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Heat Transfer Research

Impact factor: 0.930

ISSN Print: 1064-2285
ISSN Online: 2162-6561

Heat Transfer Research

DOI: 10.1615/HeatTransRes.v31.i1-2.140
pages 59-63

Enhancement of Heat Transfer in Channels with Artificial Agitation of Flow

Boris V. Dzyubenko
Moscow Aviation Institute (State Technical University), 4 Volokolamskoe Highway, Moscow, 125993, Russia
Guenrikh A. Dreitser
Department of Aviation-Space Thermal Techniques, Moscow Aviation Institute, Volokolamskoe shosse, 4, Moscow, 125993, Russia
R. I. Yakimenko
Moscow State Aviation Institute (Technical University), Moscow, Russia


The results are presented of an experimental investigation of heat transfer by the method of “tube in a tube” − type heat exchanger for differently shaped tubes with artificial turbulization of the flow. Dimensionless equations of heat exchange are obtained for water flow in tubes and in annular channels. These equations were used for estimating the effectiveness of heat transfer surfaces. The investigation of the structure of a turbulent swirled flow made it possible to explain the mechanisms of the enhancement of heat exchange in channels with flow swirling.