Abstract
An experimental study has been carried out to understand relationship between change in surface temperature and heat flux and flow condition, especially, the position of the wetting during quenching high temperature cylindrical block with an impinging jet. The surface temperature and heat flux during quenching can be estimated from the measured temperatures in the block using two-dimensional inverse solution. It reveals how surface temperature changes with the movement of the wetting point. A specific position at which the maximum heat transfer coefficient and the maximum heat flux occur is compared with the wetting point, resulting in these locations appear far away from the wetting point. The time duration from the start of the impingement to the time after which the wetting starts expanding on the surface is predicted by the proposed correlation.
