CAJ | 학술논문

针对某型风扇，本文设计了两种不同的轴向倾斜处理机匣结构ASSCT＿L100和ASSCT＿L50。利用三维数值模拟方法对两种不同轴向倾斜缝处理机匣结构与风扇转子通道之间的耦合流动进行了详细的数值模拟，研究了不同雷诺数对处理机匣结构扩稳效果的影响，揭示了不同雷诺数下机匣处理的扩稳机理。研究发现：雷诺数会影响处理机匣的扩稳效果，低雷诺数工作状况下，转子顶部通道叶片前缘压力面和叶片尾缘吸力面处均存在较大的低能流体，ASSCT＿L100处理机匣能够同时改善通道内叶片前缘和尾缘的流动状况，能够有效改善叶片顶部流场状况，从而提高风扇转子的稳定工作裕度。
침대모형풍선，본문설계료량충불동적축향경사처리궤갑결구ASSCT＿L100화ASSCT＿L50。이용삼유수치모의방법대량충불동축향경사봉처리궤갑결구여풍선전자통도지간적우합류동진행료상세적수치모의，연구료불동뢰낙수대처리궤갑결구확은효과적영향，게시료불동뢰낙수하궤갑처리적확은궤리。연구발현：뢰낙수회영향처리궤갑적확은효과，저뢰낙수공작상황하，전자정부통도협편전연압력면화협편미연흡력면처균존재교대적저능류체，ASSCT＿L100처리궤갑능구동시개선통도내협편전연화미연적류동상황，능구유효개선협편정부류장상황，종이제고풍선전자적은정공작유도。
To study the effects of Reynolds number on the casing treatment stability enhancement effect, a series of numerical simula-tions were performed for an axial compressor with two different axial skewed slots casing treatment ASSCT_L100 and ASSCT_L50, and the coupled flow of two different axial skewed slots casing treatment structure and compressor rotor channel were investigated in detail. Expanding the stability mechanism of machine casing treatment at different Reynolds numbers reveal.The simulation results indicate that low Reynolds number has an adverse effect on extending the stable operating range by casing treatment, there is a big low-energy fluid near the leading edge of pressure surface and the trailing edge of suction surface of rotor blade tip.ASSCT_L100 casing treatment can simultaneously improve the flow conditions of blade leading edge and trailing edge, therefore led to improving stability margin of the axial compressor rotor.