Influence of the main neutron absorbers poisons coupled to the Point Kinetics model by the Rosenbrock’s method

Author:

Schaun Natália BarrosORCID,Tumelero Fernanda,Petersen Claudio Zen

Abstract

In this work, the Neutron Point Kinetics equations are solved for six groups of delayed neutron precursors and different types of ramp reactivity, considering the temperature effects by the Rosenbrock’s method, to verify the methodology. Furthermore, the classical model is solved by inserting the effects of the main neutron poisons, considering constant reactivity for a group of precursors. The simulation consists of inserting a negative constant reactivity, simulating a reactor in its shutdown phase. Then, positive constant reactivity is inserted, simulating power resumption in a reactor already poisoned, to analyzing the final behavior of the neutron density. The simulation achieved its goal of simulating the behavior of the neutron poisons, so that the graphs make physical sense as expected. Therefore, it was found that the proposed method overcame the stiffness of the Neutron Point Kinetics model, and also solved a nonlinear problem by the inclusion of temperature and neutron poisons in the system.

Publisher

Sociedade Brasilieira de Protecao Radiologica - SBPR

Subject

General Medicine

Reference13 articles.

1. DUDERSTADT J. J.; HAMILTON, L. J. Nuclear Reactor Analysis, John Wiley & Sons, New York, 1976.

2. LAMARSH, J. R. Introduction to Nuclear Reactor Theory, New York: Wesley publishing company, 1966.

3. TASHAKOR, S.; JAHANFARNIA, G.; E HASHEMI-TILEHNOEE, M. Numerical solution of the point reactor kinetics equations with fuel burn-up and temperature feedback. Annals of Nuclear Energy, 2011, 3378, v. 37, p. 265-269.

4. SILVA, J. J. A. Cinética Pontual com Realimentação de Temperatura considerando um grupo de precursores de nêutrons atrasados. Dissertação de Mestrado — UFRGS, Porto Alegre/RS, 2011.

5. PETERSEN, C. Z.; DULLA, S.; VILHENA, M. T. B.; RAVETTO, P. An analytical solution of the point kinetics equations with time-variable reactivity by the decomposition method. Pro-gress in Nuclear Energy, 2011, v. 53, p. 1091-1094.

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3