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为探讨非设计点的气动性能,以某3级高负荷低反力度吸附式压气机首级超声速级作为研究对象,借助数值模拟的方法,分别研究了变转速、变抽吸量以及近失速点首级超声速级参数以及内部流场的变化.结果表明:变转速条件下,基于低反力度设计概念研制的吸附式压气机所采用的抽吸方案仍能适应设计要求;减少抽吸量,在降低本级气动性能的同时,增加了其与下一级流动匹配的难度;通过在端壁抽吸槽道前段添加附加抽吸槽道/孔可进一步拓宽吸附式压气机的工作范围.
In order to investigate the aerodynamic performance of non-design point, the first stage supersonic velocity level of a three-stage high-load and low-reactivity adsorption compressor was taken as the research object. By means of numerical simulation, the effects of variable speed, variable suction and near stall point The first stage supersonic speed parameters and the change of internal flow field.The results show that the suction scheme adopted by the suction compressor developed based on the design concept of low reverse force can still meet the design requirements under variable speed conditions, Reducing the aerodynamic performance of this stage increases the difficulty of matching with the next stage flow; the working range of the adsorptive compressor can be further broadened by adding additional suction channels / holes in front of the end wall suction channels.