Numerical Investigations of Quenching Cooling Processes for Different Cast Aluminum Parts

In this paper, discussions of a recently improved Computational Fluid Dynamics (CFD) methodology for virtual experimental investigation of the heat treatment for cast aluminium parts are presented. The immersion quenching process of the heated work piece in a sub-cooled liquid pool is handled by employing the Eulerian multi-fluid modelling approach, which is implemented within the commercial CFD code AVL FIRE®. The applied heat and mass transfer rates are modelled based on the different boiling regime, which is controlled by the Leidenfrost temperature. The objective of the present research is to present an updated quenching model where variable Leidenfrost temperature is applied. Furthermore, simulation results are compared with available measurements for a wide variety of quenching scenarios involving immersion cooling of the step plate and real cylinder head with different solid parts orientations. The temperature histories predicted by the presented model fit very well with the available experimental data at different monitoring locations ©2014 Journal of Mechanical Engineering. All rights reserved.

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