摘要
流体的动力学粘度是描述流体黏性运动的重要参数,实验上对流体动力学粘度的测量有诸如转筒法、落球法、毛细管法等多种方法。本文基于物理实验中常见的磁性球的单摆运动,利用霍尔元件测量磁性球运动过程中不同时刻的磁场变化,进而通过分析得到不同时刻磁性球的位置,通过拟合得到磁性球摆动过程中振幅随时间的衰减关系,最终得到空气动力学粘度的大小。
The dynamic viscosity of fluid is an important parameter to describe the viscosity movement of fluid.There are many methods to measure the fluid dynamic viscosity in experiment,such as rotating cylinder method,falling ball method,capillary method and so on.In this paper,based on the simple pendulum movement of a common magnetic ball,using the Hall element measuring magnetic field in different time,and the location of the different time is obtained by analysis of variation of the magnetic field,the location of the magnetic ball is obtained by fitting oscillation amplitude over time,finally the value of the dynamic viscosity of air will be obtained through data analysis.
作者
马果
李超
朱振鹏
刘滋雨
黄骏文
张澳运
MA Guo;LI Chao;ZHU Zhenpeng;LIU Ziyu;HUANG Junwen;ZHANG Aoyun(School of Mathematics and Physics,Nanyang Institute of Technology,Nanyang 473000,China)
出处
《大学物理实验》
2022年第2期45-48,共4页
Physical Experiment of College
基金
南阳理工学院2021年实验室开放基金项目
关键词
动力学粘度
霍尔元件
单摆
蒙特卡洛模拟
dynamic viscosity
Hall element
simple pendulum
Monte-Carlo simulation
