A.D. Yefanov
The Institute of Physics and Power Engineering, Obninsk, Kaluga Region, Russia.
A.A. Zaitsev
The Institute of Physics and Power Engineering, Obninsk, Kaluga Region, Russia.
S.V. Kanukhina
The Institute of Physics and Power Engineering, Obninsk, Kaluga Region, Russia.
V. M. Kashcheev
State Scientific Center of the Russian FederationPhysics and Power Engineering Institute, Obninsk, Russia
Yu. V. Muranov
State Scientific Center of the Russian FederationPhysics and Power Engineering Institute, Obninsk, Russia
E.V. Nomofilov
The Institute of Physics and Power Engineering, Obninsk, Kaluga Region, Russia.
N.N. Shangin
The Institute of Physics and Power Engineering, Obninsk, Kaluga Region, Russia.
Yu. S. Yur'ev
State Scientific Center of the Russian FederationPhysics and Power Engineering Institute, Obninsk, Russia
V.V. Smirnov
The Scientific-Productive Association "Typhoon", Obninsk, Kaluga Region, Russia.
V. Bezlepkin
FSUE SPAEP, 9/2a, 2nd Sovetskaya Street, St. Petersburg, 191036, Russia
The paper deals with the description of basic elements of mathematical models incorporated in the KUPOL - series codes and designated to evaluate the velocity and temperature fields and the concentration of the components of the medium in containment compartments during LOCA accidents. The problems related to closing equations are being discussed . The results calculated using a two- and one-dimensional and multipoint model are presented in comparison with the test data obtained on physical models of volumes of 1 m3 , 100 m3 and S200 m3 at a steam flow rate up to 1000 kg/hr.