0
Research Papers: Fundamental Issues and Canonical Flows

Flow Characteristics of Three-Dimensional Curved Wall Jets on a Cylinder

[+] Author and Article Information
Mirae Kim

School of Mechanical Engineering,
Pusan National University,
Busan 609-735, South Korea
e-mail: futurekim@pusan.ac.kr

Hyun Dong Kim

School of Mechanical Engineering,
Pusan National University,
Busan 609-735, South Korea
e-mail: marine797@pusan.ac.kr

Eunseop Yeom

School of Mechanical Engineering,
Pusan National University,
Busan 609-735, South Korea
e-mail: esyeom@pusan.ac.kr

Kyung Chun Kim

School of Mechanical Engineering,
Pusan National University,
Busan 609-735, South Korea
e-mail: kckim@pusan.ac.kr

1Corresponding author.

Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received June 24, 2017; final manuscript received September 14, 2017; published online November 16, 2017. Assoc. Editor: Devesh Ranjan.

J. Fluids Eng 140(4), 041201 (Nov 16, 2017) (7 pages) Paper No: FE-17-1377; doi: 10.1115/1.4038089 History: Received June 24, 2017; Revised September 14, 2017

Three-dimensional (3D) curved wall jets are a significant topic in various applications related to local heat and mass transfer. This study investigates the effects of the impinging angle and Reynolds number with a fixed distance from the nozzle to the surface of a cylinder. The particle image velocimetry (PIV) method was used to measure the mean streamwise velocity profiles, which were normalized by the maximum velocity along the centerline of the impinging jet onto the cylinder. After the impingement of the circular jet, a 3D curved wall jet develops on the cylinder surface due to the Coanda effect. At a given Reynolds number, the initial momentum of the wall jet increases, and flow separation occurs further downstream than in normal impingement as the impinging angle increases. At a given impinging angle, flow separation is delayed with increasing Reynolds number. A self-preserving wall jet profile was not attained in the 3D curved wall jet. The turbulence intensity and the Reynolds shear stress were obtained to analyze the turbulence characteristics. The radial turbulence intensity showed similar tendencies to a two-dimensional (2D) curved wall jet, but the streamwise turbulence intensity was dissimilar. The Reynolds shear stress decreases downstream of the cylinder wall due to the decreased velocity and centrifugal force.

FIGURES IN THIS ARTICLE
<>
Copyright © 2018 by ASME
Your Session has timed out. Please sign back in to continue.

References

Champagne, F. H. , and Wygnanski, I. J. , 1971, “ An Experimental Investigation of Coaxial Turbulent Jets,” Int. J. Heat Mass Transfer, 14(9), pp. 1445–1464. [CrossRef]
Irwin, H. P. A. H. , and Smith, A. P. , 1975, “ Prediction of the Effect of Streamline Curvature on Turbulence,” Phys. Fluids, 18(6), pp. 624–630. [CrossRef]
Kobayashi, R. , and Fujisawa, N. , 1983, “ Curvature Effects on Two-Dimensional Turbulent Wall Jets,” Ing.-Arch., 53(6), pp. 409–417. [CrossRef]
Alcaraz, E. , Charnay, G. , and Mathieu, J. , 1977, “ Measurements in a Wall Jet Over a Convex Surface,” Phys. Fluids, 20(2), pp. 203–210. [CrossRef]
Rostamy, N. , Bergstrom, D. J. , Sumner, D. , and Bugg, J. D. , 2011, “ An Experimental Study of a Turbulent Wall Jet on Smooth and Transitionally Rough Surfaces,” ASME J. Fluids Eng., 133(11), p. 111207.
Launder, B. E. , and Rodi, W. , 1981, “ The Turbulent Wall Jet,” Prog. Aerosp. Sci., 19, pp. 81–128. [CrossRef]
Launder, B. E. , and Rodi, W. , 1983, “ The Turbulent Wall Jet Measurements and Modeling,” Annu. Rev. Fluid Mech., 15, pp. 429–459. [CrossRef]
Wilson, D. J. , and Goldstein, R. J. , 1976, “ Turbulent Wall Jets With Cylindrical Streamwise Surface Curvature,” ASME J. Fluids Eng., 98(3), pp. 550–557. [CrossRef]
Neuendorf, R. , and Wygnanski, I. , 1999, “ On a Turbulent Wall Jet Flowing Over a Circular Cylinder,” J. Fluid Mech., 381, pp. 1–25. [CrossRef]
Neuendorf, R. , Lourenco, L. , and Wygnanski, I. , 2004, “ On Large Streamwise Structures in a Wall Jet Flowing Over a Circular Cylinder,” Phys. Fluids, 16(7), pp. 2158–2169. [CrossRef]
Han, G. , De Zhou, M. , and Wygnanski, I. , 2006, “ On Streamwise Vortices and Their Role in the Development of a Curved Wall Jet,” Phys. Fluids, 18, p. 095104.
Danon, R. , Gregory, J. W. , and Greenblatt, D. , 2016, “ Transient Wall-Jet Flowing over a Circular Cylinder,” Exp. Fluids, 57(141), pp. 1–14.
Brahma, R. K. , Faruque, O. , and Arora, R. C. , 1991, “ Experimental Investigation of Mean Flow Characteristics of Slot Jet Impingement on a Cylinder,” Wärme- Und Stoffübertragung, 26(5), pp. 257–263. [CrossRef]
Lee, D. H. , Chung, Y. S. , and Kim, D. S. , 1997, “ Turbulent Flow and Heat Transfer Measurements on a Curved Surface With a Fully Developed Round Impinging Jet,” Int. J. Heat Fluid Flow, 18(1), pp. 160–169. [CrossRef]
Chan, T. L. , Zhou, Y. , Liu, M. H. , and Leung, C. W. , 2003, “ Mean Flow and Turbulence Measurements of the Impingement Wall Jet on a Semi-Circular Convex Surface,” Exp. Fluids, 34(1), pp. 140–149. [CrossRef]
Esirgemez, E. , Newby, J. W. , Nott, C. , Ölçmen, S. M. , and Ötügen, V. , 2007, “ Experimental Study of a Round Jet Impinging on a Convex Cylinder,” Meas. Sci. Technol., 18, pp. 1800–1810. [CrossRef]
Yi, S. J. , Kim, M. , Kim, D. , Kim, H. D. , and Kim, K. C. , 2016, “ Transient Temperature Field and Heat Transfer Measurement of Oblique Jet Impingement by Thermographic Phosphor,” Int. J. Heat Mass Transfer, 102, pp. 691–702. [CrossRef]
CÎRCIU, I. , and BOŞCOIANU, M. , 2010, “ An Analysis of the Efficiency of Coanda-NOTAR Anti-Torque Systems for Small Helicopters,” INCAS Bull., 2(4), pp. 81–88.
New, T. H. , and Long, J. , 2015, “ Dynamics of Laminar Circular Jet Impingement Upon Convex Cylinders,” Phys. Fluids, 27(2), p. 024109. [CrossRef]
Keane, R. D. , and Adrian, R. J. , 1992, “ Theory of Cross-Correlation Analysis of PIV Images,” Appl. Sci. Res., 49(3), pp. 191–215. [CrossRef]
Melling, A. , 1997, “ Tracer Particles and Seeding for Particle Image Velocimetry,” Meas. Sci. Technol., 8(12), pp. 1406–1416. [CrossRef]
Cornaro, J. C. , Fleischer, A. S. , and Goldstein, R. J. , 1999, “ Flow Visualization of a Round Jet Impinging on Cylindrical Surfaces,” Exp. Therm. Fluid Sci., 20(2), pp. 66–78. [CrossRef]
Fleischer, A. S. , Kramer, K. , and Goldstein, R. J. , 2001, “ Dynamics of the Vortex Structure of a Jet Impinging on a Convex Surface,” Exp. Therm. Fluid Sci., 24(3–4), pp. 169–175. [CrossRef]
Khayrullina, A. , van Hooff, T. , Blocken, B. , and van Heijst, G. J. F. , 2017, “ PIV Measurements of Isothermal Plane Turbulent Impinging Jets at Moderate Reynolds Numbers,” Exp. Fluids, 58(31), pp. 1–16.

Figures

Grahic Jump Location
Fig. 1

An illustration of the experimental setup and field of view

Grahic Jump Location
Fig. 2

Flow configuration and coordinate system of mean velocity profile

Grahic Jump Location
Fig. 3

Mean velocity field at view #1 for (a) α = 0 deg, Re# = 11,800 and (b) α = 45 deg, Re# = 11,800

Grahic Jump Location
Fig. 4

Mean velocity field at combined view #2 and view #3 for (a) α = 0 deg and (b) α = 45 deg; Re# = 3300, 7100, and 11,800 from the left side

Grahic Jump Location
Fig. 5

Mean velocity profile with various cylindrical angles compared with slot jet (Chan et al. [15])

Grahic Jump Location
Fig. 6

Mean velocity profiles for θ = 15 deg, 60 deg, and 120 deg with respect to impinging angle and Reynolds number

Grahic Jump Location
Fig. 7

Development of jet half width according to the impinging angle and Reynolds number, which is normalized by the jet nozzle diameter

Grahic Jump Location
Fig. 8

Turbulence intensity profile: streamwise component: (a) α = 0 deg and (b) α = 45 deg at Re# = 11,800; radial component: (c) α = 0 deg and (d) α = 45 deg at Re# = 11,800

Grahic Jump Location
Fig. 9

Contour of Reynolds shear stress normalized by jet exit velocity. Streamlines are inserted for better clarity. (a) α = 0 deg, Re# = 3300 (b) α = 0 deg, Re# = 11,800, and (c) α = 45 deg, Re# = 11,800.

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In