轴流式压气机部件气动匹配问题

COMPONENT MATCHING PROBLEM IN AXIAL-FLOW COMPRESSORS

轴流式压气机部件气动匹配问题章石波，王存诚，蔡可军（清华大学热能工程系北京１０００８４）关键词流场匹配，边界条件，频率量１部件气动匹配问题的本质及其工程意义流体机械部件气动匹配问题的提出，是因为当一个部件单独（或者说在清洁来流条件下）运行和在一定的系...

Component matching problem is significant in fluid-mechanical engineering, but has not been studied sufficiently. Its essence is demonstrated in this paper as the effects of disturbance caused by up and down-stream components on the flow field. Several cases are discussed in which component matching problem will occur in axial-flowt compressors.The problem can be settled through (1) properly determining boundary conditions with the effects of adjacent components taken into account, (2)studying the effect of boundary conditions on the behaviour of the concerned flow-field. Parameters including flow velocity (Mach number) and characteristic frequencies are mentioned which are relevant to positively dealing with the component matching problem.