Summary
A computer model of the saltation cloud is described. Experimental results from high speed films are used to characterise the grain/bed collision. The importance of momentum exchange in determining the number of ejected grains from a collision is demonstrated. The modification of the wind velocity profile is discussed and a realistic wind profile is calculated. Also the mass flux profiles calculated compare well to their expected shape. The model attains a steady state, characterised by a steady wind and a stationary grain population, after roughly 2 seconds. The response of the total mass flux to shear velocity is approximately cubic. Finally, potential uses of the model in studying ripple formation and dust emission are discussed.
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© 1991 Springer-Verlag Wien
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McEwan, I.K., Willetts, B.B. (1991). Numerical model of the saltation cloud. In: Barndorff-Nielsen, O.E., Willetts, B.B. (eds) Aeolian Grain Transport 1. Acta Mechanica Supplementum, vol 1. Springer, Vienna. https://doi.org/10.1007/978-3-7091-6706-9_3
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DOI: https://doi.org/10.1007/978-3-7091-6706-9_3
Publisher Name: Springer, Vienna
Print ISBN: 978-3-211-82269-2
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