Theory of hydraulic resistance in turbulent flow in direct round tubes with smoothed (addressed) flow turbulators

Abstract

The mathematical modeling of isothermal hydraulic resistance in turbulent flow in canals under conditions of intensification of heat exchange for conditions of smoothly outlined turbulators was carried out. It showed that an increase in the Reynolds number can favorably affect the intensification of heat transfer, and the best effects of heat exchange intensification are achieved if the laws differ substantially from self-similar ones. In the article it was revealed that the hydraulic resistance, theoretically calculated for this model, referred to the hydraulic resistance for a smooth pipe, calculated by the Blasius formula, decreases with increasing Reynolds number. The results can be used to intensify heat transfer in heat exchangers used in aviation and rocket and space technology.