| 喷油器喷孔入口圆角对燃油流动影响的研究 |
| |
| 引用本文： | 牛志坚,谷萌,孙镇,王功亮.喷油器喷孔入口圆角对燃油流动影响的研究[J].内燃机,2019(1):19-21,24. |
| |
| 作者姓名： | 牛志坚 谷萌 孙镇 王功亮 |
| |
| 作者单位： | 淄柴动力有限公司技术中心;山东理工大学机械工程学院 |
| |
| 摘 要： | 柴油机喷油器流道内部的流动状态直接影响到燃油的雾化程度,直接影响柴油机的工作性能与排放指标。为深入研究柴油机喷嘴喷孔内部流体特征,我们以某船用大功率柴油机喷油器作为研究对象,采用三维仿真软件Fluent对燃油在喷油器油嘴内部的流动状态进行了数值模拟。结果表明:喷油器喷孔入口处不同的圆角半径将直接影响到燃油空化程度,这对后续燃油的雾化程度以及喷油器的寿命产生重大影响。
|
| 关 键 词： | 入口圆角 流体空化 湍流 k-ε模型 CFD |
Influence of Entry Fillet on Flow Cavitation in Injector |
| |
| NIU Zhijian,GU Meng,SUN Zhen,WANG Gongliang.Influence of Entry Fillet on Flow Cavitation in Injector[J].Internal Combustion Engines,2019(1):19-21,24. |
| |
| Authors: | NIU Zhijian GU Meng SUN Zhen WANG Gongliang |
| |
| Affiliation: | (Technical Center,Zichai Power Co.,Ltd.,Zibo 255000;College of Mechanical Engineerings Shandong University of Technology,Zibo 255049) |
| |
| Abstract: | The flowing state of diesel inside the injector flow channel directly affects the atomization of the fuel and directly affects the performance and emission targets of the diesel engine.In order to further study the internal fluid characteristics of the nozzle orifice of a diesel engine,this paper takes a marine high-power diesel injector as a research object.The three-dimensional simulation software Fluent is used to simulate the flow of fuel in the injector nozzle.The results show that different fille t radii at the inlet of the injector w ill directly affect the degree of fuel cavitation,which w ill have a significant impact on the degree of atomization of the subsequent fuel and the life of the injector. |
| |
| Keywords: | entry fillet fluid cavitation turbulence k-ε model CFD |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
