1+1/2对转涡轮叶排轴向间距对性能影响的研究  

INVESTIGATION ABOUT EFFECTS OF AXIAL GAP ON THE PERFORMANCE OF VANELESS COUNTER-ROTATING TURBINE

作　　者：季路成[1] 项林[1] 黄海波[1] 徐建中[1] 

机构地区：[1]中国科学院工程热物理研究所,北京100080

出　　处：《工程热物理学报》2002年第5期565-568,共4页Journal of Engineering Thermophysics

基　　金：中国科学院知识创新工程项目;国家自然科学基金(No.59906012);国家重点基础研究发展规划项目(No.G1999022305)

摘　　要：木文对1+1/2对转涡轮中轴向间距影响进行了初步研究。对不同轴向间距叶栅流场进行了大量时间精确模拟。研究表明,1+1/2对转涡轮高低压转叶间轴向间距成为追求高效率的制约因素,轴向间距为高压转叶喉部宽度是关键点。因此有关小轴向间距下强激波/叶排干扰的研究应该加强。Preliminary researches on the axial gap effects in vaneless counter-rotating turbine are presented. Lots of time accurate simulations about cascade flow field with different axial gaps are made. It is remarked that axial gap become the pivotal factor, which affects the efficiency of the vaneless counter-rotating turbine. It is an important point when the axial gap equals to the throat width of HP rotor. Investigations about shock wave/blades interaction in circumstance of small axial gaps must be strengthened.

关 键 词：1+1/2对转涡轮 叶排轴向间距 无导叶对转涡轮 非定常流动 时间精确模拟 

分 类 号：O35[理学—流体力学] TK14[理学—力学]