Local Scour Potential for Large Bed Material with Shallow Tailwater Depth

by Kwang-Ik Son, Water Resources Research Inst, Taejon, Republic of Korea,
Gilberto E. Urroz, Water Resources Research Inst, Taejon, Republic of Korea,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

Jet momentum acting on a bed particle and submerged jet diffusion theory were employed to derive scour prediction formulas in a plunge pool. Semi-theoretical formulas were suggested for the two regions of jet diffusion, i.e., the region of flow establishment and the established flow. Each region of jet diffusion has two equations, and the application of these two equations depends upon the ratio of jet size to bed material size.

Subject Headings: Scour | Bed materials | River and stream beds | Diffusion (fluid) | Diffusion | Tailwater | Sediment transport

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