Numerical Simulation of Immersion Quench Cooling Process: Part II

In this article, we present the numerical simulation of a real cylinder head quenching cooling process using a newly developed approach for immersion quenching described in Part I of this research. Computational grids, consisting of 1.6 million cells in the coolant (liquid) domain and 1.5 million cells in the solid region, are utilized to perform the ACCI coupled quenching simulation implemented in the commercial code AVL-FIRE framework. Multitude of flow features such as vapor pocket generation, bubble clustering and their disposition are captured very effectively during the computation. Comprehensive descriptions of the flow field information and the temperature pattern in the solid at different time instants are provided. A comparison of the registered temperature readings at different monitoring locations with the numerical results generates an overall very good agreement. Our results indicate the presence of intense non-uniformity in the temperature distribution within the solid region which is of grave importance in evaluating the stress and fatigue patterns generated in the quenched object. The capability of the quenching model in simulating a real-time immersion quenching application process and the efficiency in reducing the overall model size by the application of the ACCI procedure is well demonstrated.