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Full-Text Articles in Engineering
Current-Induced Seabed Scour Around A Pile-Supported Horizontal-Axis Tidal Stream Turbine, Jisheng Zhang, Peng Gao, Jinhai Zheng, Xiuguang Wu, Yuxuan Peng, Tiantian Zhang
Current-Induced Seabed Scour Around A Pile-Supported Horizontal-Axis Tidal Stream Turbine, Jisheng Zhang, Peng Gao, Jinhai Zheng, Xiuguang Wu, Yuxuan Peng, Tiantian Zhang
Journal of Marine Science and Technology
Tidal stream energy has attracted more and more attentions of researchers and engineers of coastal studies in recent years, as it is renewable, predictable and environmentally friendly. Although many efforts have been made for the application of tidal stream energy, the scouring process in the vicinity of a pile-supported tidal stream turbine remains unclear. This study develops a mathematical model, consisting of hydrodynamic module, General Moving Object (GMO) module and sediment scour module, to numerically investigate the fluidstructure interaction and its induced sediment scour process around such a combined structure. Only a steady current is considered in the model, and …
A Numerical Study Of Liquid Tank And Structure Interaction, Bang-Fuh Chen, Shih-Ming Huang
A Numerical Study Of Liquid Tank And Structure Interaction, Bang-Fuh Chen, Shih-Ming Huang
Journal of Marine Science and Technology
A time-independent finite difference method was used to solve for a fully nonlinear sloshing fluid in a tank mounted on a structure. The interaction between the sloshing fluid and the dynamic response of the structure was investigated. The dynamic response of the structure was calculated using the fourth-order Runge-Kutta method, and the numerical model was extensively validated through comprehensive data comparisons. The tank was tuned to an appropriate depth to length ratio and was used as a tuned liquid damper. Several cases, including large and small structures, were studied. In addition, a vibration control analysis of the tank-structure system in …
Machine Vibration Induced Underwater Acoustic Radiation, Wei-Hui Wang, Jia-Horng Liou, Robert Sutton, Ben Dobson
Machine Vibration Induced Underwater Acoustic Radiation, Wei-Hui Wang, Jia-Horng Liou, Robert Sutton, Ben Dobson
Journal of Marine Science and Technology
A coupled FEM/BEM for solving fluid-structure interaction problem in structure-borne noise propagation and underwater acoustic radiation is present in this paper. In order to improve the habitability and stealth low noise condition is required in various types of ships. One of the dominant components is the radiated airborne and underwater noise caused by ship hull vibration. Accordingly, the estimation of structure-borne sound characteristics of a ship is important in the design of a quieter ship-structure. The hull vibration response and pressure distribution on the wetted surface of a ship subjected to excitation sources can be analyzed by utilizing the developed …