EDN: NFAAHY
Authors & Affiliations
Darin N.A., Uvakin M.A., Petkevich I.G., Suslov M.V., Ryabov G.A., Nikolaev A.L., Bozrikov K.V.
OKB “GIDROPRESS”, Podolsk, Russia
Uvakin M.A. – Deputy Head of Department, Head of Group, Cand. Sci. (Phys.-Math.). Contact: 21, Ordzhonikidze st., Podolsk, Moscow Region, Russia, 142103. Tel.: +7 (4967) 65-26-25; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Petkevich I.G. – Deputy Head of Department, Head of Group, Cand. Sci. (Tech.).
Suslov M.V. – Leading Design Engineer.
Nikolaev A.L. – Leading Design Engineer.
Dar'in N.A. – Design Engineer 1st Category.
Ryabov G.A. – Design Engineer 1st Category.
Bozrikov K.V. – Design Engineer 2nd Category.
Abstract
The article presents the final part of a large research project on the possibility of including into the KORSAR/GP software package an option for calculating macro cross sections using pre-prepared polynomial representations. The relevance of the work is due to the increasing complexity of the models used for calculations and, as a consequence, the increasing resource intensity of the calculations performed. The approach under study allows to solve a significant practical problem: ensuring the continuity of the neutron-physical characteristics of the core when switching from one set of initial data to another which is extremely important when modeling maneuvering modes. Additionally, this approach allows to reduce the size of initial data and increase the speed of calculation modeling. The article examines an existing method for calculating the values of macro cross sections which is based on multidimensional linear interpolation, and compares it with the proposed polynomial approach. The article also describes a process that ensures the continuity of functional representations when the set of initial data changes. In the course of the work, the integration of a polynomial approximation model into KORSAR/GP code was carried out, which made it possible to make a series of cross verification calculations. The obtained results confirm the possibility of using a polynomial model for approximating macro cross sections as an alternative to the existing method of calculating.
Keywords
KORSAR/GP code, macro cross-section library, second-order polynomial, maneuvering mode
Article Text (PDF, in Russian)
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UDC 621.039.51
Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2026, no. 2, 2:6
