Simulation of boiling transition under quench process by gas-liquid interface model

Abstract

Boiling in quenching process is an important and significant phenomenon, due to the variations of cooling rate and finally the deformation of the product, which has been paid much attention in the past few decades. However, it is still difficult to conduct accurate measurements, because of the small spatial scales and rapid time constants. Authors proposed phase-field approach applied for non-equilibrium gas-liquid interface and derive a mathematical equivalence to a viscous solution of level-set equation, which has been often applied to an improvement of VOF method. This paper applies a solver “interThermalPhaseChangeFoam” in OpenFOAM with such a improved VOF method to a simplified model for quenching of over-heated wall. A typical heat transfer variation in over-heated wall boiling are captured, where the vapor film, nucleate boiling and convection stages are reproduced from the results of time evolution of heat flux.