润滑与密封
潤滑與密封
윤활여밀봉
LUBRICATION ENGINEERING
2015年
3期
64-68
,共5页
椭圆滑动轴承%两相流%油膜特性%空化
橢圓滑動軸承%兩相流%油膜特性%空化
타원활동축승%량상류%유막특성%공화
elliptical bearing%two-phase flow%oil film properties%cavitation
采用CFD模拟软件中的多相流模型研究椭圆滑动轴承的油膜特性。建立椭圆滑动轴承SST湍流模型和Mix?ture两相流模型，分析椭圆滑动轴承的油膜特性及其气穴分布特点，对比分析考虑两相流和未考虑两相流的椭圆滑动轴承的油膜特性，验证新计算模型的正确性，并研究各种影响因素对润滑油气化的影响。结果表明：两相流模型比单相流模型更能真实反映椭圆滑动轴承的实际油膜特征；随偏心距的增加、转速的升高，气化现象越明显，且高黏度润滑油更容易产生气化现象；椭圆滑动轴承第二油楔内的润滑油比第一油楔内的润滑油更易出现气化。
採用CFD模擬軟件中的多相流模型研究橢圓滑動軸承的油膜特性。建立橢圓滑動軸承SST湍流模型和Mix?ture兩相流模型，分析橢圓滑動軸承的油膜特性及其氣穴分佈特點，對比分析攷慮兩相流和未攷慮兩相流的橢圓滑動軸承的油膜特性，驗證新計算模型的正確性，併研究各種影響因素對潤滑油氣化的影響。結果錶明：兩相流模型比單相流模型更能真實反映橢圓滑動軸承的實際油膜特徵；隨偏心距的增加、轉速的升高，氣化現象越明顯，且高黏度潤滑油更容易產生氣化現象；橢圓滑動軸承第二油楔內的潤滑油比第一油楔內的潤滑油更易齣現氣化。
채용CFD모의연건중적다상류모형연구타원활동축승적유막특성。건립타원활동축승SST단류모형화Mix?ture량상류모형，분석타원활동축승적유막특성급기기혈분포특점，대비분석고필량상류화미고필량상류적타원활동축승적유막특성，험증신계산모형적정학성，병연구각충영향인소대윤활유기화적영향。결과표명：량상류모형비단상류모형경능진실반영타원활동축승적실제유막특정；수편심거적증가、전속적승고，기화현상월명현，차고점도윤활유경용역산생기화현상；타원활동축승제이유설내적윤활유비제일유설내적윤활유경역출현기화。
The multiphase flow model of CFD simulation software was applied to study the oil film characteristics of el?liptical bearing.The SST turbulence model and Mixture two phase flow model of elliptical bearing were built,and the oil film characteristics and cavitation distribution characteristics of the bearing were analyzed.The oil film characteristics con?sidering two phase flow and without considering it were compared, and the validity of the new calculation model was proved.The various influence factors on the lubricating oil gasification were studied.The results show that two phase flow model can even better reflect the actual oil film characteristics of elliptical bearing than single phase flow model.Along with increasing of the eccentricity and rotational speed,gasification phenomenon is more obviously,and high viscosity lubricating oil is more prone to gasification phenomenon.The lubrication oil in the second oil wedge of elliptical bearing is more easy appeared gasification than that of in the first.
