Study of heat transfer of a helium–xenon mixture in heated channels with different cross-sectional shapes

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...

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Bibliographic Details
Published in:Journal of applied mechanics and technical physics 2017-07, Vol.58 (4), p.664-669
Main Authors: Nakoryakov, V. E., Vitovsky, O. V.
Format: Article
Language:English
Subjects:
Applications of Mathematics
Classical and Continuum Physics
Classical Mechanics
Cross-sections
Flow stability
Fluid- and Aerodynamics
Heat transfer
Heat transmission
Helium
Helium-Xenon
Mathematical Modeling and Industrial Mathematics
Mechanical Engineering
Physics
Physics and Astronomy
Prandtl number
Studies
Thermal stability
Tubes
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Summary: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 flow. 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 obtaining an expression for the calculation of heat transfer in heat transfer devices with circular and triangular cross sections, which operate in a mixture heating mode on the initial region, is developed.
ISSN:0021-8944
1573-8620
DOI:10.1134/S0021894417040101