Application of a 3D Discrete Ordinates Program in Heating Rate Calculation for CAP1400 Nuclear Power Plant Internals
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摘要: 采用三维离散纵标(SN)方法程序TORT计算了CAP1400核电厂堆内构件发热率,并将计算结果与蒙特卡罗(MC)方法程序MCNP以及两维SN方法程序DORT计算结果进行比较。在针对反应堆模型进行屏蔽设计时,需求解固定源问题,应用西屋公司开发的SORCERY程序将pin by pin堆芯功率分布转换为三维源分布。由于CAP1400反应堆模型较大,固定源的制作会消耗大量的计算机硬件资源,同时也会超出SORCERY程序本身的计算规模限制,为此开发了外源制作辅助程序PSOR,使TORT程序适用于CAP1400等大规模工程问题的计算。Abstract: The heating rate of CAP1400 reactor internals is calculated with 3D discrete coordinate（SN） program（TORT）, and the results are compared and verified with the results of MCNP and DORT. The problem solved in the reactor shielding design is fixed-source problem, SORCERY（developed by the Westinghouse company） is used to transfer the core power distribution（pin by pin） to 3D source distribution. Because of the large CAP1400 reactor model, a great deal of computer resources will be expended in the production of 3D fixed source, and the limit of array dimensions in SORCERY will be exceeded, so, another auxiliary program PSOR is developed. And TORT could be used in the CAP1400 large scale problem.
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