A highly loaded HP turbine rotor profile has been designed for increasing blade loading and reducing reaction without the penalty of increasing blade number and the cooling flow, the Zweifel coefficient is 1.2 at design point. Linear cascade testing is carried out to verification the aerodynamic performance, the test results matches the design very well for loading distribution, the energy loss coefficient is 0.014, and below 0.017 when the pressure ratio varies from 1.1 to 1.7, the effect of stagger angle to the energy loss coefficient is quite slightly, loss coefficient almost the same when the incidence angle increase from -10°to 20°, the difference of outlet flow angle are in 1 degree at different pressure ratio.
关键词
燃气轮机/透平叶型/载荷系数/平面叶栅试验
Key words
gas turbine/turbine blade/loading coefficient/linear cascade testing
维普
万方数据