Analysis of the internal flow field of new oil gas mixer
XIE Sheng1, ZHAI Hua1,2
(1.School of Mechanical and Automotive Engineering, Hefei University of Technology, Hefei 230009, China; 2.Industrial & Equipment Technology Research Institute, Hefei University of Technology, Hefei 230009, China)
 

Abstract: 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.
Key words: computational fluid dynamics CFD; oilgas mixer; gasliquid two phase flow field; CFX analysis