Analysis of the Force Characteristics of Two Tandem Cylinders by Internal Waves over Slope Topography

被引:0
作者
Wang, Yin [1 ,2 ]
Xiong, Xiahui [1 ]
Zhang, Chenhui [1 ]
Wang, Lingling [3 ]
Wu, Xiaobin [2 ]
Wang, Hua [4 ]
Liu, Zhi [2 ]
Wang, Chunling [5 ]
机构
[1] Nanchang Inst Technol, Sch Hydraul & Ecol Engn, Nanchang 330099, Peoples R China
[2] Jiangxi Acad Water Sci & Engn, Inst Disaster Prevent & Mitigat & Water Engn Safet, Nanchang 330029, Peoples R China
[3] Hohai Univ, Coll Water Conservancy & Hydropower Engn, Nanjing 210024, Peoples R China
[4] Hohai Univ, Coll Environm, Nanjing 210024, Peoples R China
[5] Taizhou Univ, Dept Civil Engn & Architecture, Taizhou 318000, Peoples R China
基金
中国国家自然科学基金; 中国博士后科学基金;
关键词
internal wave; slope terrain; two tandem cylinders; numerical simulation; force characteristics; SOLITARY WAVE; NUMERICAL-SIMULATION; CIRCULAR-CYLINDERS; FLOW INTERFERENCE; GENERATION; PROPAGATION; EVOLUTION; BREAKING; SOLITONS; SHELF;
D O I
10.3390/w15183259
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Large-amplitude internal waves (IWs) with strong lateral shear forces can cause destructive effects on marine engineering structures. In this study, a large eddy simulation (LES) method was employed to simulate the generation and propagation of IWs in a three-dimensional numerical wave tank, and the pressure distribution, flow field characteristics, and force behaviors of two tandem cylinders under the coupling effect of the IWs and slope terrain were studied. The influence mechanism of the normalized value of center-to-center spacing (L) and the diameter of the cylinder (D), i.e., (L/D), on the strength of the vortex disturbance between cylinders was studied by comparing the simulation results of two tandem cylinders with those of a single cylinder (SC) to further explore the mechanical response characteristics of the upstream cylinder (P-1) and downstream cylinder (P-2). The simulation results showed that the vortex interaction between cylinders is the critical factor that affects the forces acting on the cylinders. The strength of the vortex disturbance could be distinguished by the dimensionless critical center-to-center spacing between cylinders (L-c/D = 3.0). When L/D <= L-c/D, the vortex disturbance was severe, causing P-1 and P(2 )to experience significant horizontal positive forces and negative forces, respectively. In the case of L/D > L-c/D, the forces acting on both cylinders gradually returned to those on a single cylinder.
引用
收藏
页数:21
相关论文
共 32 条
  • [1] Strouhal numbers, forces and flow structures around two tandem cylinders of different diameters
    Alam, Md. Mahbub
    Zhou, Y.
    [J]. JOURNAL OF FLUIDS AND STRUCTURES, 2008, 24 (04) : 505 - 526
  • [2] The dynamics of breaking internal solitary waves on slopes
    Arthur, Robert S.
    Fringer, Oliver B.
    [J]. JOURNAL OF FLUID MECHANICS, 2014, 761 : 360 - 398
  • [3] Large eddy simulations of round free jets using explicit filtering with/without dynamic Smagorinsky model
    Bogey, Christophe
    Bailly, Christophe
    [J]. INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, 2006, 27 (04) : 603 - 610
  • [4] Forces and torques exerted by internal solitons in shear flows on cylindrical piles
    Cai, Shuqun
    Long, Xiaomin
    Wang, Shengan
    [J]. APPLIED OCEAN RESEARCH, 2008, 30 (01) : 72 - 77
  • [5] Chen CY, 2007, J MAR SCI TECH-TAIW, V15, P1
  • [6] Chen Y.X., 2008, MECH ENG, V11, P111
  • [7] Laboratory observations on internal solitary wave evolution on steep and inverse uniform slopes
    Chen, -Yuan Chen
    Hsu, John Rong-Chung
    Chen, Hsin-Hsun
    Kuo, Ching-Feng
    Cheng, Min-Hung
    [J]. OCEAN ENGINEERING, 2007, 34 (01) : 157 - 170
  • [8] [成司元 Cheng Siyuan], 2022, [海洋工程, The Ocean Engineering], V40, P123
  • [9] Statistics of Internal Tide Bores and Internal Solitary Waves Observed on the Inner Continental Shelf off Point Sal, California
    Colosi, John A.
    Kumar, Nirnimesh
    Suanda, Sutara H.
    Freismuth, Tucker M.
    Macmahan, Jamie H.
    [J]. JOURNAL OF PHYSICAL OCEANOGRAPHY, 2018, 48 (01) : 123 - 143
  • [10] A DYNAMIC SUBGRID-SCALE EDDY VISCOSITY MODEL
    GERMANO, M
    PIOMELLI, U
    MOIN, P
    CABOT, WH
    [J]. PHYSICS OF FLUIDS A-FLUID DYNAMICS, 1991, 3 (07): : 1760 - 1765