Suction Removal of Cohesionless Sediment

Pu Yang, Guorong Wang and Lin Zhong
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Pu Yang: Department of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China
Guorong Wang: Department of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China
Lin Zhong: Department of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China

Energies, 2020, vol. 13, issue 20, 1-11

Abstract: The theoretical analysis of sediment scour in vertical direction caused by a vertical suction inlet is presented here. The predictive formulas of the critical inlet height of particle initial motion and scour depth in equilibrium state are expressed as Froude type relations based on the phenomenological theory of turbulence and the momentum transfer hypothesis between fluid and grain. The experimental data of the literature shows good consistency with the theoretical relationship, and the physical mechanism is clear. In addition, the discussion for the applicability of the predictive formula in an extensive range of Reynolds numbers reveals that the sediment incipient motion can be excellently explained by the energy spectrum of the phenomenological theory. Then the theoretical errors in different flow regions are investigated. The research presents universal relevance and reference value for similar research and application.

Keywords: hydraulic suction; cohesionless sediment scour; scour depth (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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