Detail publikace

Experimental Investigation of Turbulent Cross-flow in a Staggered Tube Bundle with Wavy Cylinders

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"
}