Determination of Heat Transfer Coefficients for a Jet Impingement Cooling Scenario Using Inverse Heat Transfer

Abstract

AbstractThe material properties of steel strongly depend upon the heat transfer/cooling rate during the hot rolling process. Ascertaining the heat transfer coefficient for impingement cooling scenario is one of the challenging tasks. The inverse heat transfer method is often employed to find the heat transfer coefficient from the measured temperature data. In the present study, a full-scale detailed computational fluid dynamics (CFD) simulation has been performed to simulate jet impingement cooling of a circular disk. From the temperature data of the circular disk, a three-dimensional mathematical model is developed to solve the inverse heat transfer problem using simulated annealing method for computing the heat transfer coefficient distribution. The temperature provided by the inverse heat transfer method is compared with the CFD simulation data. The temperature data from the inverse heat transfer model closely match with the full-scale CFD simulation data having 99% accuracy and with 88% reduction in computational cost.KeywordsJet impingement coolingInverse heat transferSimulated annealingHeat transfer coefficient