三棱柱尺度比对尾流场的影响

江裕荣; 江建华; 鲍锋

doi:10.7638/kqdlxxb-2018.0015

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三棱柱尺度比对尾流场的影响

研究论文 | 更新时间：2026-05-28

- 三棱柱尺度比对尾流场的影响
- Effect of aspect ratio of a triangular prism on wake field
- 空气动力学学报 2019年37卷第6期页码：901-907
- 作者机构：
  
  厦门大学航空航天学院,福建,厦门,361005
- 作者简介：
  
  江裕荣(1993-), 男, 福建福州人, 硕士, 研究方向:实验流体力学.E-mail:1723243984@qq.com
  鲍锋(1961-), 男, 辽宁沈阳人, 博士, 教授, 研究方向:实验流体力学.E-mail:fbao@xmu.edu.cn
- 基金信息：
  
  国家自然科学基金面上项目（11072206）;福建省科学基金（2012J01023）
- DOI：10.7638/kqdlxxb-2018.0015
  中图分类号： V211.76
- 纸质出版：2019
- 稿件说明：
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江裕荣, 江建华, 鲍锋. 三棱柱尺度比对尾流场的影响[J]. 空气动力学学报, 2019, 37(6): 901-907.

JIANG Yurong, JIANG Jianhua, BAO Feng. Effect of aspect ratio of a triangular prism on wake field[J]. 2019, 37(6): 901-907.
江裕荣, 江建华, 鲍锋. 三棱柱尺度比对尾流场的影响[J]. 空气动力学学报, 2019, 37(6): 901-907. DOI： 10.7638/kqdlxxb-2018.0015.

JIANG Yurong, JIANG Jianhua, BAO Feng. Effect of aspect ratio of a triangular prism on wake field[J]. 2019, 37(6): 901-907. DOI： 10.7638/kqdlxxb-2018.0015.

摘要

应用粒子成像测速技术（Particle Image Velocimetry，PIV）对不同柱体截面尺度比

（

=3.8、1.9、1.2、0.9、0.7）的三棱柱在雷诺数

=500条件下的尾流场进行定量测量。对尾流场进行定常和非定常分析，同时结合本征正交分解法和时间空间关联法，研究尺度比

对尾流场相干结构以及尾流场中涡街稳定运输区和涡街流向运输速率的影响。研究发现，三棱柱尺度比

的减小对尾流宽度、尾涡形成长度都有明显的促进作用，但旋涡脱落变慢，非定常性变弱。分析各阶模态对湍动能的贡献，发现随着尺度比

的减小，高阶模态湍动能占比之和有所增加。这就导致尾流场愈加不稳定，涡街稳定运输区域、涡街流向输运速率均减小。同时尾流宽度增大，尾流场阻力系数

增大。

Abstract

The wake field of a triangular prism is studied quantitatively in this paper by using particle image velocimetry (PIV) measurement

with different aspect ratios

(

=3.8

1.9

1.2

0.9

and 0.7) at a Reynolds number

=500. On the basis of steady and unsteady analyses

proper orthogonal decomposition (POD) and time-space cross correlation method are performed to analyse the influence of aspect ratios

on the coherent structure of the wake field

the steady-state transport zone

and vortex streamwise transport rate. The results show that

an increase in the width of the wake flow and the length of the wake vortex is gene

rally related to a decrease in aspect ratio

leading to vortex shedding slowing down and the unsteadiness of wake field weakening. A POD was performed to analysis the contribution of each mode on turbulent kinetic energy. It was found that the sum of high-order modal kinetic energy increased at low aspect ratio

with unstable wake field

decreased the steady-state transport zone and vortex streamwise transport rate. As a result

drag force coefficient increased with the increase in the width of the wake flow.

关键词

Keywords

references

LIU C, LI Y, MEI N. Study on the flow characteristics of low reynolds number flow over a bluff body[J]. China Science Technology Overview, 2013(19):157-158.(in Chinese) DOI:10.3969/j.issn.1671-2064.2013.19.104

GANGAPRASATH S, SUDHARSAN M, VINODH KUMAR V, et al. Effects of aspect ratio and orientation on the wake characteristics of low Reynolds number flow over a triangular prism[J]. Journal of Fluids and Structures, 2014, 46:59-76. DOI:10.1016/j.jfluidstructs.2013.12.008

BAO Y, ZHOU D, ZHAO Y J. A two-step Taylor-characteristic-based Galerkin method for incompressible flows and its application to flow over triangular cylinder with different incidence angles[J]. International Journal for Numerical Methods in Fluids, 2010, 62(11):1181-1208. DOI:10.1002/fld 2054

SRIKANTH S, DHIMAN A K, BIJJAM S. Confined flow and heat transfer across a triangular cylinder in a channel[J]. International Journal of Thermal Sciences, 2010, 49(11):2191-2200. DOI:10.1016/j.ijthermalsci.2010.06.010

ZEITOUN O, ALI M, NUHAIT A. Convective heat transfer around a triangular cylinder in an air cross flow[J]. International Journal of Thermal Sciences, 2011, 50(9):1685-1697. DOI:10.1016/j.ijthermalsci.2011.04.011

DE A K, DALAL A. Numerical study of laminar forced convection fluid flow and heat transfer from a triangular cylinder placed in a channel[J]. Journal of Heat Transfer, 2007, 129(5):646-656. DOI:10.1115/1.2712848

ABBASSI H, TURKI S, NASRALLAH S B. Numerical investigation of forced convection in a plane channel with a built-in triangular prism[J]. International Journal of Thermal Sciences, 2001, 40(7):649-658. DOI:10.1016/S1290-0729(01)01254-6

LU J Z, TAO J J, Low-Reynolds-number wake flows of a triangular prism[J]. Journal of Aerospace Power, 2016, 31(5):1226-1233.(in Chinese) DOI:10.13224/j.cnki.jasp.2016.05.026

IUNGO G V, BURESTI G. Experimental investigation on the aerodynamic loads and wake flow features of low aspect-ratio triangular prisms at different wind directions[J]. Journal of Fluids and Structures, 2009, 25(7):1119-1135. DOI:10.1016/j.jfluidstructs. 2009.06.004

SRIGRAROM S, KOH A K G. Flow field of self-excited rotationally oscillating equilateral triangular cylinder[J]. Journal of Fluids and Structures, 2008, 24(5):750-755. DOI:10.1016/j.jfluidstructs.2007.10.015

SU Y X, SHENG J. Flow measurement and testing[M]. China Metrology Publishing House, 2007, 87-103.(in Chinese)

JIN L, TAN Y H. Study on flameholders[J]. Journal of Rocket Propulsion, 2006, 32(1):30-34.(in Chinese)

LIU J S, ZOU H, LIU Z R, et al. Performance of vortex shedding behind a slotted circular cylinder with different angles of attack[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(1):128-135.(in Chinese) DOI:10.13700/j.bh.1001-5965.2016.0058

LIU Y, LIANG Z S, BAO F. Particle image velocimetry-a whole fields technology without disturbs the flow[J]. Chinese Science and Technology Information, 2010, 13(11):37-40.(in Chinese) DOI:10.3969/j.issn.1001-8972.2010.13.011

ROSHKO A. On the wake and drag of bluff bodies[J]. Journal of the Aeronautical Sciences, 1955, 22(2):124-132.

QU Y, WANG J, SUN M, et al. Wake vortex evolution of square cylinder with a slot synthetic jet positioned at the rear surface[J]. Journal of Fluid Mechanics, 2017, 812:940-965. DOI:10.1017/jfm.2016.833

CHEN M Z. Fundamentals of viscous fluid dynamics[M]. Higher Education Press, 2006:275-278.(in Chinese)

MA X, KARNIADAKIS G E, PARK H, et al. DPIV-driven flow simulation:a new computational paradigm[J]. Proceedings of the Royal Society A:Mathematical, Physical and Engineering Sciences, 2003, 459(2031):547-565. DOI:10.1098/rspa.2002.0981

VENTURI, DANIELE. On proper orthogonal decomposition of randomly perturbed fields with applications to flow past a cylinder and natural convection over a horizontal plate[J]. Journal of Fluid Mechanics, 2006, 559:215-254. DOI:10.1017/S0022112006000346

KONSTANTINIDIS E, BALABANI S, YIANNESKIS M. Bimodal vortex shedding in a perturbed cylinder wake[J]. Physics Fluids, 2007, 19(1):011701-011704. DOI:10.1063/1.2432152

JEONG J, HUSSAIN F. On the identification of a vortex[J]. Journal of Fluid Mechanics, 1995, 285(1):69-94. DOI:10.1017/S0022112095000462

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