长圆杆风致压差阻力及其阻力系数的测定
陈力根 1 ,郑茂群 1 ,张硕 1 ,李宗琴 1 ,冯卓宏 1,2*
1.福建师范大学 物理与能源学院,福建 福州 350117;2.福建师范大学 物理学国家级实验教学示范中心,福建 福州 350117
The Measurement of Wind-nduced Pressure Dragand Drag Coefficient of a Long Cylindrical Rod
CHEN Ligen1 ,ZHENG Maoqun1 ,ZHANG Shuo1 , LI Zongqin1 , FENG Zhuohong1,2*
摘要
针对位于风场中的长圆杆所受的风致压差阻力及其阻力系数的测定设计了综合性实验。自制风场均一的吸入式风洞,测量处于匀流场中的长圆杆的杆周风压,计算得到杆周压强系数分布及长圆杆单位长度所受的压差阻力。基于实验参数,利用 Fluent 软件模拟杆周风压分布,所得到的模拟结果与实验结果较为吻合,证明了模型的准确性。以此为基础,数值模拟了风速、杆直径等因素对长圆杆在风场中所受的压差阻力的影响,并确定该实验环境下的阻力系数。
关键词:
压差阻力
阻力系数
长圆杆
均一风场
亚临界状态
Abstract:
A comprehensive experiment to measure the wind-induced pressure drag and drag coellicient of aong cylindrical rod was designed. A self-made suction wind tunnel was built, the wind pressure around the rodin a uniform flow field was measured, and the pressure distribution coefficient and the pressure drag werecalculated, Based on experimental parameters, Fluent software was used to simulate the wind pressuredistribution around the rod. The numerical simulation results are in good agreement with the experiment aresults, which proved the aecuracy of the simulation model.0n this basis, the influences of wind speed and roddiameter on the pressure drag of the long eylindrical rod were simulated numerically , and the drag coefficient inthe experimental environment was determined.
Key words:
pressure drag
drag coelfieient
long cylindrical rod
uniform wind field
suberitical state
发布日期: 2024-10-25
引用本文:
陈力根 , 郑茂群 , 张 硕 , 李宗琴 , 冯卓宏 .
长圆杆风致压差阻力及其阻力系数的测定
[J]. 大学物理实验, 2024, 37(5): 58-62.
CHEN Ligen , ZHENG Maoqun , ZHANG Shuo , LI Zongqin, FENG Zhuohong.
The Measurement of Wind-nduced Pressure Dragand Drag Coefficient of a Long Cylindrical Rod
. Physical Experiment of College, 2024, 37(5): 58-62.
链接本文:
http://dawushiyan.jlict.edu.cn/CN/10.14139/i.cnki.cn22-228.2024.05.011
或
http://dawushiyan.jlict.edu.cn/CN/Y2024/V37/I5/58
[1]
. [J]. Physical Experiment of College, 2020, 33(1): 0
.
[2]
. [J]. Physical Experiment of College, 2020, 33(1): 0
.
[3]
WU Ming, ZENG Hong, ZHANG Wenpeng, ZHANG Yuanwei, DAI Zhenbing.
Theoretical and Experimental Research of A zimuthal-Radial Pendulum
[J]. Physical Experiment of College, 2020, 33(1): 1
-6
.
[4]
LIU Weiwei, SUN Qing, LIU Chenglin. Research on Selection of Critical Magnetization Current for Measuring Charge-Mass Ratio of Electron by Magnetron Controlling
[J]. Physical Experiment of College, 2020, 33(1): 7
-9
.
[5]
DENG Li, LIU Yang, ZHANG Hangzhong, ZHOU Kewei, ZHAO guoru, WEI luanyi.
MATLAB simulation of Fourier transform of Gaussian beam and the spatial filtering effects basing on 4F optical imaging system
[J]. Physical Experiment of College, 2020, 33(1): 10
-16
.
[6]
MA Kun.
Experiment Study on the Measuring Young' s Modulus by Stretching
[J]. Physical Experiment of College, 2020, 33(1): 17
-20
.
[7]
FEI Xianxiang, CHEN Chunlei, WANG Wenhua, SHI Wenqing, HUANG Cunyou.
Design of Lens Group Focal Length Measurement System Based on Object-Image Parallax Comparison
[J]. Physical Experiment of College, 2020, 33(1): 21
-24
.
[8]
LI Chunjiang, LI Luyu, YANG Jinglei, LI Tingrong, XIANG Wenli.
A New Method for Simple and Rapid Measurement of Refractive Index
[J]. Physical Experiment of College, 2020, 33(1): 25
-28
.
[9]
WANG Cuiping, YAO Mengyu, YE Liu, LI Aixia, ZHANG Ziyun, DAI Peng.
Progress and Applications of Electron Spin Resonance in Biology
[J]. Physical Experiment of College, 2020, 33(1): 29
-33
.
[10]
CHEN Yingmo, SHEN Siyi, WANG Jie.
Study on the Characteristics of Silicon Photocells
[J]. Physical Experiment of College, 2020, 33(1): 34
-36
.
Viewed
Full text
Abstract
Cited
Shared
Discussed