Simulation of two-point reactor kinetics model of reflected reactors with Newtonian reactivity feedback

Maleki B. R., TOMBAKOĞLU M., Goluoglu S.

ANNALS OF NUCLEAR ENERGY, vol.177, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 177
  • Publication Date: 2022
  • Doi Number: 10.1016/j.anucene.2022.109315
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, Compendex, Environment Index, INSPEC, Metadex, Pollution Abstracts, Civil Engineering Abstracts
  • Keywords: Dynamic Monte Carlo, Point kinetics model, Neutron population, Stochastic differential equations, INHOUR EQUATION
  • Hacettepe University Affiliated: Yes


In this study, a non-analog dynamic Monte Carlo method, named Point Kinetics Monte Carlo (PKMC), is developed to solve the one-and two-point reactor kinetic equations for a reflected reactor with six group of delayed neutron precursors with Newtonian reactivity feedback. Dynamic weight window technique is implemented to control neutron and precursor population during the simulation. Moreover, the Stochastic differential equations for Two-Point Reactor Kinetics Model (STPRKM) is developed to deter-mine neutron and precursor population as a function of time. Since, the random fluctuations in the pop-ulation dynamics carry very often as much information as the mean value, during the derivation of STPRKM, physical nature of the model problem and inherent probabilistic mechanisms are not altered. Using the developed methods, time dependent transient problems of reflected reactors are studied and mean responses and standard deviations determined by these methods are compared with each other and available deterministic results.(c) 2022 Elsevier Ltd. All rights reserved.