Abstract: Two different wave discrete hole board are experimented, the model of heat transfer of discrete hole wave board film cooling is established, the effects on the film cooling effectiveness of the gas parameters of the flow and the geometric parameters of the discrete hole wave board are analyzed, and the transfer coeff icients are obtained. Some useful conclusion such as the cooling effectiveness of discrete hole wave board is low between the wave peak and the wave volley and the cooling effect iveness increase very quickly behind the wave board are obtained.

Key words: f ilm cooling, heat transfer, wall cooling, discrete hole wave board