Experimental investigation of heat transfer and friction factor in discrete roughened tubes in forced flow of water

Аuthors

Schelchkov A. V.^*, Popov I. A., Yarkaev M. Z.^**, Rusev A. K.^***

Kazan National Research Technical University named after A.N. Tupolev, 10, Karl Marks str., Kazan, 420111, Russia

*e-mail: lexa_kzn@mail.
**e-mail: marselyarkaev@gmail.com
***e-mail: msshadowsm@gmail.com

Abstract

The paper presents the results of experimental studies on friction factor and heat transfer in tubes with 2D- (obtained by rolling) and 3D- (obtained by stamping) discrete roughness for forced convection of water in the range of Reynolds number Re = 200 ÷ 100,000. Preliminary assessment of thermal-hydraulic performance data was done.

Keywords:

surface intensifiers; dimples; ring rolling; thermal-hydraulic performance

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