CLC number: U661.32
On-line Access: 2015-12-04
Received: 2015-01-20
Revision Accepted: 2015-08-22
Crosschecked: 2015-11-27
Cited: 0
Clicked: 4702
Chao-bang Yao, Wen-cai Dong. Modeling of fluid resonance in-between two floating structures in close proximity[J]. Journal of Zhejiang University Science A, 2015, 16(12): 987-1000.
@article{title="Modeling of fluid resonance in-between two floating structures in close proximity",
author="Chao-bang Yao, Wen-cai Dong",
journal="Journal of Zhejiang University Science A",
volume="16",
number="12",
pages="987-1000",
year="2015",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1500017"
}
%0 Journal Article
%T Modeling of fluid resonance in-between two floating structures in close proximity
%A Chao-bang Yao
%A Wen-cai Dong
%J Journal of Zhejiang University SCIENCE A
%V 16
%N 12
%P 987-1000
%@ 1673-565X
%D 2015
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1500017
TY - JOUR
T1 - Modeling of fluid resonance in-between two floating structures in close proximity
A1 - Chao-bang Yao
A1 - Wen-cai Dong
J0 - Journal of Zhejiang University Science A
VL - 16
IS - 12
SP - 987
EP - 1000
%@ 1673-565X
Y1 - 2015
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1500017
Abstract: In this study, we conducted numerical simulations of fluid resonance in-between two floating structures based on potential theory assessing the effect of fluid viscosity by including the artificial damping force. The numerical results of two adjacent Barges systems and Barge & Wigley systems were compared with experimental data of those of the viscous fluid model based on Reynolds average Navier-Stokes equations (RANSE). It can be observed that the conventional potential flow model (without artificial damping force) significantly over-estimated the wave height and forces around the resonant frequencies. Results of the present method with an appropriate damping coefficient supported the available data, confirming the importance of the viscous damping effect on strong hydrodynamic interaction between the floating structures. Furthermore, influences of lateral clearances, wave heading angles, and ships’ motions on the wave surface elevations were analyzed. Validation and application of methods to estimate the fluid resonant frequencies and modes were also conducted. Generally speaking, Molin’s simplified theory can give an accurate estimation of resonant frequencies and serve as a practical tool to analyze the fluid resonant phenomena of gaps in-between a two Barge system and Wigley & Barge system in close proximity.
The problem presented in the paper is an important issue for the hydrodynamics between two floating structures, which has been studied over 30 years, either by 2D or 3D theory, with or without speed.
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