0
Research Papers: Fluid-Structure Interaction

Experimental Investigation of a Tandem Cylinder System With a Yawed Upstream Cylinder

[+] Author and Article Information
Stephen J. Wilkins

e-mail: x514a@unb.ca

Joseph W. Hall

e-mail: jwhall@unb.ca
Department of Mechanical Engineering,
University of New Brunswick,
Fredericton, NB E3B 5A3, Canada

1Corresponding author.

Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received August 13, 2012; final manuscript received September 17, 2013; published online November 27, 2013. Assoc. Editor: Jong Chull Jo.

J. Pressure Vessel Technol 136(1), 011302 (Nov 27, 2013) (8 pages) Paper No: PVT-12-1127; doi: 10.1115/1.4025612 History: Received August 13, 2012; Revised September 17, 2013

The unsteady flow field produced by a tandem cylinder system with the upstream cylinder yawed to the mean flow direction is investigated for upstream cylinder yaw angles from α=60deg to α=90deg. Multipoint fluctuating surface pressure and hot-wire measurements were conducted at various spanwise positions on both the upstream and downstream cylinders. The results indicate that yawing the front cylinder to the mean flow direction causes the pressure and velocity spectra on the upstream and downstream cylinders to become more broadband than for a regular tandem cylinder system, and reduces the magnitude of the peak associated with the vortex-shedding. However, spanwise correlation and coherence measurements indicate that the vortex-shedding is still present and was being obscured by the enhanced three-dimensionality that the upstream yawed cylinder caused. When the cylinder was yawed to α=60deg, the pressure fluctuations became extremely broadband and exhibited shorter spanwise correlation.

FIGURES IN THIS ARTICLE
<>
Copyright © 2014 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Fig. 1

Schematic of a tandem cylinder system with a yawed upstream cylinder for (a) α = 90deg, (b) α = 80deg, (c) α = 70deg, and (d) α = 60deg

Grahic Jump Location
Fig. 2

Pressure spectra for α = 90deg

Grahic Jump Location
Fig. 3

Normalized power spectra for various locations for α = 80deg at RE = 56,000

Grahic Jump Location
Fig. 4

Upstream cylinder spanwise correlation referenced to bottom upstream microphone for α = 80deg

Grahic Jump Location
Fig. 5

Upstream cylinder spanwise correlation referenced to top upstream microphone for α = 80deg

Grahic Jump Location
Fig. 6

Downstream cylinder spanwise correlation referenced to bottom downstream microphone for α = 80deg

Grahic Jump Location
Fig. 7

Upstream cylinder spanswise coherence referenced to bottom upstream microphone for α = 80deg

Grahic Jump Location
Fig. 8

Downstream cylinder spanwise coherence referenced to bottom downstream microphone for α = 80deg

Grahic Jump Location
Fig. 9

Downstream cylinder spanwise coherence referenced to bottom upstream microphone for α = 80deg

Grahic Jump Location
Fig. 10

Normalized power spectra for various locations for α = 70deg at RE = 56,000

Grahic Jump Location
Fig. 11

Normalized power spectra for various locations for α = 60deg at RE = 56,000

Grahic Jump Location
Fig. 12

Upstream cylinder spanwise coherence referenced to bottom upstream microphone for α = 60deg

Grahic Jump Location
Fig. 13

Downstream cylinder spanwise coherence referenced to bottom downstream microphone for α = 60deg

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