CONTROL OF FLOW PASSING A CIRCULAR CYLINDER BY STEADY SUCTION BASED ON A STRUCTURED POROUS SURFACE

被引：0

作者：

Gao D.-L. ^{[1
,2
,3
]}

Yu H.-Y. ^{[1
,2
,3
]}

Chen W.-L. ^{[1
,2
,3
]}

Li H. ^{[1
,2
,3
]}

机构：

[1] Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters, The Ministry of Industry and Information Technology, Harbin Institute of Technology, Heilongjiang, Harbin

[2] Lab of Intelligent Civil Infrastructure, Harbin Institute of Technology, Heilongjiang, Harbin

[3] Key Lab of Structures Dynamic Behavior and Control, The Ministry of Education, Harbin Institute of Technology, Heilongjiang, Harbin

来源：

Gongcheng Lixue/Engineering Mechanics | 2024年 / 41卷 / 06期

关键词：

circular cylinder flow; flow control; particle image velocimetry; porous surface; wind tunnel test;

D O I：

10.6052/j.issn.1000-4750.2022.05.0435

中图分类号：

学科分类号：

摘要：

Active flow control effects of the circular cylinder wake flow with a Reynolds number of 10000 are investigated by wind tunnel tests. The flow control is conducted by steady suction based on a structured porous surface, and the test cases have various equivalent suction coefficient Cµ. The two-dimensional wake flow fields are measured by particle image velocimetry (PIV) technique. Based on the flow fields, the results of proper orthogonal decomposition (POD) modal characteristics, instantaneous vorticity evolution, power spectrum density of fluctuating velocity, time-averaged flow characteristics and drag coefficient estimation are analyzed and compared to evaluate the flow control effects. The results show that under flow control, POD modal energy distributions are changed, the streamwise vortex energy transportation process is strengthened and the vortex shedding mode is transformed when Cµ is large enough. The shear layers are elongated along the streamwise direction, and the upper and lower layers become parallel to each other; while the vorticity values are restrained. The dominant frequency of the fluctuating flow velocity is curbed and the turbulence fluctuation and momentum exchange effects are suppressed. The estimated drag coefficient can be reduced up to about 11% of that of the uncontrolled cylinder. © 2024 Tsinghua University. All rights reserved.

引用

页码：30 / 43

页数：13

共 40 条

[1]

FU Jiyang, WU Jiurong, XU An, Some issues on wind resistant optimization design and on wind-induced vibration control of tall buildings, Engineering Mechanics, 39, 5, (2022)

[2]

LIAO Haili, LI Mingshui, MA Cunming, Et al., State-of-the-art review of bridge wind engineering in 2019 [J], Journal of Civil and Environmental Engineering, 42, 5, (2020)

[3]

GUO Tao, ZHANG Wenhui, WANG Wenquan, Et al., Effects of high mass and damping ratio on VIV of a circular cylinder with low reynolds number based on IBM, Engineering Mechanics, 39, 3, (2022)

[4]

REN Chongcui, LI Jianhui, TANG Yi, Et al., Performance study of main structure and glass curtain wall of high-rise building under combined action of wind and earthquake [J], Engineering Mechanics, 39, 7, (2022)

[5]

SUN Yifei, LIU Qingkuan, LI Zhen, Et al., Study on time-frequency characteristics of wind-induced vibration of non-standard circular stayed cables, Engineering Mechanics, 38, (2021)

[6]

PETTIGREW M J, TAYLOR C E, FISHER N J, Et al., Flow-induced vibration: Recent findings and open questions [J], Nuclear Engineering and Design, 185, 2, (1998)

[7]

CHEN Zhengqing, Bridge wind engineering, (2005)

[8]

LIU Qingkuan, SUN Yifei, ZHANG Leijie, Et al., Study on the influence of dent on aerodynamic performance of stay cables of cable-stayed bridge, Engineering Mechanics, 36, (2019)

[9]

DONG Xin, DING Jiemin, ZOU Yunfeng, Et al., Effect of rounded corners on wind load characteristics of rectangular tall buildings, Engineering Mechanics, 38, 6, (2021)

[10]

CHOI H, JEON W P, KIM J., Control of flow over a bluff body [J], Annual Review of Fluid Mechanics, 40, 1, (2008)

← 1 2 3 4 →