This paper applies Lagrangian method to discuss the sudden starting of a floating hotly in deep water and the analytical'solutions are obtained. It is known from the numerical results that the disturbing domain ex...This paper applies Lagrangian method to discuss the sudden starting of a floating hotly in deep water and the analytical'solutions are obtained. It is known from the numerical results that the disturbing domain extends and the dynamic pressure also increases when the breadth of the floating body keeps constant and its depth increases.展开更多
The Thirty-Second Workshop on Water Waves and Floating Bodies was held in Dalian from April23-26,2017,and hosted by State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology（DUT）.IWWWF...The Thirty-Second Workshop on Water Waves and Floating Bodies was held in Dalian from April23-26,2017,and hosted by State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology（DUT）.IWWWFB2017 attracts over90 participants from 17 countries,in which 65participants from abroad.展开更多
The artificial ecological floating bed is widely used in rivers and lakes to repair and purify polluted water. However, the water flow pattern and the water level distribution are significantly changed by the floating...The artificial ecological floating bed is widely used in rivers and lakes to repair and purify polluted water. However, the water flow pattern and the water level distribution are significantly changed by the floating beds, and the influence on the water flow is different from that of aquatic plants. In this paper, based on the continuous porous media model, a moveable two-layer combination model is built to describe the floating bed. The influences of the floating beds on the water flow characteristics are studied by numerical simulations and experiments using an experimental water channel. The variations of the water level distribution are discussed under conditions of different flow velocities（ v= 0.1 m/s, 0.2 m/s, 0.30 m/s, 0.4 m/s）, floating bed coverage rates（20%, 40%, 60%） and arrangement positions away from the channel wall（ D= 0 m, 0.1 m, 0.2 m）. The results indicate that the flow velocity increases under the floating beds, and the water level rises significantly under high flow velocity conditions in the upstream region and the floating bed region. In addition, the average rising water level value（ARWLV） increases significantly with the increase of the floating bed coverage rate, and the arrangement position of floating beds in the river can also greatly influence the water level distribution under a high-flow velocity condition（v ？0.2 m /s）.展开更多
文摘This paper applies Lagrangian method to discuss the sudden starting of a floating hotly in deep water and the analytical'solutions are obtained. It is known from the numerical results that the disturbing domain extends and the dynamic pressure also increases when the breadth of the floating body keeps constant and its depth increases.
文摘The Thirty-Second Workshop on Water Waves and Floating Bodies was held in Dalian from April23-26,2017,and hosted by State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology（DUT）.IWWWFB2017 attracts over90 participants from 17 countries,in which 65participants from abroad.
基金supported by the Major Science and Technology Program for Water Pollution Control and Treatment(Grant No.2012ZX07101-008)the National Science Fund for Distinguished Young Scholars(Grant No.51225901)+1 种基金the Research Fund for Innovation Team of Ministry of Education(Grant No.IRT13061)the Jiangsu Province QingLan Project
文摘The artificial ecological floating bed is widely used in rivers and lakes to repair and purify polluted water. However, the water flow pattern and the water level distribution are significantly changed by the floating beds, and the influence on the water flow is different from that of aquatic plants. In this paper, based on the continuous porous media model, a moveable two-layer combination model is built to describe the floating bed. The influences of the floating beds on the water flow characteristics are studied by numerical simulations and experiments using an experimental water channel. The variations of the water level distribution are discussed under conditions of different flow velocities（ v= 0.1 m/s, 0.2 m/s, 0.30 m/s, 0.4 m/s）, floating bed coverage rates（20%, 40%, 60%） and arrangement positions away from the channel wall（ D= 0 m, 0.1 m, 0.2 m）. The results indicate that the flow velocity increases under the floating beds, and the water level rises significantly under high flow velocity conditions in the upstream region and the floating bed region. In addition, the average rising water level value（ARWLV） increases significantly with the increase of the floating bed coverage rate, and the arrangement position of floating beds in the river can also greatly influence the water level distribution under a high-flow velocity condition（v ？0.2 m /s）.
