Investigation of the scaling of roughness and blowing effects on turbulent channel flow

Investigation of the scaling of roughness and blowing effects on turbulent channel flow A turbulent channel flow facility was used to study the scaling of the combined effects of roughness and flow injection on the mean flow and turbulence characteristics of turbulent plane Poiseuille flow. It was found that the additional momentum injection through the surface enhanced the roughness effects and, for the mean flow, the effect of blowing was indistinguishable from that of increased roughness. This analogy broke down for the turbulence statistics in that the addition of blowing resulted in behavior which did not follow that predicted by Townsend’s hypothesis. Instead, the outer-scaled Reynolds stress was found to deviate from that for the rough-walled boundary condition without blowing well into the outer layer. It was found that this deviation from the expected Reynolds stress scaling behavior was caused by the suppression of kinetic energy content associated with large-scale motions. Experiments in Fluids Springer Journals

Investigation of the scaling of roughness and blowing effects on turbulent channel flow

Loading next page...
Springer Berlin Heidelberg
Copyright © 2014 by Springer-Verlag Berlin Heidelberg
Engineering; Engineering Fluid Dynamics; Fluid- and Aerodynamics; Engineering Thermodynamics, Heat and Mass Transfer
Publisher site
See Article on Publisher Site


You’re reading a free preview. Subscribe to read the entire article.

DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches


Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.



billed annually
Start Free Trial

14-day Free Trial