Experimental and numerical study of wave-current interactions with a dumbbell-shaped bridge cofferdam

被引：21

作者：

Kang, Azhen ^{[1
]}

Zhu, Bing ^{[1
]}

Lin, Pengzhi ^{[2
]}

Ju, Jiannwen ^{[3
]}

Zhang, Jiawei ^{[1
]}

Zhang, Dongming ^{[4
]}

机构：

[1] Southwest Jiaotong Univ, Sch Civil Engn, Chengdu 610031, Peoples R China

[2] Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Sichuan, Peoples R China

[3] Univ Calif Los Angeles, Dept Civil & Environm Engn, Los Angeles, CA USA

[4] Chengdu Univ, Dept Civil & Environm Engn, Chengdu 610106, Peoples R China

来源：

OCEAN ENGINEERING | 2020年 / 210卷

基金：

中国国家自然科学基金;

关键词：

Morison equation; Dumbbell-shaped cylinder; Wave and current force; Drag and inertia coefficients; Wave flume experiment; 2ND-ORDER DIFFRACTION; VERTICAL CYLINDER; GRAVITY CAGE; FORCES; SIMULATION; BODY;

D O I：

10.1016/j.oceaneng.2020.107433

中图分类号：

U6 [水路运输]; P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

Recently, a new structure type of a vertical truncated dumbbell-shaped cylinder has been widely used in bridge cofferdams in many sea-crossing bridges in China. Wave-only and wave-current interactions with this new structure type are studied experimentally and numerically. The modified Morison equation is applied to derive the drag coefficients CD and inertia coefficients CM. The influence of the incident flow directions, current velocity, static wave height and wave periods on the hydrodynamic coefficients is explored. The study shows that the hydrodynamic coefficients are strongly correlated with the sine values of the incident flow directions. In addition, a 3D numerical model using a multilayer s-coordinate model and an immersed boundary method based on the Navier-Stokes equations (Kang et al., 2015) is established. Based on the validated numerical model, flow patterns around the structure, including the free surface and 3D vorticity distributions, are analyzed numerically. The results presented herein provide important guidance to better understand the hydrodynamic performance of this new structure type.

引用

页数：19

共 40 条

[11] THE EQUIVALENT UNIFORM CURRENT IN WAVE-CURRENT COMPUTATIONS [J].

HEDGES, TS ;

LEE, BW .

COASTAL ENGINEERING, 1992, 16 (03) :301-311

[12]

Iwagaki Y., 1984, Coastal Engineering, P2857, DOI DOI 10.1061/9780872624382.192

[13] Wave-current interaction with a vertical square cylinder at different Reynolds numbers [J].

Kang A. ;

Zhu B. .

Journal of Modern Transportation, 2013, 21 (1) :47-57

[14] Numerical simulation of wave interaction with vertical circular cylinders of different submergences using immersed boundary method [J].

Kang, Azhen ;

Lin, Pengzhi ;

Lee, Yi Jiat ;

Zhu, Bing .

COMPUTERS & FLUIDS, 2015, 106 :41-53

[15] Fully nonlinear interactions of waves with a three-dimensional body in uniform currents [J].

Kim, MH ;

Celebi, MS ;

Kim, DJ .

APPLIED OCEAN RESEARCH, 1998, 20 (05) :309-321

[16] Numerical simulation of wave and current interaction with a fixed offshore substructure [J].

Kim, Sung-Yong ;

Kim, Kyung-Mi ;

Park, Jong-Chun ;

Jeon, Gyu-Mok ;

Chun, Ho-Hwan .

INTERNATIONAL JOURNAL OF NAVAL ARCHITECTURE AND OCEAN ENGINEERING, 2016, 8 (02) :188-197

[17] New analytical solutions to water wave diffraction by vertical truncated cylinders [J].

Li, Ai-jun ;

Liu, Yong .

INTERNATIONAL JOURNAL OF NAVAL ARCHITECTURE AND OCEAN ENGINEERING, 2019, 11 (02) :952-969

[18]

Li Y.C., 1990, WAVE ACTION MARITIME, P274

[19] A multiple-layer σ-coordinate model for simulation of wave-structure interaction [J].

Lin, PZ .

COMPUTERS & FLUIDS, 2006, 35 (02) :147-167

[20] Wave-current interaction with a vertical square cylinder [J].

Lin, PZ ;

Li, CW .

OCEAN ENGINEERING, 2003, 30 (07) :855-876

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