Numerical Investigation of Conjugate Heat Transfer in a Straight Cooling Channel.

To accurately predict the cooling performance of internal cooling channels, it is critical to properly model the heat transfer mechanism near the solid-liquid interfaces. In this study, a single straight cooling pipe is used to study the modelling of the heat transfer at the solid-liquid interface. Two turbulence models and two inlet flow conditions have been applied and compared. A mesh independence study has also been conducted. Results show that the inlet flow condition does not have a significant impact on the prediction of the overall cooling performance. It has been shown that both the Realizable k-ε and Shear Stress Transport k-ω turbulence models have the capability to accurately simulate both the turbulent flow and the convective heat transfer. Numerical results have been compared with experiments to ensure the validity of the numerical model. This study addresses fundamental modelling issues of importance for a subsequent numerical investigation of the cooling performance of conformal cooling channels in injection molds. [ABSTRACT FROM AUTHOR]