| Cooling water system is one of the important parts of the fire and nuclear power plant. Power plants by the sea always use seawater as source to cool the equipments, then discharge it into the sea. How to arrange the intake and outlet projects, which must be considered when building and rebuilding the power plant, so as to take low-temperature water, and ensure waste heat can be dissipated fully into water, so as to decrease the influence to environment.Numerical simulation and physical model are effective means to analyze the diffuse and transfer rule of warm water in acceptance water, which can simulate the velocity and temperature field, analyze the heat affected area, time and intensity, to optimize the taking and discharging disposal. In this paper, Combined with Kemen power station, the hydraulic and thermal characteristic in full tide near the power station have been studied by numerical simulation and physical model systemically. The main contents include:1. Looking up more literature, understand the research methods of physical model and numerical simulation in cooling water engineering. Search the relative problems of physical model further. 2. Analyze the similar principle of hydraulic and thermal characteristic, as well as the simulation outline in cooling water's physical model in tidal area.3. Adoptting hybrid methed of fractional steps, carry out numerical simulation of tidal flow near the engineering, and validate it with observations, provide informations for controlling water boundary in physical model.4. Using full tide distort physical model, simulate hydraulic and thermal characteristic to the water near Kemen power station, validate to tidal level and flow of typical tide, the tidal level in model is according better with observations, the velocity and direction are consistent with observations basically.5. Simulate searwater's temperature field near the power station using physical model. Provide the largest thermal fields, the average thermal fields and intaking thermal progress in spring tide and neap for the second period's intaking schemes.6. Studing the hydraulic and thermal characteristic in cooling water, numerical simulation and physical model can reinforce each other, which is more rationalization. So it has more academic meanings and higher application values. |
