Experimental research of an axial flow compressor performance with stepped tip gap casing configuration 梯狀尖部間隙機(jī)匣處理對軸流壓氣機(jī)性能影響的實(shí)驗(yàn)研究
Only axisymmetric layout of tip gap can improve mass flow range , namely , all asymmetric casing configurations can not improve compressor performance and stability 由實(shí)驗(yàn)分析得知,只有在轉(zhuǎn)子尖部間隙為軸對稱時(shí),才有可能改善轉(zhuǎn)子的性能;非軸對稱形式,即尖部間隙周向的變化,只能惡化轉(zhuǎn)子的性能。
Twelve casing configurations were investigated , consisting of three step profiles at each of three clearance levels ( including seven casing geometric size ) to find the effects of radial / axial variation of tip gap on rotor performance , and five casing configurations including two types of asymmetric profiles were applied in the research of circumferential variation of tip clearance 文中設(shè)計(jì)了十二種機(jī)匣結(jié)構(gòu)用于與實(shí)壁機(jī)匣相比較,包括軸向布局的七種階梯狀結(jié)構(gòu)及五種周向變化的不對稱結(jié)構(gòu)形式(偏心周向變化和橢形周向變化) 。