一种新型导流式喷嘴的Fluent仿真分析
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摘要
基于两相流基本理论,建立了新型导流式喷嘴与普通孔式喷嘴的计算流体力学模型,并使用Ansys ICEM对计算域划分了网格。根据实验中油气润滑系统所使用的工作参数,通过Ansys Fluent流体分析软件对两种喷嘴的射流特性进行了仿真计算。结果显示:在入口同速同压条件下或实测入口条件下,新型导流式喷嘴在射流出口速度以及供油均匀性上都比普通孔式喷嘴要好;仿真结果与在实验室中测量的数据有较好的相关性。数据为油气润滑系统中喷嘴的设计及优化提供了依据。
Based on the theories of two-phase flow,computational fluid dynamic models have been presented for both a classical nozzle and a novel guide-type nozzle,and Ansys ICEM was used for thediscretization of the computation domains.According to the working parameters of the oil-air lubricating system in the experiments,Ansys Fluent was used to calculate the jet flow properties for the two kinds of nozzles. The results showed that under the conditions of the same inlet pressure and velocity or those measured in the lab tests the novel guide-type nozzle could present higher exit velocity than the ordinary nozzle,and oil supply was provided with more uniformity. Good correlation was obtained between the theoretical results and the lab tests. This work provides basic data for nozzle parameter design and optimization for oil-air lubrication.
Based on the theories of two-phase flow,computational fluid dynamic models have been presented for both a classical nozzle and a novel guide-type nozzle,and Ansys ICEM was used for thediscretization of the computation domains.According to the working parameters of the oil-air lubricating system in the experiments,Ansys Fluent was used to calculate the jet flow properties for the two kinds of nozzles. The results showed that under the conditions of the same inlet pressure and velocity or those measured in the lab tests the novel guide-type nozzle could present higher exit velocity than the ordinary nozzle,and oil supply was provided with more uniformity. Good correlation was obtained between the theoretical results and the lab tests. This work provides basic data for nozzle parameter design and optimization for oil-air lubrication.
引文
[1]孔祥东,姚静,俞滨.油气润滑系统发展综述[J].润滑与密封,2012,37(6):91-95.(Kong Xiang-dong,Yao Jing,Yu Bin Etc.Summary of oil-air lubricationsystem development[J].Lubrication Engineering,2012,37(6):91-95.)
[2]刘成,张进华,闫柯.喷嘴结构对高速滚动轴承油气润滑两相流特性的影响[J].润滑与密封,2015(1):28-31+36.(Liu Cheng,Zhang Jin-hua,Yan Ke.Influence of nozzle structure on thetwo-phase flow characteristic in oil-air lubrication system for high-speed rolling bearing. Lubrication Engineering,2015(1):28-31+36.)
[3]王莹.油气润滑系统中喷嘴的工作性能研究[D].北京:北方工业大学,2015.(Wang Ying.Research on the working performances of a nozzle in theoil-air lubrication system[D].Beijing:North China University of Techn-ology,2015.)
[4]许瑞,杜长龙,周浩.基于Fluent的喷嘴型腔对射流影响的模拟仿真[J].矿山机械,2010(19):23-27.(Xu Rui,Du Chang-long,Zhou Hao.Simulation on influence of nozzleshaped cavity on water jet based on Fluent[J].Mining&ProcessingEquipment,2010(19):23-27)
[5]张友平.气液润滑喷嘴的CAE分析研究[D].武汉:武汉理工大学,2007.(Zhang You-ping.CAE analysis and study of the nozzle for oil-airlubrication[D].Wuhan:Wuhan University of Technology,2007.)
[6]毛和兵.高速滚动轴承油气二相流润滑试验研究[D].南京:东南大学,2010.(Mao He-bing.Investigation of high speed rolling bearings under oil-airlubrication[D].Nanjing:Southeast University,2010.)
[7]Mouronval A S,Hadjadj A,Kudryavtsev A N.Numerical investigation oftransient nozzle flow[J].Shock Waves,2003,12(5):403-411.
[8]刘牧原.高速滚动轴承油气润滑实验研究[D].青岛:青岛理工大学,2015.(Liu Mu-yuan.Experimental studies on the high-speed rolling bearingwith oil-air lubrication[D].Qingdao:Qingdao University of Technology,2015.)
[2]刘成,张进华,闫柯.喷嘴结构对高速滚动轴承油气润滑两相流特性的影响[J].润滑与密封,2015(1):28-31+36.(Liu Cheng,Zhang Jin-hua,Yan Ke.Influence of nozzle structure on thetwo-phase flow characteristic in oil-air lubrication system for high-speed rolling bearing. Lubrication Engineering,2015(1):28-31+36.)
[3]王莹.油气润滑系统中喷嘴的工作性能研究[D].北京:北方工业大学,2015.(Wang Ying.Research on the working performances of a nozzle in theoil-air lubrication system[D].Beijing:North China University of Techn-ology,2015.)
[4]许瑞,杜长龙,周浩.基于Fluent的喷嘴型腔对射流影响的模拟仿真[J].矿山机械,2010(19):23-27.(Xu Rui,Du Chang-long,Zhou Hao.Simulation on influence of nozzleshaped cavity on water jet based on Fluent[J].Mining&ProcessingEquipment,2010(19):23-27)
[5]张友平.气液润滑喷嘴的CAE分析研究[D].武汉:武汉理工大学,2007.(Zhang You-ping.CAE analysis and study of the nozzle for oil-airlubrication[D].Wuhan:Wuhan University of Technology,2007.)
[6]毛和兵.高速滚动轴承油气二相流润滑试验研究[D].南京:东南大学,2010.(Mao He-bing.Investigation of high speed rolling bearings under oil-airlubrication[D].Nanjing:Southeast University,2010.)
[7]Mouronval A S,Hadjadj A,Kudryavtsev A N.Numerical investigation oftransient nozzle flow[J].Shock Waves,2003,12(5):403-411.
[8]刘牧原.高速滚动轴承油气润滑实验研究[D].青岛:青岛理工大学,2015.(Liu Mu-yuan.Experimental studies on the high-speed rolling bearingwith oil-air lubrication[D].Qingdao:Qingdao University of Technology,2015.)