MINOS:: A simplified Pn solver for core calculation

被引：32

作者：

Baudron, Anne-Marie ^{[1
]}

Lautard, Jean-Jacques ^{[1
]}

机构：

[1] CEA Saclay, Commissariat Energie Atom, DEN, DANS,SERMA,LENR,DM2S, F-91191 Gif Sur Yvette, France

来源：

NUCLEAR SCIENCE AND ENGINEERING | 2007年 / 155卷 / 02期

关键词：

D O I：

10.13182/NSE07-A2660

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：

This paper describes a new generation of the neutronic core solver MINOS resulting from developments done in the DESCARTES project. For performance reasons, the numerical method of the existing MINOS solver in the SAPHYR system has been reused in the new system. It is based on the mixed-dual finite element approximation of the simplified transport equation. We have extended the previous method to the treatment of unstructured geometries composed by quadrilaterals, allowing us to treat geometries where fuel pins are exactly represented. For Cartesian geometries, the solver takes into account assembly discontinuity coefficients in the simplified P-n context. The solver has been rewritten in C + + programming language using an object-oriented design. Its general architecture was reconsidered in order to improve its capability of evolution and its maintainability. Moreover, the performance of the previous version has been improved mainly regarding the matrix construction time; this result improves significantly the performance of the solver in the context of industrial application requiring thermal-hydraulic feedback and depletion calculations.

引用

页码：250 / 263

页数：14

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