Numerical evaluation of the thermal-hydraulic performance of rectangular riblets in a tube
https://doi.org/10.25206/2588-0373-2026-10-1-13-21
EDN: OZHBQW
Abstract
The aim of the research is to explore the potential for enhancing heat transfer and reducing hydraulic losses in piping systems by employing structured surfaces.
An evaluation of the thermal-hydraulic performance of rectangular riblets with a height of h = 1 mm and a height-to-width ratio of h/t = 1.1 is performed in comparison with a smooth surface and surfaces with equivalent sand-grain roughness (heights of 0.2; 0.3; 0.4; and 0.5 mm) under fully developed turbulent flow conditions at a Reynolds number of Re = 20 000. The authors conduct the research basing on CFD simulation results by the Ansys Fluent 19.1 R1 with periodic boundary conditions.
The results show that, unlike other surface types, the investigated surface with rectangular riblets demonstrates high thermal-hydraulic efficiency among all considered pipe surface forms (86 % higher compared to the smooth surface). Therefore, the research clearly demonstrates the high potential for the widespread application of riblets in thermal-hydraulic systems.
About the Authors
S. A. Zaides
Irkutsk National Research Technical University
Russian Federation
Russian Federation
ZAIDES Semen Azikovich, Doctor of Technical Sciences, Professor, Professor of the Materials Science, Welding and Additive Technologies Department
AuthorID (RSCI): 324067
Lermontov St., 83, Irkutsk, 664074
Tuan Dung Tran
Irkutsk National Research Technical University
Russian Federation
Russian Federation
TRAN Tuan Dung, Postgraduate of the Materials Science, Welding and Additive Technologies Department
Lermontov St., 83, Irkutsk, 664074
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Review
For citations:
Zaides S.A., Tran T. Numerical evaluation of the thermal-hydraulic performance of rectangular riblets in a tube. Omsk Scientific Bulletin. Series Aviation-Rocket and Power Engineering. 2026;10(1):13-21. (In Russ.) https://doi.org/10.25206/2588-0373-2026-10-1-13-21. EDN: OZHBQW
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