【摘要】：為了研究增壓空氣和冷卻液對(duì)中冷器散熱性能的影響及阻力特性,采用流-固耦合傳熱模型和換熱器模型,對(duì)重型柴油機(jī)水冷中冷器內(nèi)部流場和溫度場進(jìn)行三維數(shù)值模擬,分析中冷器內(nèi)部流動(dòng)阻力損失和傳熱性能,并通過臺(tái)架試驗(yàn)對(duì)仿真結(jié)果進(jìn)行驗(yàn)證。研究結(jié)果表明:進(jìn)氣口處空氣回流較大,增加了空氣流動(dòng)的阻力和流動(dòng)不均勻性;增壓空氣流量越大,冷卻效率越高;空氣出口溫度控制在30~40℃,散熱效果較好,滿足使用要求;冷卻液溫度對(duì)中冷器冷卻性能影響較大,溫度每升高10℃,換熱效率降低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，

本文編號(hào)：2294742