IUTAM Symposium on The Physics of Wall-Bounded Turbulent Flows on Rough Walls

1. Front Matter

   Pages i-xi

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2. Direct Numerical Simulation and PIV Measurement of Turbulent Boundary Layer over a Rod-Roughened Wall

   • Seung-Hyun Lee, Jae Hwa Lee, Hyung Jin Sung

   Pages 1-11

3. Turbulent Flows over Aligned and Inclined Ribs

   • Mark F. Tachie, Martin Agelinchaab

   Pages 13-19

4. An Experimental Study of Turbulent Flow in the Vicinity of Transverse Square Bars

   • Dubravka Pokrajac

   Pages 21-26

5. Boundary Layer Structure over a Two-Dimensional Rough Wall

   • Michael P. Schultz, Ralph J. Volino, Karen Flack

   Pages 27-32

6. Turbulence in Pipe Flows with Small Relative Roughness

   • Alexander Smits, Sean C. C. Bailey, Rick L. Pepe, Michael P. Schultz

   Pages 33-42

7. LDV Measurement Near a Rough Surface for a Turbulent Boundary Layer

   • Takatsugu Kameda, Shinsuke Mochizuki, Hideo Osaka

   Pages 43-48

8. POD Analysis of the Near-Wall Region of a Rough Wall Turbulent Boundary Layer

   • Lyazid Djenidi, Robert Antonia, Muriel Amielh, Fabien Anselmet

   Pages 49-54

9. An Experimental Study of a Turbulent Wall Jet on Smooth and Rough Surfaces

   • Noorallah Rostamy, Donald J. Bergstrom, David Sumner

   Pages 55-60

10. Turbulent Flow Over Urban-Type Roughness Using PIV

    • Mohammad Amir, Ian Castro

    Pages 61-67

11. A High Reynolds Number Turbulent Boundary Layer with Regular ‘Braille-Type’ Roughness

    • Jason P. Monty, Min S. Chong, Romaine Mathis, Nicholas Hutchins, Ivan Marusic, James J. Allen

    Pages 69-75

12. On the Outer Layer Controversy for a Turbulent Boundary Layer over a Rough Wall

    • Robert A. Antonia, Lyazid Djenidi

    Pages 77-86

13. Turbulent Channel Flow over Model “Dynamic” Roughness

    • Beverley J. McKeon

    Pages 87-92

14. Log-Layer Dynamics in Smooth and Artificially-Rough Turbulent Channels

    • Oscar Flores, Javier Jiménez

    Pages 93-98

15. Roughness Scaling Parameters in the Fully-Rough Regime

    • Karen Flack, Michael P. Schultz

    Pages 99-104

16. Transition in Rough Channels

    • Paolo Orlandi

    Pages 105-111

17. Effect of Isotropic Free-stream Turbulence in Favorable Pressure Gradient Turbulent Boundary Layers over a Rough Surface

    • Sheilla Torres-Nieves, José R. Lebrón, Hyung Suk Kang, Brian Brzek, Raúl B. Cal, Charles Meneveau et al.

    Pages 113-119

18. Particulate Impact and Erosion in a Turbulent Serpentine Channel

    • Paul Durbin, Xin Huang

    Pages 121-125

19. Rough Wall Skin Friction Measurements Using a High Resolution Surface Balance

    • Per-Åge Krogstad, Vladislav Efros

    Pages 127-133

20. Modified Hierarchy Structure of Rough-Wall Flows

    • Joseph Klewicki, Faraz Mehdi

    Pages 135-141

The study of wall-bounded turbulent ows is of considerable interest from both scienti c and practical view points. As such it has attracted a great deal of research over the last 100 years. Much research has concentratedon ows over smooth walls since these are simpler from experimental, numerical and theoretical standpoints. The ow over rough walls has still received considerable attention but progress has necessarilybeenslower.Perhapsthemostessentialproblem(certainlyfromaprac- cal point of view) is to be able to predict the skin-frictiondrag acting on a plate (or a body) given a certain known roughness characteristic of the surface. Unfortunately this has proved to be very dif cult since even the simplest rough surfaces can be characterised by a number of different parameters and we still cannot directly c- nectthese tothe uiddynamicdragin a givensituation.Varioustheoriesandmodels have been proposed in order to make progress but there is still some disagreement in the community as to the correct understanding of these important ows.

• IUTAM
• dynamics
• physics
• rough walls
• turbulence
• turbulent flow
• turbulent flows
• wall bounded
• fluid- and aerodynamics

• Dept. Engineering, University of Cambridge, Cambridge, United Kingdom

  T. B. Nickels

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