化工学报Issue(6)：2063-2069,7.DOI:10.3969/j.issn.0438-1157.2014.06.016
基于变温下圆管内润滑脂流动特性的表征
Flow characteristics of grease in circular pipeline at varied temperatures
摘要
Abstract
The effect of temperature on flow characteristics of NLGI 3 lithium grease in circular pipelines was investigated. The rheological behavior was examined by using rotational rheometer and the models for velocity and stress fields were established by combining the experimental results and theoretical analysis. The experimental results show that the lithium grease presents high yield shear stresses, excellent viscosity-temperature characteristics and shear-shinning behavior. The yield stress and viscosity decrease as temperature increases, improving the fluidity. The relationships between pipeline flow characteristics and influencing factors are given by using the mathematical model described through MATLAB programming and drawing. The effect of temperature on flow characteristics indicates that higher medium temperature is in favor of lithium grease transportation.关键词
温度/润滑脂/非牛顿流体/流变学/速度场/应力场/流动特性Key words
temperature/lubricating grease/non-Newtonian fluid/rheology/velocity field/stress field/flow characteristics分类
机械制造引用本文复制引用
潘家保,程延海,朱真才,杨金勇..基于变温下圆管内润滑脂流动特性的表征[J].化工学报,2014,(6):2063-2069,7.基金项目
国家自然科学基金项目(51006117)；中国博士后科学基金特别资助项目（2012T50497）；江苏高校优势学科建设工程项目。@@@@supported by the National Natural Science Foundation of China (51006117), the Special Financial Grant from the China Postdoctoral Science Foundation (2012T50497) and the Priority Academic Program Development of Jiangsu Higher Education Institutions （51006117）
