THE SURFACE HARMONICS METHOD IN ONE-DIMENSIONAL TEST TASKS WITH ASYMMETRICAL CELLS

Authors & Affiliations

Elshin A.V., Pakhomov A.D., Riuchin V.V.
Institute of Nuclear Power Engineering (branch) of Peter the Great Saint-Petersburg Polytechnic University, Sosnovy Bor, Russia

Elshin A.V. – Dr. Sci. (Tech.), Senior Research Fellow, Head of Department, Institute of Nuclear Power Engineering (branch) of Peter the Great Saint-Petersburg Polytechnic University. Contacts: 41, Solnechnaya st., Sosnovy Bor, Leningrad region, Russia, 188542. Tel:. (921)438-48-55; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Pakhomov A.D. – student, Institute of Nuclear Power Engineering (branch) of Peter the Great Saint-Petersburg Polytechnic University.
Riuchin V.V. – student, Institute of Nuclear Power Engineering (branch) of Peter the Great Saint-Petersburg Polytechnic University.

Abstract

The surface harmonics method (SHM) is one of the approaches to neutron-physical reactor computa-tion which reasons and develops the method of homogenization. The symmetry of cells in the method of homogenization and in the SHM is still being used while equations deriving. Cells can be asymmetric in reality. The surface harmonics method allows us to obtain finite-difference equations for a heterogeneous reactor core with asymmetric cells. This allows one to check SHM recommendations on choosing boundaries of the reactor unit cells. The examples of test one dimension tasks solution with asymmetric cells for substantiation of the unit cells boundaries choice for the reactor core are shown in this paper.

Keywords
method of surface harmonics, asymmetric cells, neutron distribution, finite-difference equation, abandonment from diffusion approximation, choosing boundaries of unit cells, test tasks

Article Text (PDF, in Russian)

References

UDC 621.039.5

Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2017, issue 1, 1:5