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测定不同形状物体空气阻力系数的实验

  • 刘扬正 ,
  • 钱仰德
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  • 南京工程学院数理部,江苏南京211167
刘扬正( 1964-) ,男,安徽东至人,南京工程学院数理部教授,博士,主要从事大学物理教学和非线性

收稿日期: 2016-01-05

  修回日期: 2016-05-06

  网络出版日期: 2017-03-20

基金资助

南京工程学院创新基金项目( CKJB201218) 资助

The experiment of measurement the air drag coefficient   of different shape objects

  • LIU Yang-zheng ,
  • QIAN Yang-de
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  • Department of Mathematics and Physics,Nanjing Institute of Technology,Nanjing, Jiangsu 211167,China

Received date: 2016-01-05

  Revised date: 2016-05-06

  Online published: 2017-03-20

摘要

设计空气流速连续可调的小型风洞,对圆形平板、圆柱体、流线体的空气阻力系数进行测量. 利用U 型管中水柱的高度差表达孔板法中空气的流速,通过悬臂梁力传感器测量测试物受到的空气阻力,根据空气阻力和U 型管中水柱的高度差的关系测定空气阻力系数.

本文引用格式

刘扬正 , 钱仰德 . 测定不同形状物体空气阻力系数的实验[J]. 大学物理, 2017 , 36(3) : 16 -19 . DOI: 10.16854 /j.cnki.1000-0712.2017.03.005

Abstract

In order to measure the air drag coefficients for the circular plate, the cylinder and the streamline   body,a small wind tunnel of adjustable air velocity is designed. The height difference of U type tube in the water column is used to express the air velocity with method of orifice plate through a cantilever beam force sensor measurement air drag of test item. The air drag coefficient is determined according to the air resistance and the difference of the height of the water in U tube.
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