Velocity Distribution in Channels with Submerged Vegetation

An experimental study is presented for investigating the effect of vegetation element geometry on velocity distribution within and above canopy. Three types artificial submerged elements with common parts different foliage are used, two density patterns each. Detailed profiles obtained compared at nine locations in array. The canopy found to closely follow a logarithmic law its parameters, namely shear u*, zero-plane displacement height d roughness z0 determined. These depend type element, but also particular position A unified over water column appropriate case stems no cases compound certain positions array not those where locally minimum values occur level. Moreover, profile upper layer seen fit well measured velocities extent below top