通过AER基准问题验证VVER-1000全核稳态COMSOL多物理场

Q4 Energy

International Journal of Nuclear Energy Science and Technology Pub Date : 2018-08-27 DOI:10.1504/IJNEST.2018.10015407

Ned Xoubi, A. Y. Soliman

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引用次数: 2

摘要

在这项工作中，使用舒尔茨基准的规范，开发了VVER-1000反应堆堆芯的全堆芯、三维、多组模型。本文提出了一种新的三维全堆芯解决方案，并通过预测系统临界度、功率分布和中子通量分布来模拟VVER-1000反应堆的中子行为。将多组常数应用于COMSOL模型，以使用具有自适应网格细化的有限元方法进行中子学计算。研究发现，计算出的有效乘数（keff）与参考值比较良好。此外，裂变率三维功率分布和轴向平均二维功率分布与报道的参考结果非常一致。本文还用COMSOL模型计算了热中子能谱。这项研究使我们能够验证VVER型反应堆的COMSOL计算方案，并将我们的解决方案与稳态下的参考解决方案进行比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Validating COMSOL multiphysics for VVER-1000 whole-core-steady-state via AER benchmark problem

In this work, a full core, three-dimensional, multi-group model of VVER-1000 reactor core is developed using specifications of the Schulz benchmark. This paper presents a new 3-D full core solution, and simulates the neutronic behaviour of the VVER-1000 reactor by predicting the system criticality, power distribution, and the neutron flux distribution. Multi-group constants are applied to the COMSOL model to perform neutronics calculations using finite element method with adaptive mesh refinement. The study found that the calculated effective multiplication factor (keff) compares well with the reference value. Furthermore, the fission rates 3D power distributions and axially averaged 2D power distribution are in good agreements with reported reference results. The thermal neutron spectrum is also calculated by the COMSOL model as presented in this paper. This study allows us to validate the COMSOL calculation schemes for VVER-type reactors and to compare our solutions with reference solutions at steady state.

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来源期刊

International Journal of Nuclear Energy Science and Technology Energy-Nuclear Energy and Engineering

CiteScore

0.80

自引率

0.00%

发文量

期刊介绍： Today, nuclear reactors generate nearly one quarter of the electricity in nations representing two thirds of humanity, and other nuclear applications are integral to many aspects of the world economy. Nuclear fission remains an important option for meeting energy requirements and maintaining a balanced worldwide energy policy; with major countries expanding nuclear energy"s role and new countries poised to introduce it, the key issue is not whether the use of nuclear technology will grow worldwide, even if public opinion concerning safety, the economics of nuclear power, and waste disposal issues adversely affect the general acceptance of nuclear power, but whether it will grow fast enough to make a decisive contribution to the global imperative of sustainable development.