涡轮叶片内部回转通道的换热实验

用实验的方法研究了发动机涡轮叶片内部带肋回转通道壁面的换热特性.用瞬态液晶测量方法测量了整个叶片内部三个通道的全表面换热分布.研究了不同的气流雷诺数情况下和三个出口不同的出流比情况下对换热的影响.结果表明：在相同的出流比情况下,通道的平均努塞尔数随着入口雷诺数的增加而增大;在实验范围内,当进口雷诺数一定的情况下,三个出...

Heat transfer measurements of turn-over channel in turbine blade

An experiment was performed on a facility with ribbed turn-over channel built based on the inner structure of the real turbine blade.A transient liquid crystal was used to measure the heat transfer coefficients of three channels in turbine blade.The influences of Reynolds number and different outlet discharge ratios on the heat transfer of the ribbed walls were studied on the premise that the channel area changes continually.The experiment results show that:the average Nusselt number for the channel increas...