无限广延法测量液体粘滞系数的实践研究  

Practice Research on Measurement of Fluid Viscosity Factor by Infinite Extension Method

作　　者：丛晓燕[1] 马超 吕刚[1] 高峰[1] 刘海涛[1] 韩岳[1] 孙丰伟[1] CONG Xiaoyan;MA Chao;LV Gang;GAO Feng;LIU Haitao;HAN Yue;SUN Fengwei(School of Information Science and Engineering,Shan Dong Agricultural University,Taian 271000,China)

机构地区：[1]山东农业大学,信息科学与工程学院,山东泰安271000

出　　处：《大学物理实验》2020年第2期69-71,共3页Physical Experiment of College

摘　　要：无限广延法测量液体的粘滞系数,关键是获取收尾时间t0。实验中释放小球时,无法严格确定小球沿圆筒的中心轴线下落,往往会产生较大的实验误差。因此在实验中对3#管,4#管,5#管,具体研究了偏移中心轴线下落给实验带来的具体影响,发现小球在管中的下落时间随着偏移中心轴线距离的增加而减小。The key to measure the viscosity coefficient of liquid by infinite extension method was to obtain the terminal time t.It is difficult to determine the ball falls along the central axis of the cylinder,which often leads to large experimental errors.The influence of the falling of the offset central axis on the experiment is studied for 3#,4#,5#cylinder.Experimental findings that the falling time of the ball decreases with the increase of the distance from the central axis.

关 键 词：无限广延法 收尾时间 蓖麻油 粘滞系数 

分 类 号：O4-34[理学—物理]