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BELHARIZI, M. TAYEB, Y. KHORSI, A. LADJEDEL, O. ADJLOUT, L. ŠIKULA, O.
Originální název
Experimental Investigation of Turbulent Cross-flow in a Staggered Tube Bundle with Wavy Cylinders
Typ
článek v časopise ve Scopus, Jsc
Jazyk
angličtina
Originální abstrakt
This paper presents the results of an investigation on the effects of wavy cylindrical tubes on the turbulent cross-flow in a staggered tube bundle arrangement with transverse and longitudinal pitch-to-diameter ratios of 3.8 and 2.1, respectively. Two models of staggered tube bundles equipped with wavy cylinders are tested; the Model-A having a wavelength ratio (λ/Dm= 2) corresponding to a wave steepness (a/λ = 0.1) and the Model-B having (λ/Dm= 1) corresponding to (a/λ = 0.2).Experimental measurements were performed using a subsonic wind tunnel to study and compare the flow characteristics of the new configuration of cylindrical tubes with that of a similar arrangement with smooth cylinders for Reynolds numbers ranging from 0.5×104 to 2×104 based on the mean tube diameter and the free stream velocity. Experimental results show that the circumferential minimum pressure coefficients for wavy tube bundles are greater than at the bundle with smooth cylinders. As a result, the lift forces of wavy tube bundles are suppressed and a significant drag reduction is observed up to 20% for both wavy models. This continuous reduction of the drag force becomes larger with the increase of Reynolds number. © 2022, Turbomachinery Society of Japan. All rights reserved.
Klíčová slova
drag reduction; flow control; tube bundles; turbulence; vortex shedding; Wavy cylinders
Autoři
BELHARIZI, M.; TAYEB, Y.; KHORSI, A.; LADJEDEL, O.; ADJLOUT, L.; ŠIKULA, O.
Vydáno
1. 9. 2022
Nakladatel
Turbomachinery Society of Japan
ISSN
1882-9554
Periodikum
International Journal of Fluid Machinery and Systems
Ročník
15
Číslo
3
Stát
Korejská republika
Strany od
344
Strany do
355
Strany počet
12
URL
https://www.jstage.jst.go.jp/article/ijfms/15/3/15_344/_article/-char/ja
BibTex
@article{BUT178978, author="Morad {Belharizi} and Yahiaoui {Tayeb} and Azzeddine {Khorsi} and Omar {Ladjedel} and Lahouari {Adjlout} and Ondřej {Šikula}", title="Experimental Investigation of Turbulent Cross-flow in a Staggered Tube Bundle with Wavy Cylinders", journal="International Journal of Fluid Machinery and Systems", year="2022", volume="15", number="3", pages="344--355", doi="10.5293/IJFMS.2022.15.3.344", issn="1882-9554", url="https://www.jstage.jst.go.jp/article/ijfms/15/3/15_344/_article/-char/ja" }