Abstract
Numerical analysis and experiments on convective heat transfer from a rotating disk with fins, which are arranged along radial direction, are performed and the results are compared to realize the designing of the ECB retarder using not only experiment but also analysis. The results show that the heat transfer coefficients and the flow patterns obtained by the analysis and the experiments agree each other considerably. On the other hand, there are some differences between the results of analysis and those of experiments, for example, the tendency of the radial distribution of heat transfer coefficients. The investigation of the cause of different results on the velocity vectors around the inner edge of the fin under some conditions is necessary to diminish the discrepancy of the results between the numerical analysis and the experiments.
