文章摘要
潘家保.温度对润滑脂圆管流壁滑移特性的影响[J].润滑与密封,2018,43(3):62-68
温度对润滑脂圆管流壁滑移特性的影响
Effect of Temperature on Wall Slip of Lubricating Grease Pipe Flow
  
DOI:10.3969/j.issn.0254-0150.2018.03.010
中文关键词: 润滑脂  圆管流  壁滑移  温度  理论模型
英文关键词: lubricating grease  pipe flow  wall slip  temperature  theoretical model
基金项目:安徽高校自然科学研究项目(KJ2017A110);国家水泵及系统工程技术研究中心开放基金项目(NRCP201602);安徽工程大学引进人才科研启动基金项目(2016YQQ010).
作者单位E-mail
潘家保 安徽工程大学机械与汽车工程学院
江苏大学国家水泵及系统工程技术研究中心 
panjiabao@ahpu.edu.cn 
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中文摘要:
      为研究温度对润滑脂圆管流壁滑移特性的影响,基于润滑脂剪切流动Herschel-Bulkley(H-B)流变模型、壁滑移Rabinowich Mooney方程和圆管流理论模型,建立润滑脂圆管流壁滑移速度求解方程,分析壁滑移速度的影响因素及变化规律。利用旋转流变仪粗糙平板测试模块开展25~85 ℃下润滑脂流变特性研究,得出各温度下润滑脂H-B流变模型的参数。基于润滑脂流变特性研究结果,探究各温度下润滑脂圆管流的壁滑移速度随管径和压力梯度的变化规律,阐明壁滑移效应对润滑脂圆管流的影响规律及机制。结果表明,润滑脂圆管流壁滑移速度随管径、压力梯度的增大而增大,且温度对壁滑移具有较为明显的促进效应。
英文摘要:
      The equation of wall slip velocity during lubricating grease pipe flow was established based on Herschel Bulkley(H B) rheological model of lubricating grease shear flow,Rabinowich Mooney equation of wall slip and theoretical model of lubricating grease pipe flow,in order to study the effect of temperature on wall slip of lubricating grease pipe flow.The influence factors and variation for wall slip velocity were analyzed.The rheological properties of lubricating grease from 25 ℃ to 85 ℃ were studied by using rough measuring plate model of rotational rheometer.The parameters of H B rheological model were obtained at various temperatures.Effects of both pipe diameter and pressure gradient on wall slip velocity were investigated based on the results of lubricating grease rheological properties.The improvement effect mechanism of wall slip during lubricating grease pipe flow was illustrated.It is found that the wall slip velocity of grease pipe flow is increased with the increasing of both pipe diameter and pressure gradient,and the wall slip is obviously improved with the increasing of temperature.
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