1.School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China; 2.Hebei Provincial Innovation Center for Wind Engineering and Wind Energy Technology,Shijiazhuang 050043,China; 3.State Key Lab of Mechanical Behavior and System Safety of Transportation Engineering Structures,Shijiazhuang Tiedao University,Shijiazhuang 050043,China
Abstract:To investigate the mean aerodynamic force characteristics of two rectangular cylinders arranged inline, the mean drag coefficients and the mean lift coefficients of the two rectangular cylinders with a width-to-height ratio of 1:4 were tested and analyzed by rigid model pressure measurement wind tunnel tests at various incidence angles and different spacing ratios. The test results were compared with those of a single one. In addition, the interference mechanism of the mean aerodynamic force coefficients of the two rectangular cylinders arranged inline was further revealed by analyzing the mean wind pressure distribution. The incidence angle α varies from 0° to 90° and the spacing ratio P/B (the ratio of the center-to-center distance of the two rectangular cylinders to the breadth of the cylinders) ranges from 1.2 to 8.0. The results show that the mean drag coefficients of the two rectangular cylinders can be divided into two categories: 0°≤α≤30° and 30°<α≤90°. The mean lift coefficients of the upstream rectangular cylinder can be classified into 0°≤α≤75° and 75°<α≤90°, and that of the downstream rectangular cylinder can be diversified into 0°≤α≤20° and 20°<α≤90°. The amplifying effect of the mean aerodynamic force coefficients is mainly reflected in the upstream rectangular cylinder, where the maximum mean drag coefficient is 1.5 times that of a single rectangular cylinder and the maximum mean lift coefficient is 2.1 times that of a single one.
姜会民1,杨群1,2,3,范佳豪1,刘小兵1,2,3. 线形布置双矩形柱的平均气动力特性试验研究[J]. 振动与冲击, 2024, 43(5): 20-30.
JIANG Huimin1,YANG Qun1,2,3,FAN Jiahao1,LIU Xiaobing1,2,3. Test study on average aerodynamic force characteristics of linearly arranged two rectangular cylinders. JOURNAL OF VIBRATION AND SHOCK, 2024, 43(5): 20-30.
[1] ALAM M M, MORIYA M, TAKAI K, et al. Suppression of fluid forces acting on two square prisms in a tandem arrangement by passive control of flow[J]. Journal of Fluids and Structures, 2002, 16(8): 1073-1092. [2] 郑德乾, 祝瑜哲, 马文勇, 等. 上游切角倒角小间距比串列方柱大涡模拟研究[J]. 振动与冲击, 2022, 41(7): 37-45+61. ZHENG Deqian, ZHU Yuzhe, MA Wenyong, et al. Large eddy simulation for small spacing ratio tandem two square cylinders with upstream column corner cutting and chamfering[J]. Journal of Vibration and Shock, 2022, 41(7): 37-45+61. [3] LIU C H, CHEN J M. Observations of hysteresis in flow around two square cylinders in a tandem arrangement[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2002, 90(9): 1019-1050. [4] 杜晓庆, 陈丽萍, 董浩天, 等. 串列双方柱的风压特性及其流场机理[J]. 湖南大学学报(自然科学版), 2021, 48(03): 109-118. DU Xiaoqing, CHEN Liping, DONG Haotian, et al. Wind Pressure characteristics and flow mechanism of two tandem square columns[J]. Journal of Hunan University(Natural Sciences), 2021, 48(03): 109-118. [5] 樊晓羽, 秦浩, 商敬淼, 等. 串列双方柱干扰效应流动机理研究[J]. 振动与冲击, 2020, 39(8): 230-238+244. FAN Xiaoyu, QIN Hao, SHANG Jingmiao, et al. Flow mechanism investigation on interference effect of two square cylinders in tandem arrangement[J]. Journal of Vibration and Shock, 2020, 39(8): 230-238+244. [6] 杨青, 曹曙阳, 刘十一. 基于浸入式边界方法的串联双矩形柱绕流数值模拟[J]. 物理学报, 2014, 63(21): 237-246. YANG Qing, CAO Shuyang, LIU Shiyi. Numerical simulation of tandem two rectangular cylinder orbit based on immersion boundary method[J]. Acta Physica Sinica, 2014, 63(21): 237-246. [7] HUANG Z, XI G, ZHANG W. Numerical simulation of spacing effects on the flow past two 2:1 rectangular cylinders in tandem at Re=200[C]// Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2012, 44755: 1007-1015. [8] ZHANG W, YANG H, DOU H S, et al. Forced convection of flow past two tandem rectangular cylinders in a channel[J]. Numerical Heat Transfer, Part A: Applications, 2017, 72(1): 89-106. [9] 杨乐天, 顾志福, 赵学军. 绕经长宽比为0.5的串列双矩形柱体流动形态研究[C]// 第八届全国实验流体力学学术会议论文集. 广州: 中国力学学会, 2010: 161-167. YANG Letian, GU Zhifu, ZHAO Xuejun. Flow patterns identifications around two tandem rectangular cylinders with aspect ratio 0.5. [C]// The 8th National Conference on Experimental Fluid Dynamics. Guangzhou: The Chinese Society of Theoretical and Applied Mechanics, 2010: 161-167. [10] ALAM M M, ZHOU Y, WANG X W. The wake of two side-by-side square cylinders[J]. Journal of Fluid Mechanics, 2011, 669: 432-471. [11] INOUE O, IWAKAMI W, HATAKEYAMA N. Aeolian tones radiated from flow past two square cylinders in a side-by-side arrangement[J]. Physics of Fluids, 2006, 18: 046104. [12] KONDO N. Numerical simulation of aerodynamic characteristics of two rectangular cylinders in side-by-side arrangement[J]. International Journal of Computational Fluid Dynamics, 2004, 18(5): 367-379. [13] 郑宇华, 顾杰. 两并列矩形柱绕流的PIV试验研究[J]. 应用力学学报, 2018, 35(3): 465-471+682. ZHENG Yuhua, GU Jie. PIV experimental study on flow around two parallelized rectangular columns[J]. Chinese Journal of Applied Mechanics, 2018, 35(3): 465-471+682. [14] LEE S J, MUN G S, PARK Y G, et al. A numerical study on fluid flow around two side-by-side rectangular cylinders with different arrangements[J]. Journal of Mechanical Science and Technology, 2019, 33: 3289-3300. [15] YIN G, MONACI T, ONG M C. Numerical simulation of flow around two 5:1 rectangular cylinders at a high Reynolds Number[C]// IOP Conference Series: Materials Science and Engineering. IOP Publishing, 2019, 700(1): 012010. [16] DU X, XU H, MA W, et al. Experimental study on aerodynamic characteristics of two square cylinders at various incidence angles[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2019, 191: 154-169. [17] 杜晓庆, 许庆, 董浩天, 等. 全风向角下小间距双方柱绕流的大涡模拟[J]. 同济大学学报(自然科学版), 2022, 50(06):776-783. DU Xiaoqing, XU Qing, DONG Haotian, et al. Large eddy simulation of small spacing cylinders around the flow under full wind angle[J]. Journal of Tongji University (Natural Science Edition), 2022, 50(06):776-783. [18] 刘小兵, 姜会民, 吴倩云, 等. 风向角对线形布置双方柱斯托罗哈数影响的试验研究[J]. 建筑结构学报, 2022, 43(12): 11-19. LIU Xiaobing, JIANG Huimin, WU Qianyun, et al. Experimental study on effects of wind direction angle on Strouhal number of two square cylinders arranged in line[J]. Journal of Building Structures, 2022, 43(12): 11-19. [19] 杨群, 吴倩云, 姜会民, 等. 不同风向角下线形布置双方柱脉动气动力特性研究[J]. 振动与冲击, 2021, 40(13): 159-166+192. YANG Qun, WU Qianyun, JIANG Huimin, et al. Study on pulsating aerodynamic characteristics of linear arrangement of cylinders under different wind angles[J]. Journal of Vibration and Shock, 2021, 40(13): 159-166+192. [20] SHIMADA K, ISHIHARA T. Application of a modified k–ε model to the prediction of aerodynamic characteristics of rectangular cross-section cylinders[J]. Journal of fluids and structures, 2002, 16(4): 465-485. [21] YU D, BUTLER K, KAREEM A, et al. Simulation of the influence of aspect ratio on the aerodynamics of rectangular prisms[J]. Journal of Engineering Mechanics, 2013, 139(4): 429-438. [22] NAKAGUCHI H. An experimental study on aerodynamic drag of rectangular cylinders[J]. Journal of the Japan Society for Aeronautical and Space Sciences, 1968, 16: 1-5. [23] YU D, KAREEM A. Parametric study of flow around rectangular prisms using LES[J]. Journal of Wind Engineering and Industrial Aerodynamics, 1998, 77: 653-662. [24] 杜晓庆, 林伟群, 代钦. 矩形柱体气动性能的流场机理研究[J]. 西安建筑科技大学学报(自然科学版), 2019, 51(01): 51-58. DU Xiaoqing, LIN Weiqun, DAI Qin. Study on flow field mechanism of aerodynamic performance of rectangular cylinder[J]. Journal of Xi'an University of Architecture and Technology (Natural Science Edition), 2019, 51(01): 51-58. [25] 杨群, 吴倩云, 姜会民, 等. 线形布置双方柱平均气动力特性试验研究[J]. 振动.测试与诊断, 2021, 41(03): 503-510+621. YANG Qun, WU Qianyun, JIANG Huimin, et al. Experimental study on mean aerodynamic characteristics of linear arrangement of two cylinders[J]. Vibration. Testing and Diagnostics, 2021, 41(3): 503-510+621. [26] Alam M M, Sakamoto H, Zhou Y. Determination of flow configurations and fluid forces acting on two staggered circular cylinders of equal diameter in cross-flow[J]. Journal of Fluids and Structures, 2005, 21(4): 363-394.