Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 08, 2024 - September 11, 2024
This paper describes the prediction model of the heat transfer performance of a heat sink from the viewpoint of 1DCAE for a heat transfer enhancement technology that combines pulsating flow and a heat sink, which is expected to be a next-generation heat transfer enhancement technology. The modified pulsation Strouhal number proposed by the authors was used to construct the prediction model. The target of the prediction model is a pin-fin heat sink, which is widely used as a heat transfer enhancement device and is assumed to have three pin fins arranged in a row. This paper discusses the modeling of heat transfer phenomena on the downstream surface of a heating element, where heat transfer enhancement by pulsating flow is prominent, as a foothold for the model construction. The heat transfer performance of the heat sink was evaluated using the Nusselt number. As a result, the heat transfer performance of the entire heat sink was predicted with an error of less than 5.5% compared to the Nusselt number obtained by 3D thermo-fluid analysis. Predicting the heat transfer performance for different pin fin locations and modeling the heat transfer phenomena that follow the time variation of the flow velocity are future issues.
