落球法测液体粘滞系数实验的理论分析  

THEORETICAL ANALYSIS OF MEASURING VISCOSITY COEFFICIENT BY FALLING BALL METHOD IN THE EXPERIMENT

作　　者：曹春梅[1] 甄钊[2] 

机构地区：[1]华北电力大学数理系,河北保定071003 [2]华北电力大学电气与电子工程学院,河北保定071003

出　　处：《物理与工程》2013年第2期39-41,共3页Physics and Engineering

摘　　要：分析了斯托克斯定律及其修正项的适用范围,讨论了落球法测液体粘滞系数实验中液体粘滞系数和落球直径对雷诺数的影响,从理论上给出了实验中落球进入液体后匀速运动的判据.Scope of application of Stokes law and modification factors are analyzed. The effect of viscosity coefficient and the falling ball diameter to Reynolds number in the experiment of measuring viscosity coefficient by falling ball method are discussed. The criterion of uniform motion after the ball falls in the liquid is given in theory.

关 键 词：粘滞系数 落球法 雷诺数Re 斯托克斯定律 

分 类 号：O4-33[理学—物理]