Effect of the surface water content on dry saltation cloud dynamics: A wind tunnel simulation with particle tracking velocimetry
Patrick O'Brien,
Cheryl Mc Kenna Neuman
Abstract:The mass transport rate of wind‐borne particles, and indeed the fluid stress required for their entrainment, is strongly governed by inter‐particle cohesion arising from water retained through adsorption and capillary force. This paper reports on a series of wind tunnel experiments in which high‐speed photography was used to record the motion of dry sand particles as they impinged on test beds of systematically varied target gravimetric pore water content (0% ≤ W ≤ 10%). The wind friction velocity was preset t… Show more
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