Spectral and Probability-Density Nature of Square-Prism Separation-Reattachment Wall Pressures

[+] Author and Article Information
J. B. Wedding, J. A. Peterka

Colorado State University, Fort Collins, Colo. 80523

J. M. Robertson

University of Illinois, Urbana-Champaign, Ill. 61801

R. E. Akins

Technical Staff, Sandia Laboratories, Albuquerque, N. M. 87115

J. Fluids Eng 100(4), 485-492 (Dec 01, 1978) (8 pages) doi:10.1115/1.3448712 History: Received July 25, 1977; Online October 12, 2010


The statistical nature of the fluctuating pressures associated with the separation-reattachment flow were studied for a two-dimensional square prism in uniform flow for low (0.33 percent) and high (10.4 percent) turbulence levels. Studies were also made with a splitter plate to inhibit the feedback effect arising from vortex shedding. The nature of the separation reattachment flow was charcterized by use of the measured value of the mean and fluctating pressure fields. Spectral distribution of the unsteady pressures reveals strong energy spikes at the Strenthal frequency which are eliminated by the pressure of the splitler plate. Probability density distributions indicate appreciably non-Gaussian nature only in the wake. Additional information is presented on the variation with angle of the Strouhal frequency for the wake flow.

Copyright © 1978 by ASME
Your Session has timed out. Please sign back in to continue.





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