Abstract:We performed wind tunnel studies of sand–bed collisions with natural
sand particles and found an impact angle of 10.5o over a loose bed, and
calculated the critical impact velocity (vic ≅ 1.2027 m s-1). The number
of splashing particles (Ns) increased linearly with vi, but the
coefficient of restitution CoR decreased linearly with vi. The momentum
lost through frictional processes αlost was insensitive to vi, with a
value of 0.2466. The mean splash velocity increased with vi for vi
< 7 m s-1, and gradually … Show more
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