某控制器液冷板仿真优化设计与评估

某发动机控制器中驱动板采用液冷散热技术，为此开展了液冷板的散热性能仿真优化设计与力学性能评估。首先基于液冷板外形结构提出一种S形流道结构设计方案，接着仿真验证了液冷板的散热性能，并基于仿真结果优化了流道结构。优化结果表明，液冷板上最大温差由10.41 ℃降为4.82 ℃，满足温差不大于5 ℃的设计要求，散热性能改善117%。进一步评估流体入口压力10 MPa工况下的液冷板力学性能，流–固耦合仿真得到的最大等效应力为71.59 MPa，远低于液冷板铝合金材料屈服强度255 MPa，力学结构可靠。

Simulation Optimization Design and Evaluation of Liquid Cold Plate on a Controller

The liquid cooling technology is used for driver board in an engine controller, so the simulation optimization design of heat dissipation performance and the mechanical property evaluation of the liquid cold plate are carried out in this paper. Firstly, an S-shaped flow channel design scheme is proposed based on the external structure of the liquid cold plate. Then the heat dissipation performance of the liquid cold plate is verified by simulation, and the flow channel structure is optimized based on the simulation results. The optimization results show that the maximum temperature difference on the liquid cold plate is reduced from 10.41 ℃ to 4.82 ℃, which meets the design requirement that the maximum temperature difference is not more than 5 ℃, and the heat dissipation performance is improved by 117%. Further evaluation of the mechanical performance of the liquid cold plate under a fluid inlet pressure of 10 MPa is performed. The maximum equivalent stress obtained from fluid-structure interaction simulation is 71.59 MPa, which is far lower than the 255 MPa yield strength of the aluminum alloy material of the liquid cold plate, which indicates that the mechanical structure is reliable.