A Canopy Flow Equation for Erosion Control Geosynthetics. Issue 3 (1st January 2001)

• Record Type: Journal Article
• Authors: Hytiris, N.; Addison, P.S.; McKay, D.J.
• Is Part Of: Geosynthetics international. Volume 8:Issue 3(2001)
• Page Start: 221
• Page End: 232
• Publication Date: 2001-01-01
• Subjects: Velocity distribution profile; -- Erosion control; -- Log-law; -- Hydraulic; -- Canopy flow; -- Roughness coefficient; -- Geomat; -- Laser Doppler anemometery; Geosynthetics -- Periodicals; Geosynthetics; Periodicals; 624.1892
• DOI: 10.1680/gein.8.0193
• Languages: English
• ISSNs: 1072-6349

Abstract

Abstract : A novel experimental test programme for erosion control geosynthetic mattings, i.e., geomats, is described. Using a laser Doppler anemometer, the velocities have been examined within the flow field at the fluid-geomat interface. Initial analysis of the test results has lead to a modified log-law equation for the downstream flow velocities above the geomat. This equation has the same form as canopy flow equations used in meteorology to describe the velocity profiles above vegetative canopies in the atmospheric boundary layer. The canopy flow equation for erosion control geotextiles is discussed herein.