A wind-tunnel study of turbulent flow close to regularly arrayed rough surfaces

1980 ◽  
Vol 18 (4) ◽  
pp. 373-397 ◽  
Author(s):  
M. R. Raupach ◽  
A. S. Thom ◽  
I. Edwards
Keyword(s):  
Wind Tunnel ◽  
Turbulent Flow ◽  
Rough Surfaces ◽  
Wind Tunnel Study

scholarly journals Turbulent Flow Inside and Above a Wind Farm: A Wind-Tunnel Study

Energies ◽  
2011 ◽  
Vol 4 (11) ◽  
pp. 1916-1936 ◽  
Author(s):  
Leonardo P. Chamorro ◽  
Fernando Porté-Agel
Keyword(s):  
Wind Tunnel ◽  
Turbulent Flow ◽  
Wind Farm ◽  
Wind Tunnel Study

A wind tunnel study of turbulent flow around single and multiple windbreaks, part I: Velocity fields

1996 ◽  
Vol 80 (1-2) ◽  
pp. 127-165 ◽  
Author(s):  
M. J. Judd ◽  
M. R. Raupach ◽  
J. J. Finnigan
Keyword(s):  
Wind Tunnel ◽  
Turbulent Flow ◽  
Velocity Fields ◽  
Wind Tunnel Study

Wind tunnel study of turbulent flow past an urban canyon model

2013 ◽  
Vol 13 (4) ◽  
pp. 403-416 ◽  
Author(s):  
Edson R. Marciotto ◽  
Gilberto Fisch
Keyword(s):  
Wind Tunnel ◽  
Turbulent Flow ◽  
Urban Canyon ◽  
Flow Past ◽  
Wind Tunnel Study

Predicting Skin Friction for Turbulent Flow Over Randomly-Rough Surfaces Using the Discrete-Element Method: Part II — Skin Friction Validation

2003 ◽  
Author(s):  
Stephen T. McClain ◽  
B. Keith Hodge ◽  
Jeffrey P. Bons
Keyword(s):  
Surface Roughness ◽  
Wind Tunnel ◽  
Discrete Element Method ◽  
Turbulent Flow ◽  
Skin Friction ◽  
Rough Surfaces ◽  
Roughness Element ◽  
Discrete Element ◽  
Randomly Rough Surface ◽  
Element Method

The discrete-element method for predicting skin friction for turbulent flow over rough surfaces considers the drag on the surface to be the sum of the skin friction on the flat part of the surface and the drag on the individual roughness elements that protrude into the boundary layer. The discrete-element method has been widely used and validated for roughness composed of sparse, ordered, and deterministic elements. This paper extends the validation of the discrete-element to include real (random and closely packed) surface roughness. To analyze flow over a randomly-rough surface using the discrete-element method, the roughness element blockage fraction and the roughness element cross-section area distributions as a function of height must be determined from surface profilometer measurements. The technique developed for determining these distributions was described in Part 1. This paper, Part 2, describes the modifications that were made to the discrete-element roughness method to extend the validation to real surface roughness. These modifications include accounting for the deviation of the roughness element cross sections from circular configurations and the determination of the location of the computational “surface,” that differs from the physical surface. Two randomly-rough surfaces, two analog surfaces were generated using a three-dimensional printer for wind-tunnel testing. The analog surfaces were created by replacing each random roughness element from the original randomly-rough surface with an elliptical roughness element with the equivalent plan area and eccentricity. The results of the wind tunnel skin friction measurements and the discrete-element method predictions for each of the six surfaces are presented and discussed. For each randomly-rough and analog surface studied, the discrete-element method predictions are within 7% of the experimentally measured skin friction coefficients.

A wind tunnel study of turbulent flow over a two-dimensional ridge

1990 ◽  
Vol 50 (1-4) ◽  
pp. 277-317 ◽  
Author(s):  
J. J. Finnigan ◽  
M. R. Raupach ◽  
E. F. Bradley ◽  
G. K. Aldis
Keyword(s):  
Wind Tunnel ◽  
Turbulent Flow ◽  
Two Dimensional ◽  
Wind Tunnel Study

scholarly journals A Wind Tunnel Study of Turbulent Flow over Double Steep Hills

2004 ◽  
Vol 29 (1) ◽  
pp. 98_105-98_115 ◽  
Author(s):  
Koji MINAMI ◽  
Susumu OIKAWA ◽  
Yasuo HATTORI ◽  
Ikuo URUSHIHARA ◽  
Takeshi ISHIHARA ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
Turbulent Flow ◽  
Wind Tunnel Study

A wind tunnel study of turbulent flow over model hills

1989 ◽  
Vol 49 (1-2) ◽  
pp. 113-148 ◽  
Author(s):  
Wanmin Gong ◽  
Alan Ibbetson
Keyword(s):  
Wind Tunnel ◽  
Turbulent Flow ◽  
Wind Tunnel Study

Wind tunnel study of long-span suspension bridge under smooth and turbulent flow

1990 ◽  
Vol 33 (1-2) ◽  
pp. 313-322 ◽  
Author(s):  
Yozo Fujino ◽  
Manabu Ito ◽  
Izumi Shino ◽  
Masami Iwamoto ◽  
Yu-Ichi Hikami ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
Turbulent Flow ◽  
Suspension Bridge ◽  
Long Span ◽  
Wind Tunnel Study
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