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发动机氧泵至燃气发生器段的流场结构直接影响着发动机的工作性能,从理论上分析氧泵后是否需要设置整流栅以调整流场,对发动机总体设计十分必要。针对氧泵后流场的特点,借助CFD计算手段,对该段流场进行有整流栅和无整流栅两种情况的数值模拟,计算得到流阻、发生器入口处的总压均匀度、氧阀流量均匀度以及阀芯受力情况。结果表明:氧阀后设置整流栅是有必要的。
The structure of the flow field of the engine oxygen pump to the gas generator segment directly affects the performance of the engine. It is necessary to theoretically analyze whether the oxygen grid needs to be provided with a rectifier grid to adjust the flow field. According to the characteristics of the flow field after the oxygen pump, numerical simulation of the flow field in the section with the rectifier grid and the non-commutated grid is performed by means of CFD calculation, and the flow resistance, the total pressure uniformity at the inlet of the generator, Valve flow uniformity and spool force situation. The results show that it is necessary to set the rectifier grid after the oxygen valve.