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METHOD FOR CALCULATING MODELING OF THE NUCLEAR REACTOR ACTIVE ZONE, METHOD FOR CALCULATING THE NUCLEAR REACTOR ACTIVE ZONE AND THE ACTIVE ZONE MODEL
METHOD FOR CALCULATING MODELING OF THE NUCLEAR REACTOR ACTIVE ZONE, METHOD FOR CALCULATING THE NUCLEAR REACTOR ACTIVE ZONE AND THE ACTIVE ZONE MODEL
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机译:核反应堆活动区建模的计算方法,核反应堆活动区的计算方法和活动区模型
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摘要
In a computer modeling method for the core of a nuclear reactor the core is divided into a plurality of primary grids in the form of coarse mesh cells. A sub-section of the core relating to at least one grid is assigned to that grid. The sub-section includes that grid and a buffer zone that surrounds the grid horizontally and contains at least the grid that lies immediately adjacent to the first grid. The sub-section is sub-divided into a plurality of secondary grids-fine mesh cells-that are smaller than the primary grids. In a first computing step, a model of the core is calculated using a nodal calculation method, based on a respective dataset that is assigned to each primary grid. In a second computing step, a respective second dataset is assigned to each secondary grid of a sub-section and a model is then calculated for the sub-section, based on the dataset and the flows on the border of the sub-section that have been calculated in the first computing step.
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