Abstract
This work describes transient heat transfer characteristics from a horizontal heated cylinder at a uniform temperature, placed in a cylindrical container filled with cold water. The scaling analysis has demonstrated three different heat transfer regimes as the heat process advances with time. The times that differentiate the three regimes have been identified and derived as a function of the Rayleigh number and the geometric aspect ratio between the inner cylinder and the cylindrical container diameters. The numerical experiment has been performed in order to prove the correctness of the scaling analysis. It is shown that the results derived by the scaling analysis agree well with those from the numerical experiments.
