The reactor dynamics code DYN3D and its trigonal-geometry nodal diffusion model

被引：11

作者：

Duerigen, S. ^{[1
]}

Rohde, U. ^{[1
]}

Bilodid, Y. ^{[1
]}

Mittag, S. ^{[1
]}

机构：

[1] Helmholtz Zentrum Dresden Rossendorf, D-01328 Dresden, Germany

来源：

KERNTECHNIK | 2013年 / 78卷 / 04期

关键词：

FUNCTION EXPANSION; VERIFICATION; IMPLEMENTATION; SYSTEM; CORE; PWR;

D O I：

10.3139/124.110382

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The reactor dynamics code DYN3D is a three-dimensional best-estimate tool for simulating steady states and transients of light-water reactors and innovative reactor designs. An overview of the DYN3D features is provided. This paper further focuses on the recently developed trigonal-geometry diffusion model DYN3D-TRIDIF including a description of the underlying nodal approach and the characteristics of trigonal geometries. Via a mesh refinement study by means of a VVER-1000-type core benchmark using a fine-mesh diffusion reference solution, DYN3D-TRIDIF shows spatial convergence. Furthermore, the performance of DYN3D-TRIDIF is verified by means of a single-assembly problem on pin-cell level. Good agreement between DYN3D-TRIDIF and the detailed-geometry transport reference is achieved with an average deviation in power of less than 1 %.

引用

页码：310 / 318

页数：9

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