非定常沸騰流れと連成する焼き入れ過程の熱伝達数値シミュレーション

抄録

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. Recently, a new solver “interThermalPhaseChangeFoam” in OpenFOAM has been proposed for liquid-vapor thermal phase change flows by using improved VOF method. The computational domain is a cube with the heating wall at the bottom for both the changed and fixed wall temperature cases. The three stages that is the vapor film stage, boiling stage and convection stage have been reproduced from the results of time evolution of heat flux.