固体颗粒对半球扰动尾迹影响的实验研究

张艳涛; 孙姣; 高天达; 范赢; 陈文义

doi:10.6052/0459-1879-19-353

固体颗粒对半球扰动尾迹影响的实验研究

doi: 10.6052/0459-1879-19-353

张艳涛^*,,
孙姣^*,,
高天达^*,,
范赢^*,,
陈文义^*,,2), ,

^*河北工业大学过程装备与控制工程系, 天津 300130
^†河北工业大学工程流动与过程强化研究中心, 天津 300130

基金项目: 1)国家自然科学基金资助项目(11572357, 11602077)

详细信息

通讯作者:
2)陈文义, 教授, 主要研究方向: 实验流体力学. E-mail: cwy63@126.com

中图分类号: O357.5⁺2
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- 被引次数: 0
出版历程
- 收稿日期: 2019-12-13
- 刊出日期: 2020-06-10

EXPERIMENTAL INVESTIGATION ON THE EFFECT OF PARTICLES ON THE WAKE OF HEMISPHERIC DISTURBANCE

Zhang Yantao^*,,
Sun Jiao^*,,
Gao Ti^*,,
a^*,,
Fan Ying^{*,,2)
, ,}

^*Department of Process Equipment and Control Engineering, Hebei University of Technology, Tianjin 300130, China
^†Research Center of Engineering Fluid and Process Enhancement, Hebei University of Technology, Tianjin 300130, China

摘要

摘要: 采用粒子图像测速技术(particle image velocimetry, PIV)研究固体颗粒对放置在平板层流边界层中半球粗糙元尾迹的影响. 实验采集了清水和加入粒径为140 $\mu$m, 220 $\mu$m, 350$\mu$m聚苯乙烯固体颗粒4种工况下二维速度场信息, 基于半球半径的雷诺数为994 ($Re_R=RU/\upsilon$), 固体颗粒的体积浓度为$3.0\times10^{-5}$. 对比清水和两相工况下的平均速度剖面、湍流强度等宏观统计量, 分析固体颗粒对半球尾迹流动宏观特性的影响. 分别利用沿流向不同位置的流向脉动速度的二维空间相关系数和法向脉动速度的功率谱密度函数分析颗粒对尾迹结构演化过程及尾迹结构脱落频率的影响. 结果发现: 与清水相比, 回流区随颗粒粒径增大而逐渐增大; 颗粒使湍流强度增大, 回流区的存在导致在半球后流向位置$2R$前后区域湍流强度呈现不同变化趋势; 颗粒使尾迹结构的流向尺度减小并且随着颗粒粒径的增大先减小后增大; 在尾迹结构运动过程中颗粒的存在促进了尾迹结构的周期性加速和减速运动, 促进作用随着颗粒粒径的增大先增强后减弱; 颗粒的存在促进了尾迹结构的脱落, 脱落频率随颗粒粒径的增大先增大后减小.
- 两相流 /
- 半球粗糙元 /
- 粒子图像测速 /
- 相关系数 /
- 脱落频率
Abstract: Particle image velocimetry (PIV) was used to investigate the effect of solid particles on the wake structure of an isolated hemispherical roughness element placed in a laminar boundary layer of a flat plate. The two-dimensional velocity field information for four operating conditions of single phase and addition of 140 $\mu$m, 200 $\mu$m and 350 $\mu$m polystyrene particles was experimentally collected. The Reynolds number based on hemisphere radius was 994 ($Re_R=RU/\upsilon$). The volume concentration of particles was $3.0\times10^{-5}$. The turbulence statistics such as average velocity profile, comprehensive turbulence intensity and reflux area size under clean water and two-phase conditions are compared to analyze the influence of solid particles on macro characteristics of hemispherical wake flow. The two-dimensional spatial correlation coefficient and power spectral density function of pulsating velocity along the flow direction at different positions along the flow direction are respectively used to analyze the effect of solid particles on the evolution process of wake structure and the shedding frequency of wake structure. The results show that: compared with clear water, the reflux zone gradually increases with the increase of solid particle size; The presence of solid particles increases the comprehensive turbulence intensity and due to the existence of the backflow region, the turbulence intensity in the region before and after the hemispheric backward flow direction position $2R$ presents different changing trends The presence of solid particles reduces the flow direction dimension of the wake structure and the flow direction dimension firstly decreases and then increases with the increase of particle size The presence of solid particles in the wake structure promotes the periodic acceleration and deceleration of the wake structure, and the promotion effect increases first and then decreases with the increase of solid particle size. The presence of solid particles promotes the shedding of wake structure, and the shedding frequency of wake structure increases first and then decreases with the increase of particle size.
- two-phase flow /
- hemispherical rough element /
- PIV /
- correlation analysis /
- frequency of shedding

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参考文献(33)

白静, 方红卫, 何国建等. 细颗粒泥沙净冲刷和输移的大涡模拟研究. 力学学报, 2017, 49(1): 65-74
(Bai Jing, Fang Hongwei, He Guojian, et al.Numerical simulation of erosion and transport of fine sediments by large eddy simulation. Chinese Journal of Theoretical and Applied Mechanics, 2017, 49(1): 65-74 (in Chinese))

张培杰, 林建忠. 非牛顿流体固粒悬浮流的若干问题. 力学学报, 2017, 49(3): 543-549
(Zhang Peijie, Lin Jianzhong.Review of some researches on suspension of solid particle in non-Newtonian fluid. Chinese Journal of Theoretical and Applied Mechanics, 2017, 49(3): 543-549 (in Chinese))

陈荣前, 聂德明. 椭圆颗粒在剪切流中旋转特性的数值研究. 力学学报, 2017, 49(2): 257-267
(Chen Rongqian, Nie Deming.Numerical study on the rotation of an elliptical particle in shear flow. Chinese Journal of Theoretical and Applied Mechanics, 2017, 49(2): 257-267 (in Chinese))

刘俊, 高福平. 近壁面柱体涡激振动的迟滞效应. 力学学报, 2019, 51(6): 1630-1640
(Liu Jun, Gao Fuping. Hysteresis in vortex-induced vibrations of a near-wall cylinder. Chinese Journal of Theoretical and Applied Mechanics, 2019, 51(6): 1630-1640 (in Chinese))

涂佳黄, 谭潇玲, 邓旭辉等. 平面剪切来流作用下串列布置三圆柱流致运动特性研究. 力学学报, 2019, 51(3): 787-802
(Tu Jiahuang, Tan Xiaoling, Deng Xuhui, et al.Study of flow-induced motion characteristics of three tandem circular cylinders in planar shear flow. Chinese Journal of Theoretical and Applied Mechanics, 2019, 51(3): 787-802 (in Chinese))

王帅杰, 崔晓通, 白建侠等. 减阻工况下壁面周期扰动对湍流边界层多尺度的影响. 力学学报, 2019, 51(3): 767-774
(Wang Shuaijie, Cui Xiaotong, Bai Jianxia, et al.The effect of periodic perturbation on multi scales in a turbulent boundary layer flow under drag reduction. Chinese Journal of Theoretical and Applied Mechanics, 2019, 51(3): 767-774 (in Chinese))

Jacobs W.Flow behind a single roughness element. Ingenieur-Archiv, 1938, 7(36): 343-355

Klebanoff P, Tidstrom K, Sargent LM.The three-dimensional nature of boundary-layer instability. Journal of Fluid Mechanics, 1961, 12: 1-34

Savory E, Toy N.The separated shear layers associated with hemispherical bodies in turbulent boundary layers. Journal of Wind Engineering & Industrial Aerodynamics, 1988, 28(1-3): 291-300

Mochizuki M.Smoke observation on boundary layer transition caused by a spherical roughness element. Journal of the Physical Society of Japan, 1961, 16(5): 995-1008

Hall GR.Interaction of the wake from bluff bodies with an initially laminar boundary layer. AIAA Journal, 1967, 5(8): 1386-1392

Theodorsen T."The structure of turbulence". Inst. for Fluid Dynamics and Applied Mathematics, Univ. of Maryland, TR, College Park, MD, 1954

Acarlar MS, Smith CR.A study of hairpin vortices in a laminar boundary layer. Part 1. Hairpin vortices generated by a hemisphere protuberance. Journal of Fluid Mechanics, 1987, 175: 1-41

Baker C.The laminar horseshoe vortex. Journal of Fluid Mechanics, 1979, 95(2): 347-367

Savory E, Toy N.The separated shear layers associated with hemispherical bodies in turbulent boundary layers. Journal of Wind Engineering and Industrial Aerodynamics, 1988, 28: 291-300

Kawanisi K, Maghrebi MF, Yokosi S.An instantaneous 3-D analysis of turbulent flow in the wake of a hemisphere. Boundary-Layer Meteorology, 1993, 64(1-2): 1-14

Tirtey SC, Chazot O, Walpot L.Characterization of hypersonic roughness-induced boundary-layer transition. Experiments in Fluids, 2011, 50(2): 407-418

Ye QQ, Schrijer FFJ, Scarano F, et al.Geometry effect of isolated roughness on boundary layer transition investigated by tomographic PIV. International Journal of Heat and Fluid Flow, 2016, 61: 31-44

Carr IA, Plesniak MW.Three-dimensional flow separation over a surface-mounted hemisphere in pulsatile flow. Experiments in Fluids, 2016, 57: 9

Zhou Z, Wang Z, Fan J.Direct numerical simulation of the transit -ional boundary-layer flow induced by an isolated hemispherical roughness element. Computer Methods in Applied Mechanics and Engineering, 2010, 199(23-24): 1573-1582

Tufo HM, Fischer PF, Papka ME, et al.Hairpin vortex formation, a case study for unsteady visualization. Office of Scientific & Technical Information Technical Reports, 1999

Yager EM, Kirchner JW, Dietrich WE.Calculating bed load transport in steep boulder bed channels. Water Resources Research, 2007, 43(7): 1-24

Sadeque MA, Rajaratnam N, Loewen MR.Effects of bed roughness on flow around bed-mounted cylinders in open channels. Journal of Engineering Mechanics, 2009, 135(2): 100-110

Lacey RWJ, Rennie CD.Laboratory investigation of turbulent flow structure around a bed-mounted cube at multiple flow stages. Journal of Hydraulic Engineering, 2012, 138: 71-84

Shuen JS, Solomon ASP, Faeth GM, et al.Structure of particle-laden jets-measurements and predictions. AIAA Journal, 1985, 23(3): 396-404

Li D, Luo K, Fan J.Particle statistics in a two-way coupled turbulent boundary layer flow over a flat plate. Powder Technology, 2017, 305: 250-259

Zhou Y, Xue Z, Wu X, et al.Experimental investigation of the particle distribution of gas-solid turbulent flow in the boundary layer. Powder Technology, 2017, 307: 119-128

Hardalupas Y, Taylor AMK, Whitelaw JH.Velocity and particle-flux characteristics of turbulent particle-laden jets. Proc. R, Soc. London, 1989, 426(1870): 31-78

Kaftori D, Hetsroni G, Banerjee S.Particle behavior in the turbulent boundary layer. II. Velocity and distribution profiles. Physics of Fluids, 1995, 7(5): 1107-1121

Li J, Wang H, Liu Z, et al.An experimental study on turbulence modification in the near-wall boundary layer of a dilute gas-particle channel flow. Experiments in Fluids, 2012, 53(5): 1385-1403

van Hou R. Time-resolved PIV measurements of the interaction of polystyrene beads with near-wall-coherent structures in a turbulent channel flow. International Journal of Multiphase Flow, 2011, 37(4): 346-357

Sun J, Gao T, Fan Y, et al.The modulation of particles on coherent structure of turbulent boundary layer in dilute liquid-solid two-phase flow with PIV. Powder Technology, 2018, 344(2019): 883-896

高天达, 孙姣, 范赢等. 基于PIV 技术分析颗粒在湍流边界层中的行为. 力学学报, 2019, 51(1): 103-110
(Gao Tianda, Sun Jiao, Fan Ying, et al.PIV experimental investigation on the behavior of particle in the turbulent boundary layer. Chinese Journal of Theoretical and Applied Mechanics, 219, 51(1): 103-110 (in Chinese))

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