Space-Dependent Nuclear Reactor Transient Analyses by Multiple Temporal-Mode Transformation

Abstract

<p> A multiple temporal-mode transformation is applied to the finite difference form of the space-dependent reactor kinetics equations with the aim of reducing the truncation error. The transformation method is incorporated into an existing alternaing-direction explicit code and is tested on three homogeneous problems in one and two dimenisions as well as on a one-dimensional space-dependent CANDU-type problem. The numerical results have confirmed some characteristics of this solution formalism with respect to accuracy and stability. In addition, this study has identified some areas for improvement to the multiple temporal-mode trans-· formation technique. </p>