Investigation of the melt movement along the fuel pin surface during accidents
E.V. Usov1, I.A. Klimonov1, S.I. Lezhnin2,1, P.D. Lobanov2,1
1Nuclear Safety Institute of the Russian Academy of Sciences, Novosibirsk, Russia
2Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
Keywords: ТВЭЛ, авария, расплав, пленка, fuel pin, accident, melt, film
Abstract
Methods for calculating the motion of a melt along the fuel element surface under the conditions of an accident are presented. The calculation was carried out using semianalytic methods for the shear stress and gravity-driven films. The results of calculations of the motion of a melt under various initial conditions are presented. Particular attention is paid to the influence of surface tension forces on the interface between the melt and a solid surface.
|
