A note on momentum transfer above very rough surfaces

✍ Scribed by P. J. Mulhearn

• Book ID: 104575224
• Publisher: John Wiley and Sons
• Year: 1979
• Tongue: English
• Weight: 199 KB
• Volume: 105
• Category: Article
• ISSN: 0035-9009
• DOI: 10.1002/qj.49710544515

✦ Synopsis

Abstract

Data from wind tunnel experiments on the deviations from unity of the non‐dimensional velocity gradient, Φ~M~ = (kz/u~*~)(δU/δz), close to very rough surfaces are reviewed and compared with field data discussed by J. R. Garratt. It is found for z/z~0~ < 10^2^ that Φ~M~ < 1 in field data and > 1 in the wind tunnel experiments. This difference is discussed tentatively in terms of roughness element flexibility and porosity.