Numerical Analysis of Effects of Wave, Current and Free Surface on Hydrodynamics of Sea-crossing Bridge and Tunnel Prefab Elements
ZHANG Yongtao1，FU Huiping2，YANG Yanhua1
(1. Key Laboratory of Largespan Bridge Construction Technology of Ministry of Communications, Wuhan 430040, China; 2. School of Naval Architecture, Ocean and Civil Engineering,Shanghai Jiaotong University, Shanghai 200240, China)
In order to improve the computation efficiency of floating transportation drag of the caisson and immersed canal either in static water or in current and waves, a few CFD methods such as the double model method, VOF method including steady and unsteady methods, and numerical wave generation method were studied based on general CFD codes StarCCM+ and FLUENT and further development of FLUENT, which were used to discuss the effects of wave, current, free surface and inflow angle on the floating transportation drag. It is shown that for immersed canal in static water, the free surface can be neglected, while for caisson it cannot; for caisson with inner concavity, unsteady VOF method is necessary since steady method can conceal the sloshing of inner fluid due to the initial velocity.
张永涛1，傅慧萍2，杨炎华1. 波流及自由面对跨海桥隧预制结构水动力性能影响的数值分析[J]. 上海交通大学学报（自然版）, .
ZHANG Yongtao1，FU Huiping2，YANG Yanhua1. Numerical Analysis of Effects of Wave, Current and Free Surface on Hydrodynamics of Sea-crossing Bridge and Tunnel Prefab Elements. J. Shanghai Jiaotong Univ.(Sci.) , 2013, 47(10): 1525-1531.
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