The Effect of Boundary Conditions on the Modeling of Anomalous Intensification of Turbulent Heat Transfer in an Inclined Groove in the Wall of a Narrow Channel

S. A. Isaev; Исаев С. А.; A. G. Sudakov; Судаков А. Г.; D. V. Nikushchenko; Никущенко Д. В.; V. B. Kharchenko; Харченко В. Б.; L. P. Iunakov; Юнаков Л. П.

doi:10.31857/S1024708423600367

The Effect of Boundary Conditions on the Modeling of Anomalous Intensification of Turbulent Heat Transfer in an Inclined Groove in the Wall of a Narrow Channel

Authors: Isaev S.A.¹^,2, Sudakov A.G.², Nikushchenko D.V.¹, Kharchenko V.B.¹, Iunakov L.P.³
Affiliations:
1. St. Petersburg State Marine Technical University
2. St. Petersburg State University of Civil Aviation
3. Baltic State Technical University “Voenmekh”
Issue: No 6 (2023)
Pages: 38-47
Section: Articles
URL: https://journals.rcsi.science/1024-7084/article/view/231727
DOI: https://doi.org/10.31857/S1024708423600367
EDN: https://elibrary.ru/RBCVPD
ID: 231727

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Abstract

The effect of the boundary conditions of the first and second kind on the predicted characteristics of anomalous heat transfer intensification in the case of turbulent low-velocity air flow over an inclined groove in the hot wall of a narrow channel is numerically investigated. It is shown that the isothermality conditions lead to a considerable underestimation of the thermal efficiency of a surface structured with narrow grooves, compared with the conditions of heat flux constancy.

Keywords

heat transfer intensification, separation flow, tornado-like vortex, turbulence, inclined groove, narrow channel, first and second kind conditions

About the authors

S. A. Isaev

St. Petersburg State Marine Technical University;St. Petersburg State University of Civil Aviation

Email: isaev3612@yandex.ru
190121, St. Petersburg, Russia; 196210, St. Petersburg, Russia

A. G. Sudakov

St. Petersburg State University of Civil Aviation

Email: isaev3612@yandex.ru
196210, St. Petersburg, Russia

D. V. Nikushchenko

St. Petersburg State Marine Technical University

Email: isaev3612@yandex.ru
190121, St. Petersburg, Russia

V. B. Kharchenko

St. Petersburg State Marine Technical University

Email: isaev3612@yandex.ru
190121, St. Petersburg, Russia

L. P. Iunakov

Baltic State Technical University “Voenmekh”

Author for correspondence.
Email: isaev3612@yandex.ru
190005, St. Petersburg, Russia

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