Numerical thermal analysis of water's boiling heat transfer based on a turbulent jet impingement on heated surface

In this study, a numerical method for simulation of flow boiling through subcooled jet on a hot surface with 800 degrees C has been presented. Volume fraction (VOF) has been used to simulate boiling heat transfer and investigation of the quench phenomena through fluid jet on a hot horizontal surface. Simulation has been done in a fixed T-sub = 55 degrees C, Re = 5000 to Re = 50,000 and also in different T-sub = T-sat - T-f between 10 degrees C and 95 degrees C. The effect of fluid jet velocity and subcooled temperature on the rewetting temperature, wet zone propagation, cooling rate and maximum heat flux has been investigated. The results of this study show that by increasing the velocity of fluid jet of water, convective heat transfer coefficient at stagnation point increases. More ever, by decreasing the temperature of the fluid jet, convective heat transfer coefficient increases. (C) 2016 Elsevier B.V. All rights reserved.