Prediction and comparison of aerodynamic performance and flow control for smooth and wavy tube banks in crossflow at subcritical Reynolds numbers using a 3D RANS approach

Morad Belharizi, Omar Ladjedel () and Tayeb Yahiaoui ()
Additional contact information
Morad Belharizi: Aeronautics and Propulsion Systems Laboratory, Mechanical Engineering Department, University of Sciences and Technology of Oran — Mohammed Boudiaf, B. O. Box 1505, El-M’Naouer, 31000 Oran, Algeria†Development Division, Sonatrach, B. O. Box 58, City of Arzew, 31200 Oran, Algeria
Omar Ladjedel: ��Naval Aero-Hydrodynamics Laboratory, Maritime Engineering Department, University of Sciences and Technology of Oran — Mohammed Boudiaf, B. O. Box 1505, El-M’Naouer, 31000 Oran, Algeria
Tayeb Yahiaoui: Aeronautics and Propulsion Systems Laboratory, Mechanical Engineering Department, University of Sciences and Technology of Oran — Mohammed Boudiaf, B. O. Box 1505, El-M’Naouer, 31000 Oran, Algeria

International Journal of Modern Physics C (IJMPC), 2024, vol. 35, issue 10, 1-21

Abstract: This paper investigates the effects of introducing wavy cylinders of appropriate wavelength into tube bundles for the passive control of flow-induced vibration. The Reynolds-averaged Navier–Stokes approach RANS was used to study the turbulent flow characteristics within staggered tube bundles having transverse and longitudinal pitch-to-diameter ratios of 3.8 and 2.1, respectively. Two wavy models are tested with different wavelength-to-mean diameter ratios, namely: Model-A with λ/Dm=2 and Model-B with λ/Dm=1, and their performances are compared with those of a smooth circular tube bundle Model-C (λ/D=∞), in a range of subcritical Reynolds numbers 0.5×104≤Re≤4.1×104. Mean velocity and pressure fields as well as aerodynamic coefficients are presented and compared. According to the obtained results, the wavy tube bundle with λ/Dm=2 exhibits the best performance, with slightly smaller CD values than the smooth tube bundle. However, results show that the wavy model with λ/Dm=1 is clearly the worst with an increase of CD up to 40%. Numerical outcomes also reveal that the interaction of neighboring rows and columns affects the fluctuation of CD values relative to each tube position. Moreover, CD evolutions depend significantly on the variation of Re as well, where drag reduction is more substantial by increasing Re. Thus, wavy-shaped tubes with optimum parameters could be more suitable for flow control by enhancing the secondary flow, turbulence and fluid mixing.

Keywords: Tube bank; smooth cylinder; wavy cylinder; aerodynamic performance; RANS (search for similar items in EconPapers)
Date: 2024
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0129183124501262
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:ijmpcx:v:35:y:2024:i:10:n:s0129183124501262

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0129183124501262

Access Statistics for this article

International Journal of Modern Physics C (IJMPC) is currently edited by H. J. Herrmann

More articles in International Journal of Modern Physics C (IJMPC) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().