| 4气门柴油机进气及喷雾过程的大涡模拟研究 |
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| 引用本文： | 周磊,徐春龙,柳贺,韩君.4气门柴油机进气及喷雾过程的大涡模拟研究[J].铁道机车车辆,2011,31(Z1):150-153,156. |
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| 作者姓名： | 周磊 徐春龙 柳贺 韩君 |
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| 作者单位： | 1. 中国北方发动机研究所,山西大同,037036
2. 中北大学 机电工程学院,山西太原,030051 |
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| 摘 要： | 对1台4气门柴油发动机气缸内进气过程及燃油喷雾过程采用大涡模拟方法进行了数值研究.在KIVA 3V中添加了大涡模拟程序.分别采用RANS和LES两种湍流方法对气缸内流场及燃油混合气形成过程进行了对比研究.研究表明,相比较RANS模型,利用大涡模拟可以得到非常复杂的三维湍流结构,还可以捕捉到不规则的小尺度涡团结构.
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| 关 键 词： | 柴油机 大涡模拟 小尺度结构 |
Large Eddy Simulation of Intake and Spray Process in Four Valve Diesel Engine |
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| ZHOU Lei
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XU Chun-long
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LIU He
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HAN Jun.Large Eddy Simulation of Intake and Spray Process in Four Valve Diesel Engine[J].Railway Locomotive & Car,2011,31(Z1):150-153,156. |
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| Authors: | ZHOU Lei XU Chun-long LIU He HAN Jun |
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| Institution: | ZHOU Lei1,XU Chun-long1,LIU He1,HAN Jun2(1 China North Engine Research Institute,Datong 037036 Shanxi,China,2 School of Mechatronic Engineering,North University of China,Taiyuan 030051 Shanxi,China) |
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| Abstract: | The numerical study with large eddy simulation were investigated about the intake and spray process in diesel engine with four valve.In this paper,large eddy simulation(LES) model and evaporation model were added in the CFD code KIVA3V.The flow and fuel mixture process were studied using two turbulent model(LES model and RANS model) The results show that using LES model can obtain the very complex three-dimension flow structure,and capture the small eddy structure by compareing RANS model. |
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| Keywords: | diesel large eddy simulation small eddy structure |
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