用实验方法研究了涡轮叶片内带肋U形通道在旋转状态下的前缘、后缘及两侧面局部换热系数分布。结果表明,在旋转状态下此通道的努塞尔数随雷诺数的增大而增大。在进气直通道的后缘和出气直通道的前缘,努塞尔数随旋转数的增加而增加;在进气直通道的前缘和出气直通道的后缘,努塞尔数随着旋转数的变化出现几次反复。随着浮力数的增加,通道的平均努塞尔数是下降的。U形通道在旋转状态下的流动换热规律比静态下的复杂的多 The distribution of local heat transfer coefficient of the leading edge, trailing edge and both sides of the ribbed U-shaped channel in the turbine blade under rotating condition was studied by means of experimental method. The results show that the Nusselt number of this channel increases with the Reynolds number in the rotating state. The Nusselt number increases with the number of revolutions at the trailing edge of the straight inlet passage and at the leading edge of the outlet straight passage; Several changes in the number of rotation appears repeatedly. As the buoyancy increases, the average Nusselt number of the channel decreases. U-shaped channel in the rotating state of the flow heat transfer law than under static more