Investigation of Heat Transfer of a He-Xe Mixture in Heated Channels with Different Shapes of Cross Section
V. E. Nakoryakov, O. V. Vitovskii
Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
Keywords: теплообмен, гелий-ксеноновая смесь, число Прандтля, участок тепловой и гидродинамической стабилизации, тепловой поток, heat transfer, helium-xenon mixture, Prandtl number, Section of thermal and hydrodynamic stabilization, heat flow
Abstract
This paper describes the results of an experimental study of heat transfer in the case of the flow of a helium-xenon mixture with a Prandtl number approximately equal to 0.23 and the flows of pure helium and air in heated tubes of circular or triangular cross sections with a constant density of the heat flux. The region of thermal stability is studied. The law of heat transfer on the stabilized region is compared with known relationships. The approach that helps to obtain an expression for calculating the heat transfer in heat transfers with circular and triangular cross sections, which operate in a mixture heating mode on the initial region is developed.
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