柴油机水冷中冷器冷却性能仿真与试验
发布时间：2018-10-25 20:24
【摘要】：为了研究增压空气和冷却液对中冷器散热性能的影响及阻力特性,采用流-固耦合传热模型和换热器模型,对重型柴油机水冷中冷器内部流场和温度场进行三维数值模拟,分析中冷器内部流动阻力损失和传热性能,并通过台架试验对仿真结果进行验证。研究结果表明:进气口处空气回流较大,增加了空气流动的阻力和流动不均匀性;增压空气流量越大,冷却效率越高;空气出口温度控制在30~40℃,散热效果较好,满足使用要求;冷却液温度对中冷器冷却性能影响较大,温度每升高10℃,换热效率降低5%~10%。
[Abstract]:In order to study the effect of pressurized air and coolant on the heat dissipation and resistance characteristics of the intercooler, the flow field and temperature field in the water-cooled intercooler of heavy duty diesel engine were simulated by using the fluid-solid coupled heat transfer model and the heat exchanger model. The flow resistance loss and heat transfer performance in the intercooler are analyzed, and the simulation results are verified by bench test. The results show that the flow resistance and non-uniformity of air flow are increased due to the large reflux of air at the inlet, and the cooling efficiency increases with the increase of pressurized air flow rate. The air outlet temperature is controlled at 30 ~ 40 鈩，
本文编号：2294742
[Abstract]:In order to study the effect of pressurized air and coolant on the heat dissipation and resistance characteristics of the intercooler, the flow field and temperature field in the water-cooled intercooler of heavy duty diesel engine were simulated by using the fluid-solid coupled heat transfer model and the heat exchanger model. The flow resistance loss and heat transfer performance in the intercooler are analyzed, and the simulation results are verified by bench test. The results show that the flow resistance and non-uniformity of air flow are increased due to the large reflux of air at the inlet, and the cooling efficiency increases with the increase of pressurized air flow rate. The air outlet temperature is controlled at 30 ~ 40 鈩，
本文编号：2294742
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