Numerical simulation of tidal current near the artificial island sea area

2014 ◽  
pp. 247-252
Keyword(s):  
Numerical Simulation ◽  
Tidal Current ◽  
Sea Area

Numerical Simulation of Tidal Current and Sediment for the Secondary Diaoliang Reclamation in Zhoushan

2014 ◽  
Vol 501-504 ◽  
pp. 2120-2123
Author(s):  
Hui Qin Wu ◽  
Jia Xiang Hu ◽  
Xi Shan Pan
Keyword(s):  
Numerical Simulation ◽  
Tidal Current ◽  
Measured Data ◽  
Annual Change ◽  
Erosion And Deposition ◽  
Local Current ◽  
The Mean ◽  
Sea Area ◽  
The Impact ◽  
Sediment Model

Based on the 2-D tidal current and sediment model, the field of tidal current near the sea of the secondary Diaoliang reclamation in Zhoushan was simulated due to the construction of the southern dike. After the simulation , the result was varified by the measured data .The impact on the surrounding sea and the annual change in erosion and deposition after the project was analyzed. The results show that the local current velocity in the eastern side of Luomen sea area features obviously decrease because of the reclamation project.The deposition is presented in the Diaoliang bay with the mean siltation intensity of around 0.8m/a, as well as about 1.1m/a of Luomen wharf apron .

Research on Applied Technology and Tidal Current Control with Numerical Simulation of Pulandian Bay

2014 ◽  
Vol 886 ◽  
pp. 281-284 ◽  
Author(s):  
Hao Chen ◽  
Fu Li Chen ◽  
Yong Ying Zhu ◽  
Li Ming Zhu
Keyword(s):  
Numerical Simulation ◽  
Tidal Current ◽  
Flow Model ◽  
Scientific Basis ◽  
Current Control ◽  
Liaoning Province ◽  
Current Field ◽  
Urban Core ◽  
Applied Technology ◽  
Sea Area

As the new urban core area and the center of Dalian, Pulandian Bay shoulder the mission of the coastal economic growth in Liaoning province. In view of the present urgent pollution situation in the coastal waters , the MIKE 21 Flow Model is used to build the two-dimensional tidal current field and replay the basic situation and the trend of variation of the bay. Model validation results show that the calculated values agree well with the measurement values, and the model can reflect the tidal current field of Pulandian Bay accurately. The numerical simulation results provide the scientific basis and basic data for the sea area construction and environmental protection.

scholarly journals Tidal Current Energy Resource Distribution in Korea

Energies ◽  
2019 ◽  
Vol 12 (22) ◽  
pp. 4380 ◽  
Author(s):  
Su-jin Hwang ◽  
Chul H. Jo
Keyword(s):  
Numerical Simulation ◽  
Observational Data ◽  
Tidal Current ◽  
Resource Assessment ◽  
Coastal Areas ◽  
Energy Resources ◽  
Development Plan ◽  
The West ◽  
Tidal Current Energy ◽  
Current Energy

Korea is a very well-known country for having abundant tidal current energy resources. There are many attractive coastal areas for the tidal current power that have very strong currents due to the high tidal range and the acceleration through the narrow channels between islands in the west and south coasts of the Korean peninsula. Recently, the Korean government announced a plan that aims to increase the portion of electricity generated from renewable energy to 20% by 2030. Korea has abundant tidal current energy resources; however, as reliable resource assessment results of tidal current energy are not sufficient, the portion of tidal current power is very small in the plan. Therefore, a reliable resource assessment should be conducted in order to provide a basis for the development plan. This paper describes the resource assessment of tidal current energy in Korea based on the observational data provided by KHOA (Korean Hydrographic and Oceanographic Agency) and numerical simulation of water circulation. As the observational data were unable to present the detailed distribution of the complicated tidal current between islands, numerical simulation of water circulation was used to describe the detailed distribution of tidal current in Incheon-Gyeonggi and Jeollanam-do, where the tidal energy potentials are abundant. The west and south coastal areas of Korea were divided into seven regions according to the administrative district, and the theoretical tidal current potential was calculated using average power intercepted. The results of this research can provide the insight of the tidal current energy development plan in Korea.

Numerical Simulation of Maximum Scour Depth of the Riverbed above a Subway Tunnel Crossing the Tidal River

2012 ◽  
Vol 256-259 ◽  
pp. 2548-2551 ◽  
Author(s):  
Jun Chen ◽  
Ai Feng Huang ◽  
Hong Chen ◽  
Yong Tao Li
Keyword(s):  
Numerical Simulation ◽  
Cross Section ◽  
Return Period ◽  
Tidal Current ◽  
Tidal River ◽  
Scour Depth ◽  
Two Dimensional ◽  
Subway Tunnel ◽  
Sediment Transportation ◽  
Hydrologic Condition

To ensure the secure buried depth of the subway tunnel which was routed underneath the Fenghuahe River, a two-dimensional tidal current and sediment transportation model was established to simulate the maximum scour depth of the riverbed. The conclusions were shown as follows: the most disadvantageous hydrologic condition was a combination of the 200-year return period flood in the Fenghuahe River and the 5-year highest tide in the Yonghe River. The maximum scour depth of the riverbed above the subway tunnel was 1.19 m and the lowest elevation of the riverbed cross-section was -8.56m. The results could provide technical support for the safety of subway design.

Effect on Marine Ecological Environment of COD Emission of Wastewater

2013 ◽  
Vol 779-780 ◽  
pp. 1365-1368
Author(s):  
Ying Wang ◽  
Chun Ma ◽  
Guang Yu Zhang ◽  
Nan Xu
Keyword(s):  
Numerical Simulation ◽  
Water Quality ◽  
Marine Pollution ◽  
Water Quality Model ◽  
Ecological Environment ◽  
Quality Model ◽  
Simulation Research ◽  
Pollution Problem ◽  
Sea Area

The paper uses the research means of numerical simulation for marine pollution problem of the ocean dumps from offshore industries, which is concerned by the coastal countries; it adopts ECOM Water Quality Model. It has carried out the simulation research on those projects influence on the environment of sea area. By taking COD of wastewater as the research object, the paper confirmed the influence range of COD emission on marine ecological environment.

Numerical simulation of tidal current around Keelung Sill off Northern Taiwan

2010 ◽  
Author(s):  
Hsien-Wen Li ◽  
Yao-Tsai Lo ◽  
Cheng-Han Tsai ◽  
Nan-Jung Kuo ◽  
Chung-Ru Ho ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Tidal Current ◽  
Northern Taiwan

scholarly journals 3-D Simulation of Vertical-Axial Tidal Current Turbine

2016 ◽  
Vol 23 (4) ◽  
pp. 73-83 ◽  
Author(s):  
Zhang Zhiyang ◽  
Ma Yong ◽  
Jiang Jin ◽  
Liu Weixing ◽  
Ma Qingwei
Keyword(s):  
Numerical Simulation ◽  
Tidal Current ◽  
Simple Structure ◽  
Hydrodynamic Performance ◽  
Control Technique ◽  
Fluid Field ◽  
Improve Accuracy ◽  
Tidal Current Turbine ◽  
Current Turbine ◽  
Dynamics Method

Abstract Vertical-axial tidal current turbine is the key for the energy converter, which has the advantages of simple structure, adaptability to flow and uncomplex convection device. It has become the hot point for research and application recently. At present, the study on the hydrodynamic performance of vertical-axial tidal current turbine is almost on 2-D numerical simulation, without the consideration of 3-D effect. CFD (Computational Fluid Dynamics) method and blade optimal control technique are used to improve accuracy in the prediction of tidal current turbine hydrodynamic performance. Numerical simulation of vertical-axial tidal current turbine is validated. Fixed and variable deflection angle turbine are comparatively studied to analysis the influence of 3-D effect and the character of fluid field and pressure field. The method, put the plate on the end of blade, of reduce the energy loss caused by 3-D effect is proposed. The 3-D CFD numerical model of vertical-axial tidal current turbine hydrodynamic performance in this study may provide theoretical, methodical and technical reference for the optimal design of turbine.

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