DOI: 10.55176/2414-1038-2020-2-141-149

Authors & Affiliations

Levchenko V.A., Kascheev M.V., Dorokhovich S.L., Zaytsev A.A.
The Limited Liability Company "Simulation Systems Ltd.", Obninsk, Russia

Levchenko V.A. – Director, Cand. Sci. (Techn.).
Kascheev M.V. – Leading Researcher, Dr. Sci. (Techn.), Associate Professor. Contacts: 133, Lenin st., Obninsk, Kaluga region, Russia, 249035. Tel.: +7 (484) 396-03-61; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Dorokhovich S.L. – Chief Engineer, Cand. Sci. (Techn.), Associate Professor.
Zaytsev A.A. – Head of the Laboratory, Cand. Sci. (Techn.).


The problem of determining a two-dimensional non-stationary temperature field in a k-layer cylinder and plate of length l is solved. There is a symmetrically located gap (plate) or cylindrical cavity (cylinder) in the center of these bodies. The absence of a gap or cavity is a special case of the problem. In each layer, there are heat sources, depending on the coordinates and time. The initial temperature of the layers is a function of the coordinates. In the center of the bodies the symmetry condition is fulfilled. At the boundary of contact of the layers — ideal thermal contact: continuity of temperatures and heat flows. On the inner and outer side surfaces and ends, heat exchange occurs according to Newton's law with environments whose temperatures change over time according to an arbitrary law. With the help of the geometric parameter Г in the mathematical formulation of the problem, one differential equation for both multilayer bodies is written. The problem in this statement is solved for the first time. For the solution of the problem the following approach is used: by means of the method of finite integral transformations differential operations on longitudinal and transverse coordinates are sequentially excluded, and the determination of time dependence of temperature is reduced to the solution of the ordinary differential equation of the first order.

fusible metals and alloys, lead-bismuth coolant, reactor facilities, continuous casting machines, steel crystallizer

Article Text (PDF, in Russian)


UDC 536.21

Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2020, issue 2, 1:13