CONVECTIVE HEAT TRANSFER OF A SINGLE DROP-SHAPED TUBE

The paper presents the results of investigating hydraulic losses and convective heat transfer of single drop-shaped
tubes in air flow around them on both the side of the small diameter and the side of the large diameter in the range
of Reynolds numbers 1.5∙10 ⁴ –7∙10 ⁴ . A similarity equation Nu = f (Re) is suggested, allowing an estimate of a total
heat transfer of drop-shaped tubes with an error of ±2.5%, and similarity equations Eu = f (Re) are proposed, mak-
ing it possible to assess the hydraulic losses in flow around them on the side of the large diameter (with an error
of ±(2–20)% and the small diameter (with an error of ±2%), respectively. It is shown that the use of drop-shaped
tubes as elements of heat exchange devices is promising. The obtained results can serve as the basis for further
investigations of hydraulic losses and heat transfer of drop-shaped tubes.

Author:  Yu. V. Zhukova, T. A. Baranova, A. D. Chorny, I. A. Popov
Keywords:  computational hydrogasdynamics, turbulence, convective heat transfer, hydraulic losses, similarity equation
Page:  1267