田杰安,李世伟,闫伟,王桂华   

    摘要：利用STAR-CCM+软件对某款设计中的散热器进行了流动与传热性能的分析,分析结果显示,按空气来流方向为散热器芯体前端,空气侧的对流换热系数远远高于其后端。这表明散热器芯体前端的利用率较高。将散热器芯体变薄之后,分别计算空气来流速度为5m/s、10m/s和15m/s三工况下其单芯体散热量。在来流速度为15m/s的工况下修改后散热器的散热量为原散热器的75%左右,并且随着来流速度的降低,该数值逐渐的增大。这样在相同的散热需求时,新的结构可以较大的节约材料。

    关键词： 散热器;单芯体散热量;CFD

    Abstract: The flow and heat transfer performance analysis of a radiator under design has been proceeded by the software STAR-CCM+.The results indicate that the air side convection heat transfer coefficient at the front part of the radiator is far above the latter part.And it suggests the utilization ratio of the front part is higher than the latter part.After the thickness of the radiator is reduced,three simulations at air speed at5m/s,10m/s and15m/s were conducted,the single core heat duty of the thinner one is about 75% of the thicker one when the air speed is at15m/s.And as the speed of air become lower,the ratio becomes higher.So in the same cooling demand,the new radiator can reduce material cost greatly.

    Keywords: Radiator;Single Core Heat Duty;CFD

    基金项目: 国家十二五科技支撑计划(2011BAG04B02):工程机械用串联式混合动力系统开发;; 山东省科技发展计划(2011GGX1040):汽车散热器优化设计平台研发

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