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14 pages, 3558 KiB  
Technical Note
Experimental and Numerical Investigations into Heat Transfer Using a Jet Cooler in High-Pressure Die Casting
by Jan Bohacek, Krystof Mraz, Vladimir Krutis, Vaclav Kana, Alexander Vakhrushev, Ebrahim Karimi-Sibaki and Abdellah Kharicha
J. Manuf. Mater. Process. 2023, 7(6), 212; https://doi.org/10.3390/jmmp7060212 - 28 Nov 2023
Cited by 4 | Viewed by 3013
Abstract
During high-pressure die casting, a significant amount of heat is dissipated via the liquid-cooled channels in the die. The jet cooler, also known as the die insert or bubbler, is one of the most commonly used cooling methods. Nowadays, foundries casting engineered products [...] Read more.
During high-pressure die casting, a significant amount of heat is dissipated via the liquid-cooled channels in the die. The jet cooler, also known as the die insert or bubbler, is one of the most commonly used cooling methods. Nowadays, foundries casting engineered products rely on numerical simulations using commercial software to determine cooling efficiency, which requires precise input data. However, the literature lacks sufficient investigations to describe the spatial distribution of the heat transfer coefficient in the jet cooler. In this study, we propose a solver using the open-source CFD package OpenFOAM and free library for nonlinear optimization NLopt for the inverse heat conduction problem that returns the desired distribution of the heat transfer coefficient. The experimental temperature measurements using multiple thermocouples are considered the input data. The robustness, efficiency, and accuracy of the model are rigorously tested and confirmed. Additionally, temperature measurements of the real jet cooler are presented. Full article
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