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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 method was used to carry out the parallelization of the calculation software for the numerical simulation of small nozzle vacuum plume. Computation shows that parallel computing on multi-processors (nodes) can greatly improve the computing speed, shorten the running time and increase the computing scale. The calculation results are in accordance with the serial computing. Finally, the DSMC parallel computing is successfully carried out for the calculation of the vacuum plume which can not be completed by serial computation. The calculation results are consistent with the theoretical analysis.