Jet scour | Zendy

G.J.C.M. Hoffmans | Zendy; H.J. Verheij | Zendy

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Jet scour

Author(s) -

G.J.C.M. Hoffmans,

H.J. Verheij

Publication year - 2011

Publication title -

proceedings of the institution of civil engineers - maritime engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.477

H-Index - 21

eISSN - 1751-7737

pISSN - 1741-7597

DOI - 10.1680/maen.2011.164.4.185

Subject(s) - propeller , jet (fluid) , geology , flow (mathematics) , scale (ratio) , mechanics , marine engineering , geotechnical engineering , engineering , physics , quantum mechanics

This paper discusses scour without bed protection, such as propeller scour, two-dimensional horizontal, three-dimensional horizontal scour generated by free jets downstream of gates and outlets, two-dimensional vertical and three-dimensional vertical scour. The flow velocities in two- and three-dimensional propeller and free jets are briefly summarised where special attention is paid to the Dutch and German approaches for calculating the near-bed load caused by propellers. The time scale of propeller scour is approximated by applying the Breusers' time-dependent scour equation. For the maximum scour depth in the equilibrium phase Newton's second law is used.Hydraulic EngineeringCivil Engineering and Geoscience

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