新型油气混合器的内部流场分析  

Analysis of the internal flow field of new oil-gas mixer

作　　者：解胜 翟华[1,2] 

机构地区：[1]合肥工业大学机械与汽车工程学院,安徽合肥230009 [2]合肥工业大学工业与装备技术研究院,安徽合肥230009

出　　处：《机电工程》2016年第9期1057-1061,共5页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(51305116);安徽省合芜蚌自主创新试验区专项资助项目(20130205)

摘　　要：针对油气混合器进油量和进气量影响润滑点可靠润滑的问题,对油气混合器的工作原理、内部流场、出口管路内油气两相流分布情况等方面进行了研究。结合计算流体力学两相流基本原理,建立了新型油气混合器的流体域模型;在此基础上,分析了新型油气混合器的工作原理,利用CFX软件对新型油气混合器的内部流场进行了数值仿真模拟,检验了其形成油气的效果,并分析了出口管路内油气两相流的分布情况。研究结果表明:该油气混合器可精确调控进油量和进气量,达到油膜厚度可控,从而保证满足润滑油膜均匀性、连续性和稳定性的要求;同时,该分析过程为类似油气混合器之类复杂混合器的设计,提供了一种有效的功能检验方法,可进一步对油气混合器的工作性能进行评价,并对其结构进行优化。Aiming at the problem that the oil-gas mixers＇ oil inflow and air inflow can influence the reliability of lubrication points,experimental studies on the oil-gas mixer＇s working principle,internal flow field and the distribution of oil-gas two phase flow field in the outlet pipeline were carried out. The fluid domain model of new oil-gas mixer was established combined with the two-phase flow theory of the（ CFD）. On the basis,the working principle of the new oil-gas mixer was analyzed. In order to test the effect of the oil-gas formation,the numerical simulation of the new oil-gas mixer＇s internal flow field was carried out by CFX software. And the distribution of oil-gas two phase flow field in the outlet pipeline was studied. The results indicate that the oil-gas mixer can control the oil inflow and the air inflow accurately,and the thickness of the oil film can be controlled as well. Accordingly,the reliability of lubrication points and the uniformity,continuity and stability of the lubrication oil film can be ensured. And the analysis process provides an effective functional test method for the design of the complex mixer. The performance of the oil-gas mixer can be further evaluated,and its structure can be optimized.

关 键 词：计算流体力学 油气混合器 气液两相流场 CFX分析 

分 类 号：TH117.2[机械工程—机械设计及理论] TP391.9[自动化与计算机技术—计算机应用技术]