Experimental Study Of Flow Characteristics Of Salinity Intrusion And The Influence On The Heated Discharge Of Power Plant In Fresh And Salt Water Mixing

The estuary waters nearly under certain conditions will appear in varying degrees layered phenomenon, The sea water under the surface of fresh water along the river promote to upstream. Showing a wedge-shaped , this phenomenon direct impact on the city's industrial water.With the development of electric power needs, many of the fire / nuclear power plants locate in the estuary region. The use of surface cooling will emission greater waste heat into the water environment. In the waters ,flow motion law will be impacted by layered salt and fresh in different degree. The research is of great academic value and industrial application.Through physical model testing, study on saltwater wedge motion law in fresh and salt water mixing area. Combined with the cooling circulation water engineering by power station and its arrangement of surfer discharge and deep intake, this paper analysis the layered of salt and fresh water impact on heated discharge. Key elements include:(1) Looking up a lot of literature, documentation available, the intersection of fresh water to salt water of a more comprehensive understanding of the physical model test through further exploration.(2) Completed model of the design, processing and equipment installation and commissioning work. Test salinity and temperature distribution changes with various upstream flow, depth and initial salinity changes. Access to large numbers of measured data.(3) On a constant flow of fresh water under the intersection of salt water salinity and the distribution of upstream freshwater runoff and downstream water depth and salinity of sea water of mutual relations, testing the salinity of the distribution of saline at various combinations. Analysis of the saline intrusion of the changes in law.(4) Analysis the Impact of heat dilution, transform and temperature distribution with Salinity gradients.(5) The results showed that layered degree of salt and fresh water increases with the nitial salinity or the water depth increases, decreases with the freshwater runoff increases. At the same time, buoyancy effect caused by cold and hot water density weakened in some degree due to increased depth of the drip, so hot water layer may appear at the bottom.