The heat transfer characteristics of the rotor-stator disk system were investigated experimentally.The distributions of temperature on the rotating disk surface

local and averaged Nusselt number of the rotating disk were obtained from the test.Conclusions are drawn as follows:The temperature gradient near disk center is insignificant;the Nusselt number at the inner radial position is almost invariable;and at outer radial position is increased with the increase of inlet mass flow coefficient.The averaged Nusselt number is dramatically increased with the increase of inlet mass flow coefficient.