Authors & Affiliations
Dmitriev S.M., Dobrov A.A., Doronkov D.V., Khrobostov A.E., Pronin A.N., Ryazanov A.V., Sorokin V.D., Yudin A.V.
Nizhniy Novgorod State Technical University n.a. R.E. Alekseev, Nizhniy Novgorod, Russia
Dmitriev S.M. – Rector, Dr. Sci.(Tech.), Professor, Institute of Nuclear Power Engineering and Technical Physics, Nizhny Novgorod State Technical University. R.E. Alekseeva.
Dobrov A.A. – Senior Lecturer, Institute of Nuclear Power Engineering and Technical Physics, Nizhny Novgorod State Technical University. R.E. Alekseeva.
Doronkov D.V. – Senior Lecturer, Institute of Nuclear Power Engineering and Technical Physics, Nizhny Novgorod State Technical University. R.E. Alekseeva.
Khrobostov A.E. – Director, Cand. Sci. (Tech.), Institute of Nuclear Power Engineering and Technical Physics, Nizhny Novgorod State Technical University. R.E. Alekseeva.
Pronin A.N. – Senior Lecturer, Institute of Nuclear Power Engineering and Technical Physics, Nizhny Novgorod State Technical University. R.E. Alekseeva.
Ryazanov A.V. – Engeneer of the 2nd category, Institute of Nuclear Power Engineering and Technical Physics, Nizhny Novgorod State Technical University. R.E. Alekseeva. Contacts: 24, Minina st., Nizhny Novgorod, Russia, 603155. Tel.: +7(831)436-80-17; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Sorokin V.D. – Engeneer, Institute of Nuclear Power Engineering and Technical Physics, Nizhny Novgorod State Technical University. R.E. Alekseeva.
Yudin A.V. – Masters student, Institute of Nuclear Power Engineering and Technical Physics, Nizhny Novgorod State Technical University. R.E. Alekseeva.
Abstract
The article presents the results of experimental studies of the influence of various designs of the mixing grids on the coolant flow into the PWR. The studies were carried out by simulating coolant flow in the core at a research air test facility, which is an aerodynamic open circuit. Special pneumometric sensors were used to measure the local hydrodynamic characteristics of the flow. These sensors make it possible to measure the velocity vector and the value of the flow velocity. During experimental studies of the local hydrodynamics of coolant, transverse flow rates, as well as the coolant flow rates in the cells of the test TVS-KVADRAT model were measured. The analysis of the spatial distribution of absolute flow velocity projections made it possible to study and detail the flow pattern of the coolant behind the mixing grids with different types of deflectors. The accumulated database about the flow of coolant into the TVS-KVADRAT is the basis of the engineering justification for the construction of the fuel assemblies for core of the PWR. The results of experimental studies are used to verify CFD codes, both foreign and domestic development, as well as programs for detailed zone calculation of reactor cores with a view to reducing conservatism in justifying the thermal engineering reliability of reactor units.
Keywords
nuclear reactor, active zone, fuel assembly, fuel rod, mixing grid, hydrodynamics of coolant
Article Text (PDF, in Russian)
References
1. Dmitriev S.M., Zverev D.L., Byh O.A., Panov Y.K., Sorokin N.M., Farafonov V.A. Osnovnoe oborudovanie AES s korpusnymi reaktorami na teplovyh nejtronah [The main equipment of nuclear power plants with reactor corps on thermal neutrons]. Moscow, Mashinostroenie Publ., 2013. 415 p.
2. Barinov A.A., Dmitriev S.M., Khrobostov A.E., Samoilov O.B. Metody obosnovaniya teplotekhnicheskoy nadezhnosti aktivnoy zony teplovykh vodo-vodyanykh reaktorov [Methods of thermomechanical reliability validation of thermal water-moderated and water-cooled reactor cores]. Atomnaya energiya - Atomic Energy, 2016, no. 5, pp. 270-275.
3. Dmitriev S.M., Samoilov O.B., Khrobostov A.E., Varentsov A.V., Dobrov A.A., Doronkov D.V., Sorokin V.D. Raschetno-eksperimental'nye issledovaniya lokal'noy gidrodinamiki i massoobmena potoka teplonositelya v TVS-Kvadrat reaktorov PWR s peremeshivayushchimi reshetkami [Combined numerical and experimental investigations of local hydrodynamics and coolant flow mass transfer in kvadrat-type fuel assemblies of pwr reactors with mixing grids]. Teploenergetika - Thermal Engineering, 2014, no. 8, pp. 20-27.
4. Dmitriev S.M., Hrobostov A.E., Legchanov M.A., Borodin S.S., Solncev D.N., Sorokin V.D. Osobennosti lokal'noj gidrodinamiki i massoobmena teplonositelya v TVS reaktorov VVER i PWR s peremeshivayushchimi reshetkami [Features of local hydrodynamics and mass transfer of coolant in fuel assemblies of WWER and PWR reactors with mixing grids]. Teplovye processy v tehnike - Thermal processes in engineering, 2014, no. 3, pp. 98-107.
5. Dmitriev S.M., Borodin S.S., Legchanov M.A., Solntsev D.N., Sorokin V.D., Khrobostov A.E. Eksperimental'nye issledovaniya gidrodinamicheskikh i massoobmennykh kharakteristik potoka teplonositelya v TVSA VVER [Experimental researches of hydrodynamic and mass exchange heat-carrier flow features in fuel assemblies in the vver reactors]. Atomnaya energiya - Atomic Energy, 2015, no. 5, pp. 252-257.
6. Borodin S.S., Varentsov A.V., Dobrov A.A., Doronkov D.V., Dmitriev S.M., Pronin A.N., Solntsev D.N., Sorokin V.D., Khrobostov A.E. Raschetno-ehksperimental'nye issledovaniya lokal'nyh gidrodinamicheskih i massoobmennyh harakteristik potoka teplonositelya v TVSA reaktorov VVER s peremeshivayushchimi reshetkami [Calculation and experimental studies of local hydrodynamic and mass-exchange characteristics of the coolant flow in the TVSA of VVER reactors with mixing gratings]. Teplovye processy v tehnike - Thermal processes in engineering, 2015, no. 4, pp. 177-182.
7. Dmitriev S.M., Varentsov A.V., Dobrov A.A., Doronkov D.V., Legchanov M.A., Khrobostov A.E. Issledovanie massoobmena teplonositelya za peremeshivayushchimi reshetkami TVS reaktorov VBER-300 s tsel'yu obosnovaniya ikh effektivnosti [Study of coolant mass transfer behind the VBER-300 FA mixing grids in order to substantiate their effectiveness]. Trudy Nizhegorodskogo gosudarstvennogo tekhnicheskogo universiteta im. R.E. Alekseeva - Proceedings of Nizhny Novgorod State Technical University R.E. Alekseeva, 2013, no. 5, pp. 197-205.
8. Gukhman A.A. Vvedenie v teoriyu podobiya [Introduction to the theory of similarity]. Moscow, Vysshaya shkola Publ., 1973. 296 p.
UDC 621.029
Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2018, issue 3, 3:18
