缩短运行时间，增加计算规模，计算结果与串行计算一致。并对目前串行计算不能完成的真空羽流计算的算例成功地进行了ＤＳＭＣ并行计算，计算结果与理论分析一致。

The DSMC (Direct Simulation Monto-Carlo) computer code of a small nozzle vacuum plume was reformed.The computation showed that parallel computing could greatly accelerate computation,shorten computing time and enlarge computing scale.The parallel computation results accorded well with the sequential computation results.An example of DSMC parallel computation was also completed successfully for a vacuum plume and the computation results agreed well with theoretical analysis.The sequential computation won't be able to cope with this task.