naa a22 4500 510762212 CHVBK 20180411083143.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1134/S0040601513050029 doi (NATIONALLICENCE)springer-10.1134/S0040601513050029 Recommendations on selecting the closing relations for calculating friction pressure drop in the loops of nuclear power stations equipped with VVER reactors [Elektronische Daten] [V. Alipchenkov, V. Belikov, A. Davydov, D. Emel'yanov, N. Mosunova] Closing relations describing friction pressure drop during the motion of two-phase flows that are widely applied in thermal-hydraulic codes and in calculations of the parameters characterizing the flow of water coolant in the loops of reactor installations used at nuclear power stations and in other thermal power systems are reviewed. A new formula developed by the authors of this paper is proposed. The above-mentioned relations are implemented in the HYDRA-IBRAE thermal-hydraulic computation code developed at the Nuclear Safety Institute of the Russian Academy of Sciences. A series of verification calculations is carried out for a wide range of pressures, flowrates, and heat fluxes typical for transient and emergency operating conditions of nuclear power stations equipped with VVER reactors. Advantages and shortcomings of different closing relations are revealed, and recommendations for using them in carrying out thermal-hydraulic calculations of coolant flow in the loops of VVER-based nuclear power stations are given. Pleiades Publishing, Ltd., 2013 thermal-hydraulic computation code nationallicence wall friction nationallicence closing relation nationallicence nuclear power station nationallicence VVER-type reactor nationallicence verification nationallicence mathematical simulation nationallicence Alipchenkov V. Joint Institute for High Temperatures of the Russian Academy of Sciences, Izhorskaya str., 13 bd. 2, 125412, Moscow, Russia aut Belikov V. Nuclear Safety Institute of the Russian Academy of Sciences, Bol'shaya Tul'skaya str., 52, 115191, Moscow, Russia aut Davydov A. Nuclear Safety Institute of the Russian Academy of Sciences, Bol'shaya Tul'skaya str., 52, 115191, Moscow, Russia aut Emel'yanov D. Nuclear Safety Institute of the Russian Academy of Sciences, Bol'shaya Tul'skaya str., 52, 115191, Moscow, Russia aut Mosunova N. Nuclear Safety Institute of the Russian Academy of Sciences, Bol'shaya Tul'skaya str., 52, 115191, Moscow, Russia aut Thermal Engineering SP MAIK Nauka/Interperiodica 60/5(2013-05-01), 331-337 0040-6015 60:5<331 2013 60 11509 https://doi.org/10.1134/S0040601513050029 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0040601513050029 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Alipchenkov V. Joint Institute for High Temperatures of the Russian Academy of Sciences, Izhorskaya str., 13 bd. 2, 125412, Moscow, Russia aut NATIONALLICENCE 700 1- Belikov V. Nuclear Safety Institute of the Russian Academy of Sciences, Bol'shaya Tul'skaya str., 52, 115191, Moscow, Russia aut NATIONALLICENCE 700 1- Davydov A. Nuclear Safety Institute of the Russian Academy of Sciences, Bol'shaya Tul'skaya str., 52, 115191, Moscow, Russia aut NATIONALLICENCE 700 1- Emel'yanov D. Nuclear Safety Institute of the Russian Academy of Sciences, Bol'shaya Tul'skaya str., 52, 115191, Moscow, Russia aut NATIONALLICENCE 700 1- Mosunova N. Nuclear Safety Institute of the Russian Academy of Sciences, Bol'shaya Tul'skaya str., 52, 115191, Moscow, Russia aut NATIONALLICENCE 773 0- Thermal Engineering SP MAIK Nauka/Interperiodica 60/5(2013-05-01), 331-337 0040-6015 60:5<331 2013 60 11509 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer