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对非能动安全冷却系统热工、水力机理进行了研究,着重对钢安全壳内外混合气体传热和流动模型、钢安全壳外表面液膜模型、非能动贮水箱模型以及紊流模型和辅射换热模型等进行了分析研究。并运用自主开发的PCCSAC-3D程序对先进堆冷段双端断裂大破口失水事故工况下的安全壳压力和温度进行了计算分析。
The thermal and hydraulic mechanisms of the passive safety cooling system are studied. The heat transfer and flow model of the mixed gas inside and outside the steel containment, the liquid film model of the outer surface of the steel containment, the model of the non-active reservoir, the turbulence model and the secondary radiation Heat transfer model were analyzed. The pressure and temperature of containment under the condition of double-end breakage and large-breakage loss of water in advanced heap section are calculated and analyzed by PCCSAC-3D program independently developed.