卡森流体管流的减阻机理及减阻率计算  

Drag Reduction Mechanism in Pipe Flow of Casson Fluid and Calculation of Drag Reduction Rate

作　　者：夏德宏[1] 周军[1] 邬婕[1] 赵禹民[1] 

机构地区：[1]北京科技大学机械工程学院,北京100083

出　　处：《北京科技大学学报》2002年第4期452-454,共3页Journal of University of Science and Technology Beijing

摘　　要：分析了流体与固体管壁之间的粘附功,揭示了卡森流体管内流动时的减阻机理,认为流体在流动过程中滑移的产生是减阻的本质.推导出了卡森流体的减阻率表达式,讨论了各参量对减阻率的影响,并提出了实现卡森流体减阻的措施.With the exploration of the adhesive work between fluid and pipe-wall, the drag reduction mechanism for the pope flow of Casson fluid is brought to light. It is belived that wall slip is the nature of drag reduction when fluid flows in pipe flow. Further more, the drag reduction rate in pipe flow is presented, and the relevant factors are also analyzed systematically. Some pratical measure are provided to realizing dragre-duction of pipe flow of Casson fluid.

关 键 词：减阻机理 减阻率 计算 卡森流体 管流 粘度 粘附功 剪切应力 非牛顿流体 骨移 

分 类 号：O373[理学—流体力学]