文章摘要
裴振英,张旭.基于CFD方法多项流油膜稳定性的影响[J].润滑与密封,2014,39(3):96-100
基于CFD方法多项流油膜稳定性的影响
  
DOI:10.3969/j.issn.0254-0150.2014.03.021
中文关键词: 滑动轴承  多相流  油膜  转速  偏心率
英文关键词: journal bearing  multi phase flow  oil film  rotation speed  eccentric ratio
基金项目:
作者单位E-mail
裴振英 沈阳工程学院仿真中心 syxuzi@163.com 
张旭 沈阳工程学院仿真中心  
摘要点击次数: 1018
全文下载次数: 0
中文摘要:
      应用计算流体力学方法,使用多相流模型,建立滑动轴承中的油膜模型;计算不同的转速和偏心率下油膜 的载荷、最大压力和气化比例,分析它们随转速和偏心率的变化规律;利用该规律说明了实际汽轮发电机组在升速过程 中的稳定性的变化。结果表明:在偏心率不变的条件下,随着转速的增加,或在转速不变的条件下,随着偏心率的增 加,油膜载荷和最大压力均增加,油膜的气化比例提高,气化面积增加,因此转速过高或过低,偏心率过大或过小都会 使油膜的稳定性下降。
英文摘要:
      The model of multi phase flow oil film in journal bearing was established with CFD method.The oil film load,maximum pressure and gas liquid ratio at different rotation speed and eccentric ratio were respectively calculated.The rules of the oil film stability varied with rotation speed and eccentric ratio were obtained and the reasons of these were analyzed.The variation of stability of steam turbine generator unit in accelerating process was illustrated using the rules.The results show that the oil film load and maximum pressure are increased,the ratio and area of vaporization are expanded with increasing rotation speed at constant eccentric ratio condition or with enlarging eccentric ratio at constant speed condition.Consequently,higher rotation speed or larger eccentric ratio will deteriorate the stability of oil film.
查看全文   查看/发表评论  下载PDF阅读器
关闭

分享按钮