Abstract
Is solved the problem of heat transfer in the closed volume, limited by heat-conducting walls, with the local source of heat emission and the heterogeneous conditions of heat sink on the outer boundaries of solution area. The problem of convective heat transfer is solved with using a system of differential Navier-Stokes equations in the Boussinesq approximation. The simulation of turbulent flow conditions of heated air is carried out within the framework to k -e model. On the basis the analysis of the obtained temperature field and the contour lines of stream functions is made conclusion about the essential transiency of the process in question. The obtained values of temperatures and speeds in different sections of region illustrate turbulence of the process. Are investigated laws governing the formation of temperature fields in closed areas with a local heat emission source under the conditions of intensive local heat sink into environment and accumulation of heat in the enclosing constructions.
Highlights
The problem of convective heat transfer is solved with using a system of differential Navier-Stokes equations in the Boussinesq approximation
Are investigated laws governing the formation of temperature fields in closed areas with a local heat emission source under the conditions of intensive local heat sink into environment and accumulation of heat in the enclosing constructions
The problems of conduction and convection in the closed volumes are solved for many versions of settings
Summary
The problems of conduction and convection in the closed volumes are solved for many versions of settings. In spite of intensive studies in this direction, until recently are not established laws governing the processes of heat transfer in the gas cavities with the solid heatconducting walls under the conditions of local intensive heat transfer into the environment in relatively small section of region boundaries. The purpose of this work is to solve the problem of heat transfer in a closed rectangular cavity with the solid heat-conducting walls and the local energy source at one of the boundaries under intense heat on the boundary sections into the environment
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