核电厂冷却水及含放射性液态流出物的三维数值模拟
发布时间：2018-08-25 20:23
【摘要】：建立河道三维水流和冷却水及含放射性液态流出物三维数学模型,对某滨河核电厂冷却水排放及含放射性液态流出物核素分布进行数值模拟研究,分析厂址排水口附近的温度场和浓度场的扩散规律。研究结果表明:方程中考虑排放口的流量动量,可合理反映扩散管周边的流态;厂址独特的河弯水力特性,使得不同扩散管布置对排放物质的稀释结果影响不大;各方案0.1℃温升线均未超过河道宽度的1/4,影响范围枯水期最大、洪水期最小,温升分布在排水口附近不均匀,但越往下游越均匀;下泄流量越大对核素的稀释作用越大,各方案稀释1 000倍时的影响长度均在3.5km左右;核素排放对上游影响很小,最大回溯距离不超过200m。这些结论可为工程设计、建设及运行提供技术服务,也对内陆核电环境问题的相关研究具有参考价值。
[Abstract]:Three-dimensional mathematical model of river channel flow, cooling water and radioactive liquid effluent was established to simulate cooling water discharge and nuclide distribution of radioactive liquid effluent in a riverside nuclear power plant. The diffusion law of temperature field and concentration field near the drainage outlet is analyzed. The results show that considering the flux and momentum of the discharge outlet, the flow state around the diffusion pipe can be reasonably reflected in the equation, and the unique river bend hydraulic characteristics of the plant site make the different layout of the diffusive pipe have little effect on the dilution results of the discharge material. The temperature rise line of 0.1 鈩，
本文编号：2203998
[Abstract]:Three-dimensional mathematical model of river channel flow, cooling water and radioactive liquid effluent was established to simulate cooling water discharge and nuclide distribution of radioactive liquid effluent in a riverside nuclear power plant. The diffusion law of temperature field and concentration field near the drainage outlet is analyzed. The results show that considering the flux and momentum of the discharge outlet, the flow state around the diffusion pipe can be reasonably reflected in the equation, and the unique river bend hydraulic characteristics of the plant site make the different layout of the diffusive pipe have little effect on the dilution results of the discharge material. The temperature rise line of 0.1 鈩，
本文编号：2203998
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