【摘要】 利用多场耦合方法,研究微通道热沉传热性能及其优化设计方法。基于间断有限元算法,分析其影响因素,提出微通道几何结构的数学优化模型。数值模拟了35 mm×35 mm微通道热沉的温度和流场分布,分析不同几何结构参数与最优参数对微通道热沉的温度、压力降以及综合传热因子等参数的影响。结果表明优化后模型的综合传热性能提高了65.4%,充分证明优化模型的可靠性。更多还原

【Abstract】 The heat transfer performance and the optimization design method of microchannel heat sink were investigated with multi-fields coupling method. Based on the discontinuous finite element algorithm, the affecting factors were analyzed, with the mathematical optimization model for microchannel geometry proposed. The temperature and the flow field distribution of 35 mm×35 mm microchannel heat sink were numerically simulated, with the effects of different geometric structure parameters and optimal parameters on the temperature, pressure drop and comprehensive heat transfer factor of microchannel heat sink analyzed. The results show that the comprehensive heat transfer performance of the optimized model is improved by 65.4%, which fully proves the reliability of the mathematical optimization model.更多还原