DOI: 10.55176/2414-1038-2020-4-129-137

Authors & Affiliations

Lunina S.V., Delnov V.N.

A. I. Leypunsky Institute for Physics and Power Engineering, Obninsk, Russia

Delnov V.N. – Head of Division of Scientific and Technical Information.
Lunina S.V. – Research engineer. Contacts: 1, pl. Bondarenko, Obninsk, Kaluga region, Russia, 249033. Tel.: +7 (484) 399-53-57; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..


The paper presents the results of test calculations of hydrodynamics for distribution header systems (DHS) in heat exchangers and reactors of nuclear power plants (NPP). The header system is a typical element of the flow path in the specified NPP equipment, their efficient and safe operation is a priority area for Rosatom State Corporation. The calculations have been performed with the use of computational fluid dynamics software systems known as CFD codes. The results of calculations are presented for the coolant turbulent flow in the flow paths of the flat and cylindrical DHS with different conditions for the coolant supply and removal. A comparative analysis of the calculation results and experimental data on hydrodynamics of DHS typical of the nuclear power plants has been carried out, their satis-factory agreement has been shown. An assumption is made of the legitimacy of using the CFD code for the calculation of hydrodynamics of various DHS types and their specific typical elements.

hydrodynamics, flow path, distribution header system, test calculations, heat exchanger, nuclear reac-tor, nuclear power plant, CFD code

Article Text (PDF, in Russian)


UDC 621.039

Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2020, issue 4, 4:12