Vortex Intensification of Heat Transfer in Channels and Pipes with Periodic Elements of Discrete Roughness

A complex numerical investigation of vortex intensification of heat transfer in turbulent inhomogeneous medium flow in channels and pipes with periodic elements of discrete roughness has been carried out with the use of multiblock computational technologies, realized in a specialized package VP2/3,...

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Bibliographic Details
Published inJournal of engineering physics and thermophysics Vol. 92; no. 6; pp. 1509 - 1516
Main Authors Isaev, S. A., Chornyi, A. D., Zhukova, Yu. V., Vysotskaya, A. A., Kharchenko, V. B.
Format Journal Article
LanguageEnglish
Published New York Springer US 01.11.2019
Springer
Subjects
Analysis
Classical Mechanics
Complex Systems
Engineering
Engineering Thermodynamics
Heat and Mass Transfer
Industrial Chemistry/Chemical Engineering
Thermodynamics
Turbulence
turbulent flow
discrete roughness
channels
vortex intensification
pipes
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Summary:A complex numerical investigation of vortex intensification of heat transfer in turbulent inhomogeneous medium flow in channels and pipes with periodic elements of discrete roughness has been carried out with the use of multiblock computational technologies, realized in a specialized package VP2/3, and of a modified model of transfer of shear stresses. As roughness elements use was made of asperities and grooves of different geometries, with air and transformer oil used as a working medium. The influence of the geometrical parameters of the indicated channels and pipes as well as of the regime parameters of the flow in them on their thermal and hydraulic efficiency has been analyzed in detail.
ISSN:1062-0125
1573-871X
DOI:10.1007/s10891-019-02070-x