衛(wèi)星發(fā)動機(jī)羽流污染模型的DSMC方法研究

The DSMC method for plume contamination modeling of satellite

摘要: 文章通過DSMC（Direct Simulation Monte Carlo，直接模擬蒙特卡羅）方法對衛(wèi)星發(fā)動機(jī)羽流進(jìn)行數(shù)值模擬，對仿真方法進(jìn)行了對比驗證，證實了DSMC方法可以比較精確地模擬羽流場。在建立衛(wèi)星污染模型的過程中，針對污染發(fā)動機(jī)噴口形狀的變化以及出口參數(shù)的變化，對DSMC方法模擬結(jié)果進(jìn)行了對比，得到噴口形狀和出口參數(shù)的變化對模擬結(jié)果的影響，并得到最優(yōu)的衛(wèi)星敏感表面羽流污染計算模型。

Abstract: To study satellite thrusters for attitude control and orbit control, the DSMC method is used for plume contamination modeling on satellite sensitive surfaces, in simulating nitrogen plume flow, and the results are compared with those of existing experiments. The reliability of DSMC method for the plume simulation is verified. Then, the results of the DSMC simulation are compared for different model parameters of plume contamination, which may offer references for studying plume back flow contamination on the sensitive

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