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采用CFD(Computational Fluid Dynamics)模拟广东某核电站海风环境,分析风荷载对其影响,论证该核电站常规岛的安全性。并采用离散相模型对风致氯离子进行数值模拟,分析氯离子的运动轨迹,为该核电站常规岛混凝土进行氯离子含量取样提供指导,分析附着的氯离子对该核电站常规岛的影响,探究核电站常规岛主厂房和安全壳的耐久性。研究表明该核电站在极限风荷载作用下是安全的;通过对氯离子的含量和结构混凝土的渗透性等取样调查分析,得出在超过其使用年限100年内安全壳和常规岛主厂房外层钢筋处的氯离子浓度将不超过0.04%,低于钢筋锈蚀的“门槛值”。
The CFD (Computational Fluid Dynamics) was used to simulate the sea breeze environment of a nuclear power plant in Guangdong. The influence of wind load on it was analyzed to demonstrate the safety of the conventional island of the NPP. The discrete phase model was used to simulate wind-induced chloride ion. The movement trajectory of chloride ion was analyzed. The chloride ion content of conventional island concrete in this NPP was sampled to provide guidance. The influence of attached chloride ion on the conventional island of the NPP was analyzed. Durability of the main plant and containment. The study shows that the NPP is safe under the action of the extreme wind load. According to the sample survey and analysis of the chloride ion content and the permeability of the concrete, it is concluded that the outer reinforcement of the containment and the conventional island main plant over the service life of 100 years Chloride ion concentration will not exceed 0.04%, lower than the “threshold” steel corrosion.