Experimental and Numerical Investigation of Fluid Cooling Channel Layout Designed by Topology Optimization

doi:10.3901/JME.2019.10.198

Abstract

Abstract: In order to achieve an optimal thermal performance of the liquid-cooled heat sink, the cooling channel layout designed by topology optimization is studied based on the heat exchange maximization problem. In the optimization stage, the Helmholtz filtering is employed to eliminate the numerical instability, and a hyperbolic tangent projection is used to obtain a clear configuration. Then three design cases with different inlet and outlet layouts are studied, and the conventional straight cooling channel is introduced as a reference case to compare the thermal performances with the optimized channel layouts. The results show that the topology optimized channel layout can provide a lower peat temperature compared with the straight channel layout, and the orthogonal diagonal inlet-outlet layout keeps the peak temperature to a minimum among three competitive inlet-outlet layout designs. Finally, the flow and thermal performances of the heat sinks are investigated experimentally. The experimental results show a good correspondence with the numerical results. Hence, the effectiveness of the proposed design method is validated.

Key words: experimental investigation, heat exchange maximization, liquid-cooled heat sink, numerical modeling, topology optimization

CLC Number:

TG156

LI Hao, DING Xiaohong, JING Dalei. Experimental and Numerical Investigation of Fluid Cooling Channel Layout Designed by Topology Optimization[J]. Journal of Mechanical Engineering, 2019, 55(10): 198-206.

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