Access the full text.
Sign up today, get DeepDyve free for 14 days.
K. Flack, M. Schultz, Thomas Shapiro (2005)
Experimental support for Townsend’s Reynolds number similarity hypothesis on rough wallsPhysics of Fluids, 17
R. Antonia, L. Djenidi (2010)
On the outer layer controversy for a turbulent boundary layer over a rough wall | NOVA. The University of Newcastle's Digital Repository
I. Castro, Hong Cheng, R. Reynolds (2006)
Turbulence Over Urban-type Roughness: Deductions from Wind-tunnel MeasurementsBoundary-Layer Meteorology, 118
H. Nepf, E. Vivoni (2000)
Flow structure in depth-limited, vegetated flowJournal of Geophysical Research, 105
A. Fincham, G. Delerce (2000)
Advanced optimization of correlation imaging velocimetry algorithmsExperiments in Fluids, 29
A. Fincham, G. Spedding (1997)
Low cost, high resolution DPIV for measurement of turbulent fluid flowExperiments in Fluids, 23
K. Christensen, K. Christensen (2004)
The influence of peak-locking errors on turbulence statistics computed from PIV ensemblesExperiments in Fluids, 36
E. Florens (2010)
Couche limite turbulente dans les écoulements à surface libre : étude expérimentale d'effets de macro-rugosités
(1985)
Experimental study on secondary currents in open channel flow
I. Castro (2007)
Rough-wall boundary layers: mean flow universalityJournal of Fluid Mechanics, 585
I Nezu, H Nakagawa (1993)
Turbulence in open-channel flows. IAHR Monograph series
P. Bradshaw (2000)
A note on “critical roughness height” and “transitional roughness”Physics of Fluids, 12
R. Reynolds, I. Castro (2008)
Measurements in an urban-type boundary layerExperiments in Fluids, 45
D. Pokrajac, L. Campbell, V. Nikora, C. Manes, I. McEwan (2007)
Quadrant analysis of persistent spatial velocity perturbations over square-bar roughnessExperiments in Fluids, 42
O. Coceal, S. Belcher (2004)
A canopy model of mean winds through urban areasQuarterly Journal of the Royal Meteorological Society, 130
M. Bottema (1996)
Roughness parameters over regular rough surfaces: Experimental requirements and model validationJournal of Wind Engineering and Industrial Aerodynamics, 64
O. Coceal, T. Thomas, I. Castro, S. Belcher (2006)
Mean Flow and Turbulence Statistics Over Groups of Urban-like Cubical ObstaclesBoundary-Layer Meteorology, 121
C. Manes, D. Pokrajac, I. McEwan (2007)
Double-Averaged Open-Channel Flows with Small Relative SubmergenceJournal of Hydraulic Engineering, 133
E. Mignot, E. Barthélemy, D. Hurther (2009)
Double-averaging analysis and local flow characterization of near-bed turbulence in gravel-bed channel flowsJournal of Fluid Mechanics, 618
S. Tomas, O. Eiff, V. Masson (2011)
Experimental investigation of the turbulent momentum transfers in a neutral boundary layer over a rough surface
J Piersol (2000)
Random Data Analysis and Measurement ProceduresMeasurement Science and Technology, 11
D. Birch, J. Morrison (2010)
Similarity of the streamwise velocity component in very-rough-wall channel flowJournal of Fluid Mechanics, 668
M. Amir, I. Castro (2011)
Turbulence in rough-wall boundary layers: universality issuesExperiments in Fluids, 51
M. Rotach (2001)
Simulation Of Urban-Scale Dispersion Using A Lagrangian Stochastic Dispersion ModelBoundary-Layer Meteorology, 99
J. Jiménez (2004)
Turbulent flows over rough wallsAnnual Review of Fluid Mechanics, 36
Hong Cheng, I. Castro (2002)
Near Wall Flow over Urban-like RoughnessBoundary-Layer Meteorology, 104
D. Poggi, G. Katul, J. Albertson (2004)
A Note On The Contribution Of Dispersive Fluxes To Momentum Transfer Within CanopiesBoundary-Layer Meteorology, 111
Jiarong Hong, J. Katz, M. Schultz (2011)
Near-wall turbulence statistics and flow structures over three-dimensional roughness in a turbulent channel flowJournal of Fluid Mechanics, 667
M. Raupach, R. Shaw (1982)
Averaging procedures for flow within vegetation canopiesBoundary-Layer Meteorology, 22
M. Rotach (1999)
On the influence of the urban roughness sublayer on turbulence and dispersionAtmospheric Environment, 33
V. Nikora, I. McEwan, S. Mclean, S. Coleman, D. Pokrajac, R. Walters (2007)
Double-Averaging Concept for Rough-Bed Open-Channel and Overland Flows: Theoretical BackgroundJournal of Hydraulic Engineering, 133
V. Nikora, D. Goring, I. McEwan, G. Griffiths (2001)
Spatially Averaged Open-Channel Flow over Rough BedJournal of Hydraulic Engineering, 127
M. Raupach, A. Thom, I. Edwards (1980)
A wind-tunnel study of turbulent flow close to regularly arrayed rough surfacesBoundary-Layer Meteorology, 18
D. Poggi, A. Porporato, L. Ridolfi, J. Albertson, G. Katul (2004)
The Effect of Vegetation Density on Canopy Sub-Layer TurbulenceBoundary-Layer Meteorology, 111
John Kim (2004)
Rough-Wall Turbulent Boundary Layers
中川 博次, 禰津 家久 (1993)
Turbulence in open-channel flows
(2006)
Effect of wall-bounded disturbances on turbulent channel flows
R. Britter, S. Hanna (2003)
FLOW AND DISPERSION IN URBAN AREASAnnual Review of Fluid Mechanics, 35
R. Macdonald (2000)
Modelling The Mean Velocity Profile In The Urban Canopy LayerBoundary-Layer Meteorology, 97
J. Finnigan (2000)
Turbulence in plant canopiesAnnual Review of Fluid Mechanics, 32
The roughness sublayer in a turbulent open-channel flow over a very rough wall is investigated experimentally both within the canopy and above using particle image velocimetry by gaining complete optical access with new methodologies without disturbing the flow. This enabled reliable estimates of the double-averaged mean and turbulence profiles to be obtained by minimizing and quantifying the usual errors introduced by limited temporal and spatial sampling. It is shown, for example, that poor spatial sampling can lead to erroneous vertical profiles in the roughness sublayer. Then, in order to better define and determine the roughness sublayer height, a methodology based on the measured spatial dispersion is proposed which takes into account temporal sampling errors. The results reveal values well below the usual more ad hoc estimates for all statistics. Finally, the double-averaged mean and turbulence statistics in the roughness sublayer are discussed.
Experiments in Fluids – Springer Journals
Published: Apr 10, 2013
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.