EXPERIMENTAL RESEARCH ON TRANSIENT HEAT TRANSFER IN SAND

In order to examine if the heat conduction in porous material behaveslike a wave as claimed by other researchers, experiments on transient heat transferis conducted in casting sand. The results show that the heat propagation can bedescribed neither by wave nor by diffusion model. The CV-wave concept is discussedand challenged according to the experimental results in the entire transient stage,including the transient response of temperature and the response curve of penetration-depth versus penetration-time.