【摘要】 采用数值仿真结合正交设计方法对工程车用散热器的主要几何参数进行了计算和分析。通过极差和方差分析,获得了各参数对散热器的散热和流动性能影响的敏感次序以及显著性水平,并拟合出参数-性能关联式。同时,进行了风洞试验验证上述数值仿真方法。结果表明:仿真结果与试验测试数据趋势吻合良好,该仿真方法可以有效地进行翅片参数对散热器流动传热性能的影响研究,有利于缩短设计周期和减少设计成本。更多还原

【Abstract】 Numerical simulation method combined with orthogonal design method was adopted to investigate the effects of fin parameters on the thermal hydraulic performance of a constructive vehicle radiator.From performance datas of 16 sample radiators with different fin geometric parameters obtained in simulation,the importance order and significance levels of these fin parameters affecting the radiator heat dissipation capacity and flow performance were achieved.Through the range difference and variance analysis,the correlation expressions between parameters and performances were fitted.The numerical simulation results coincide well in trend with the actually measured data in the wind tunnel test performed at the same time.That demonstrates the method used here may be adopted to predict the effects of fin parameters on fluid flow and heat transfer process in the radiator,and the design period and cost will be decreased.更多还原