The Analysis Of The Influence Of The Sediment On The Power Plant Water Intake-outlet And Cooling Water Environment

Power plant cooling waters are usually rivers, ocean waters and reservoirs. Due tothat natural waters are often associated with sediment transport and deposition, therefore,sediment in the water around the plant constantly silts over time. Sediment accumulationcauses water culvert pipe blockage and water temperature rise, which will lead to areduction in cooling effect of power plant cooling system. Research on the subject is ofgreat significance.This article studied the water intake-outlet problems of power plant under thesediment environment and focused on the influence of different ways of water intake anddrainage layout on the cooling water and environment under sediment environment. Inresponse to these problems, the basic theoretical principles of power plant water intakeand drainage project layout, basic principle of sediment transport, and basic knowledgeof tidal current are firstly stated. Secondly, by using Fluent, the computational fluiddynamics numerical software, a reasonable three-dimensional mathematical model ofwater intake-outlet environment of a power plant built along the river without effectionof tidal and a reasonable three-dimensional mathematical model of water intake-outletenvironment of a power plant built along the coastal effected by tidal are established.Then by means of Chinese maritime service network and BLM-Shipping Software,related Tidal was monitored. Mathematical simulation in this paper was verified and gotthe same law of the tidal flow with the actual movement. By the Fluent, all three majorways of water intake-outlet, differential method, march-past method and eclipsed form,are simulated under different extent of sediment deposition in rivers, tide, tidal currentconditions separately. The temperature distribution of water intake and drainage and thedistribution of sediment volume fraction under different project layout are obtained. Theresults of numerical simulation was compared and analyzed, which could provide areference to safe operation of power plant in sandy environment.