基于Fluent软件的回转筒壁面喷雾冷却机理分析
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摘要
喷雾冷却技术相比喷淋水冷却,具有换热系数大、冷却效率高等特点,是一种高效的节能冷却技术。基于Fluent软件对回转筒壁面喷雾冷却机理进行分析,建立高温物料经过回转筒时的外壁喷雾冷却换热模型,运用计算流体动力学技术分析雾化锥角、喷嘴流量等参数对冷却效果的影响,得到喷雾冷却温度云图、雾化液滴轨迹线,验证了喷雾冷却的效果。
Compared with the water cooling, the spray cooling technology has the characteristics of high heat transfer coefficient and high cooling efficiency. It is an efficient energy-saving cooling technology.Based on the Fluent software, the spray cooling mechanism of the rotary cylinder wall was analyzed, and the spray cooling heat transfer model of the high temperature material passing through the rotary cylinder was established. CFD was used to analyze the influence of atomization cone angle, nozzle flow rate and other parameters on cooling effect. And the spray cooling temperature cloud map and atomized droplet trajectory line were obtained. The effect of spray cooling was verified.
Compared with the water cooling, the spray cooling technology has the characteristics of high heat transfer coefficient and high cooling efficiency. It is an efficient energy-saving cooling technology.Based on the Fluent software, the spray cooling mechanism of the rotary cylinder wall was analyzed, and the spray cooling heat transfer model of the high temperature material passing through the rotary cylinder was established. CFD was used to analyze the influence of atomization cone angle, nozzle flow rate and other parameters on cooling effect. And the spray cooling temperature cloud map and atomized droplet trajectory line were obtained. The effect of spray cooling was verified.
引文
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[10]丁华,张云.基于Fluent的加油过程中燃油蒸发排放数值分析[J].机械制造,2017,55(7):45-48,53.
[2] KIM J H. Spray Cooling Heat Transfer:The State of The Art[J]. International Journal of Heat and Fluid Flow,2007,28(4):753-767.
[3] WENDELSTORF J, SPITZER K H, WENDELSTORF R.Spray Water Cooling Heat Transfer at High Temperatures and Liquid Mass Fluxes[J]. International Journal of Heat and Mass Transfer,2008,51(19-20):4902-4910.
[4]陈作炳,石志良,范涛.还原铁高效喷雾回转筒式冷却机:201010029029.4[P]. 2010-07-28.
[5]芦秋敏,雷树业.雾化喷射冷却的机理及模型研究[J].工程热物理学报, 2005,26(5):817-819.
[6]王亚青,刘明侯,刘东,等.数值研究“二次成核”在喷雾冷却中的作用[J].中国科技技术大学学报, 2009,39(4):391-397.
[7]唐家鹏. FLUENT 14.0超级学习手册[M].北京:人民邮电出版社,2013.
[8]侯燕.多喷嘴喷雾冷却实验研究与数值模拟[D].北京:中国科学院研究生院(工程热物理研究所),2014.
[9]杜志环.燃油闪急喷雾过程的数值模拟研究[D].长沙:中南大学,2011.
[10]丁华,张云.基于Fluent的加油过程中燃油蒸发排放数值分析[J].机械制造,2017,55(7):45-48,53.