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The article analyses and predicts the hydrodynamic feature of study area on the basis of mike21 numerical model. It is by the two dimensions pollution diffused simulation method based on the hydrodynamic model. And then it predicts the contributed concentration field of the waste water. Based on the NH3-N in discharge of sewage, it contrasts the impact on water quality in the Yangtze River of the...
This paper presents a numerical method to simulate the 2D tidal flow and water quality under the orthogonal curvilinear coordinates. In order to overcome the computational difficulties in natural rivers, such as the complicated boundary figures, the great disparity between length and width of computational domain, etc., orthogonal boundary-fitted grid is used, the irregular domain in physical plane...
Chongqing city locates at the foothill, where the Jialing River and the Yangtze River joins. A severely high temperature and drought occurred in the summer of 2006. So, it has been very necessary and urgent to know the affection trend and extent of the urban heat island to high temperature in urban during that period. The temperature data measured at automatic weather stations was used to statistic...
The polluted water discharged into natural water body is one of the most important factors that contaminate water quality. Generally, there are many pollution sources in a reach of a river. According to the polluted water discharge feature, water pollution sources are divided into two types of continuous and discontinuous. For the continuous, the certain method is used to determine its amount of pollutant...
Yangtze River is the biggest river in China, the quantity of freshwater flowing in ocean is very huge. And it is middling tidal estuary that is affected by tidal current obviously. This area is a very complex system, which has three-order branches and four outlets to the East Sea. The estuary is influenced by tide and freshwater, And saltwater intrusion is complex either. Therefore, studying on the...
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