Effect of different porosity on thermally driven heat transfer in a centrifugal force field

Based on the background of the turbine blade super-cooling technology,porous medium was installed in a new kind of cooling configuration with cooling tunnels. Experiments and numerical simulations were carried out to investigate the thermally driven heat transfer rules in the new kind of cooling configuration with different porosity in a centrifugal force field.The results of experiments are basically consistent with that of the numerical simnlalions.Study shows that the heat transfer processes of the new cooling configuration are identical under different porosity.The thermally driven heat transfer of the cooling configuration filled with porous medium can be enhanced by increasing rotating speed,heat flux and cooling air speed.At the same time,the heat transfer effect is weakened with the increase of the porosity.