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Unstructured grid and unstructured grid porous methods for numerical analysis of TACR moderator calandria

机译:非结构化网格和非结构化网格多孔方法的TACR减速器排量的数值分析

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In the design of the Thorium-based Advanced CANDU Reactor (TACR), the moderator system is used to remove the moderator heat in normal operations and to remove the residual heat in accidents. The numerical methods to analyze the heat transfer in the moderator calandria are required. In this paper, the moderator calandria is analyzed by using two types of numerical methods, an unstructured grid method and an unstructured grid porous method. Both methods use collocated unstructured grids and a new average filter method to eliminate the non-physical checkerboard pressure. The unstructured grid porous method introduces the porous method to consider the large tube bundles in the calandria. It is concluded that both methods are effective to analyze the thermal performance in the TACR calandria. Four different designs of the calandria are analyzed and are compared.
机译:在基于Thor的高级CANDU反应堆(TACR)的设计中,缓和器系统用于在正常操作中消除缓和器的热量,并在事故中消除残留的热量。需要使用数值方法来分析缓和加热器中的传热。本文采用两种数值方法来分析慢化器的排量,一种是非结构化网格方法,另一种是非结构化网格多孔方法。两种方法都使用并置的非结构化网格和新的平均滤波方法,以消除非物理棋盘格压力。非结构化网格多孔方法引入了多孔方法,以考虑到排管中的大管束。结论是,两种方法均有效地分析了TACR加热管中的热性能。分析并比较了四种不同的设计。

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