State Key Laboratory of Hydrology Water Resource and Hydraulic Engineering

Nanjing, China

State Key Laboratory of Hydrology Water Resource and Hydraulic Engineering

Nanjing, China
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He J.,Nanjing Hydraulic Research Institute | He J.,State Key Laboratory of Hydrology Water Resource and Hydraulic Engineering | Shi L.P.,North China University of Water Conservancy and Electric Power | Sun Y.J.,Hydrology bureau of Zhejiang Province
Applied Mechanics and Materials | Year: 2014

Yamen channel is the important sea-route from Yinzhou Lake to Gaolan harbor in Zhuhai city through Huangmaohai Sea. Based on the recent hydrologic data and the seabed change, the numerical model is validated, and some advanced dredging plan for Yamen channel is simulated in the movement of tidal current and sediment, and the number of the sediment silting in channel is calculated. The result shows that there are some preponderance for the east channel in the tidal current and sediment, and the sediment is filling up in the mouth bars mostly. Moreover, the east channel has the potential to improve the channel standard, which can be developed firstly in the common condition. © (2014) Trans Tech Publications, Switzerland.


Ji H.,Hohai University | Han L.,State Key Laboratory of Hydrology Water Resource and Hydraulic Engineering
5th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2011 | Year: 2011

There has no matching water quality model reported in literature so far, although the hydraulic model of plain river network has been established by utilizing the celldividing method in the past decades. The feasibility and efficiency of the cell-dividing method used to solve water quality variables is demonstrated in this paper. A novel combined-cell water quality model based on cell-dividing method is proposed and applied to stimulating the water quality of Nantong river network of China, with results, showing the efficiency and accuracy of the proposed method. © 2011 IEEE.


Wang H.,State Key Laboratory of Hydrology Water Resource and Hydraulic Engineering | Liu G.,Hohai University
Journal of Digital Information Management | Year: 2012

Emergency management of sudden disasters needs a quick and efficient decision made by a group. The authors propose a visual discussion technique in group decision making of sudden disasters and construct the main technique process based on visualization theory. Based on this, Through the key techniques are researched and implemented. As for Multiagents in the discussion, they can obtain more accurate cognition of current sudden disaster situation and form efficient emergency predetermined plan by discussion and analysis in the short time.


He J.,Nanjing Hydraulic Research Institute | He J.,State Key Laboratory of Hydrology Water Resource and Hydraulic Engineering | Zhao X.S.,Hydrology Bureau of Yellow River Conservancy Commission
Applied Mechanics and Materials | Year: 2013

In order to show the calculated results from numerical model of tidal current easily, the Mapinfo software may be help for the graphics display as its outstanding function, and its relation database also storages and manages the mass data from numerical model expediently. GIS technology would be applied by a square cell in map, and the combined application is discussed in the stage of modeling, computation and demonstration, including the original data in AutoCad document, computed data in numerical mode and graphic data in the table sheet of Mapinfo software. This method is tested in Shizi Yang channel, and the model results can be shown and inquired, which can improve the efficiency of mathematic model in modeling, debugging and after-managing. © (2013) Trans Tech Publications, Switzerland.


He J.,Nanjing Hydraulic Research Institute | He J.,State Key Laboratory of Hydrology Water Resource and Hydraulic Engineering | Zhao X.,Hydrology Bureau of Yellow River Conservancy Commission | Liu H.,Hydrology Bureau of Yellow River Conservancy Commission
Applied Mechanics and Materials | Year: 2012

The diffusion motion is one of the important items in the shallow water equations, and it is a crucial factor for the stability to simulate the shallow water flow in the numerical model. In this paper, a 2D model for the simulation of shallow water flow by convection and diffusion over variable bottom is presented, which is based on the FVM (finite volume method) over triangular unstructured grids. The format of Reo's approximate Riemann is adopted to solve the flux terms. And the bed slope source term is treated by split in the form of the flux eigenvector. For the diffusion terms, the divergence theorem is employed to obtain the derivatives of a scalar variable on each triangular cell. Then, the flow around a pillar is simulated, which flow pattern is similar with the actual flow. Thus it is proved that the model could be applied to simulate the complicated current structure in the water area around hydraulic construction. © (2012) Trans Tech Publications, Switzerland.


He J.,Nanjing Hydraulic Research Institute | He J.,State Key Laboratory of Hydrology Water Resource and Hydraulic Engineering | Sun Y.J.,Hydrology bureau of Zhejiang Province | Zhao X.S.,Hydrology Bureau of Yellow River Conservancy Commission
Applied Mechanics and Materials | Year: 2014

In this paper, a 2D model for the simulation of shallow water flow by convection and diffusion over variable bottom is presented, which is based on the FVM (finite volume method) over triangular unstructured grids. The format of Reo's approximate Riemann is adopted to solve the flux terms. And the bed slope source term is treated by split in the form of the flux eigenvector. For the diffusion terms, the divergence theorem is employed to obtain the derivatives of a scalar variable on each triangular cell. The numerical model is adopted to simulate the hydrodynamic impact from HZM (Hongkong-Zhuhai-Macao) bridge on Pearl River estuary. The simulated results show that the HZM bridge has little influence on the distribution of hydrodynamic environment in the Pearl River estuary. © (2014) Trans Tech Publications, Switzerland.


He J.,Nanjing Hydraulic Research Institute | He J.,State Key Laboratory of Hydrology Water Resource and Hydraulic Engineering | Zhao X.,Hydrology Bureau of Yellow River Conservancy Commission | Zhu Y.,Hydrology Bureau of Yellow River Conservancy Commission
Applied Mechanics and Materials | Year: 2012

Taizhou Bay is an estuary with high tidel range, middle tidal current and low sediment concentration. For the sea floor is very dense, it is stable in the usual water regimen. The numerical model is introduced to simulate the suspended sediment transport in Taizhou Bay. And the recent hydrologic data and the seabed change have been validated by the numerical model. The movement of tidal current and sediment in Dagagn Bay are simulated, and the sediment siltation in port designed is calculated by the model. The results show that the sediment source is from the shoal produced by the ebb current, and the sediment silting is decreased two-thirds by the cofferdam back of the bay, because the way of the suspended sediment is stopped by the cofferdam from the shoal to the harbor. © (2012) Trans Tech Publications, Switzerland.


He J.,Nanjing Hydraulic Research Institute | He J.,State Key Laboratory of Hydrology Water Resource and Hydraulic Engineering | Xin W.J.,Nanjing Hydraulic Research Institute
Applied Mechanics and Materials | Year: 2013

For the large coastal harbor with one entrance attacked badly from the waves and sands from the sea, it is advantaged to break waves and produce sands, but not advantaged for the water exchange flux, especially when a point source appearing inside the harbor, the polluted water is difficult to flow into the sea in time and be diluted by the water from outside. The water flow in estuary presents the character of to-and-fro flow, and the polluted source will flow into harbor with the flood tide and pollute the harbor secondly, although it has been outside the harbor at least with the ebb tide. For the harbor with one entrance against waves, the polluted source will be more difficult to be transported to the outside when waves coming, and the water environment capacitance will decline rapidly for the polluted water not to be absorbed. It is Taizhou Wenling harbor for example in Zhejiang province, and the movement of water particle is simulated in tidal current and wave to describe the movement of the point source transported not diffused. The rusults show that the capacity of water exchange for the large harbor wih one entrance will be declined in both tidal current and wave. © (2013) Trans Tech Publications, Switzerland.


He J.,Nanjing Hydraulic Research Institute | He J.,State Key Laboratory of Hydrology Water Resource and Hydraulic Engineering | Xin W.J.,Nanjing Hydraulic Research Institute
Applied Mechanics and Materials | Year: 2014

The HZM (Hongkong-Zhuhai-Macao) bridge connects Hongkong, Zhuhai and Macao district, and it strctchs across the Pearl River estuary. A lot of piers and three large artifical islands would have some impact on the hydrodynamic environment in the Pear River estuary. In this paper, a 2D tidal current numerical model is introduced to simulate the hydrodynamic impact from the HZM brdige. The simulated results show that the Hydrodynamic influence is concentrated on the 5.0 km range from downstream to upstream nearby the navigation zone and the 1.0 km range of bridge site in not-navigation zone, and the tidal range reduction is limited 0.03m and the tidal prism reduction is not more than 1% in the Lingding Sea after the HZM bridge constructed. Therefore, the HZM bridge has little influence on the distribution of hydrodynamic environment in the Pearl River estuary. © (2014) Trans Tech Publications, Switzerland.


Yan G.,Nanjing Hydraulic Research Institute | Yan G.,State Key Laboratory of Hydrology Water Resource and Hydraulic Engineering
Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis | Year: 2013

The paper discusses the self-induced vibration problem, and provides some projects in which that the water seal comes about the self-induced vibration results in the strong vibration of gate. the paper also analyses the cause of self-induced vibration, and proposes the method and measure controlling and avoiding the self-induced vibration of gate.

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