PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY
Series: Nuclear and Reactor Constants

since 1971

Русский (РФ)

ISSN 2414-1038 (online)

IPPE JSC SCIENTIFIC DISCOVERIES IN THE AREA OF HYDRODYNAMICS OF DISTRIBUTION HEADER SYSTEMS IN NPP HEAT EXCHANGERS AND REACTORS

EDN: QCLBLY

Authors & Affiliations

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, Dr. Sci. (Tech.), associated professor. Contacts: 1, pl. Bondarenko, Obninsk, Kaluga region, Russia, 249033. Tel.: +7 (484) 399-85-68; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..

Abstract

The paper considers the IPPE JSC scientific discoveries in the area of hydrodynamics of distribution header systems (DHS) in heat exchangers and reactors of nuclear power plants (NPP).
A brief analysis is given of the scientific discoveries registered in the USSR for the period from 1969 to 1991 and registered at the International Academy of Authors of Scientific Discoveries and Inventions for the period from 1991 to 2022.
Some definitions related to scientific discoveries and a classification of various typical DNS are presented.
Consideration is given to hydrodynamic features and characteristic patterns of the coolant flow in the DHS flow parts, with different conditions for the coolant supply and removal.
It is demonstrated that in a relatively restricted space and in free space of the DHS the coolant flow is of a jet nature. However, there are a few types of jets and processes to transform one type of jet into another.
A brief description and some formulas are given of the regularity of liquid distribution at the outlet of the DHS flow paths and the phenomenon of hydrodynamic identity in the distribution header systems, registered as scientific discoveries.

Keywords
hydrodynamics, flow part, distribution header system, jet, heat exchanger, nuclear reactor, nuclear power plant, scientific discovery, regularity, phenomenon

Article Text (PDF, in Russian)

References

UDC 621.039.534

Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2022, no. 4, 4:12