润滑与密封
潤滑與密封
윤활여밀봉
Lubrication Engineering
2015年
9期
47-52
,共6页
三油楔轴承%两相流%油膜特性%空化
三油楔軸承%兩相流%油膜特性%空化
삼유설축승%량상류%유막특성%공화
three oil wedges bearing%two-phase flow%oil film properties%cavitation
运用CFD模拟软件中的多相流模型、 SST湍流模型求解Navier?Stokes 方程，研究三油楔滑动轴承的油膜特性。建立三油楔滑动轴承的几何模型，通过合理的网格划分，采用CFD软件计算分析三油楔滑动轴承中3个油楔内润滑油的油膜特性及其气穴分布特点，研究转速、润滑油黏度对润滑油气化的影响，并与未考虑两相流的三油楔轴承的油膜特性进行对比分析。结果表明：两相流模型更能真实反映实际的油膜特征；转速高、润滑油黏度大越容易产生气化现象；黏度对主承载区的影响较大，而转速对非主承载区的影响较大。
運用CFD模擬軟件中的多相流模型、 SST湍流模型求解Navier?Stokes 方程，研究三油楔滑動軸承的油膜特性。建立三油楔滑動軸承的幾何模型，通過閤理的網格劃分，採用CFD軟件計算分析三油楔滑動軸承中3箇油楔內潤滑油的油膜特性及其氣穴分佈特點，研究轉速、潤滑油黏度對潤滑油氣化的影響，併與未攷慮兩相流的三油楔軸承的油膜特性進行對比分析。結果錶明：兩相流模型更能真實反映實際的油膜特徵；轉速高、潤滑油黏度大越容易產生氣化現象；黏度對主承載區的影響較大，而轉速對非主承載區的影響較大。
운용CFD모의연건중적다상류모형、 SST단류모형구해Navier?Stokes 방정，연구삼유설활동축승적유막특성。건립삼유설활동축승적궤하모형，통과합리적망격화분，채용CFD연건계산분석삼유설활동축승중3개유설내윤활유적유막특성급기기혈분포특점，연구전속、윤활유점도대윤활유기화적영향，병여미고필량상류적삼유설축승적유막특성진행대비분석。결과표명：량상류모형경능진실반영실제적유막특정；전속고、윤활유점도대월용역산생기화현상；점도대주승재구적영향교대，이전속대비주승재구적영향교대。
By using the multiphase flow model and the SST turbulence model of CFD simulation software to solving Navier?Stokes equation,oil film characteristics of three oil wedges bearing were studied.A physical model of three oil wed?ges bearing was built.By meshing reasonable grids and using CFD simulation software,the oil film characteristics and cavi?tation distribution characteristics of the lubrication oil in the three oil wedges of three oil wedges sliding bearing were ana?lyzed and calculated,and the influence of rotational speed and viscosity on the lubricating oil cavitation was studied.The oil film characteristics obtained with two?phase flow model were compared with those obtained with single phase flow model. The results show that two phase flow model can better reflect the actual oil film characteristics.The oil cavitation phenome?non is easily promoted at high rotational speed of bearing and viscosity of lubricating oil.Viscosity has a greater influence on the primary load bearing field,but rotational speed has a greater influence on the other load bearing fields.
