Generation mechanism of bed wave in a sand-bed channel |
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Authors: | A G Petrov I I Potapov |
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Institution: | 1.Institute of Applied Mechanics,Moscow,Russia;2.Computing Center, Far East Division,Russian Academy of Sciences,Khabarovsk,Russia |
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Abstract: | The previously proposed theory of bed load motion by fluid flow is developed. A plane system of equations for bed perturbations
is obtained using a formula for the sediment transport rate which takes into account the effect of free-surface perturbations
on sediment transport and is extended to the two-dimensional case. Dependences of the lengths and velocities of longitudinal
and transverse waves with the most rapidly increasing amplitude on Froude number are determined. The effect of macroturbulent
viscosity and surface waves on the generation of bed waves is determined. |
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Keywords: | |
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