Derivation of a Stability Principle from the Shields Criterion

by Majid Ghaboosi, Simons & Associates Inc, United States,
Daryl B. Simons, Simons & Associates Inc, United States,
Robert K. Simons, Simons & Associates Inc, United States,



Document Type: Proceeding Paper

Part of: Sediment Transport Modeling

Abstract:

The widely used specific energy equation, which defines the subcritical and supercritical states of the open channel flow, is a direct result of the integration of the Froude number corresponding to the critical state. In an analogous way, integration of the Shields expression corresponding to the critical condition should provide a general guide in characterizing the stable and unstable states of a sediment particle. It is the purpose of this work to integrate the Shields expression corresponding to the critical condition with respect to the particle resistance and develop a new perspective to analyze the stability of the sediment particle. Subjects covered include stability criteria, integration of the shields expression, and applications.

Subject Headings: Sediment transport | Particles | Equations of motion | Shear stress | Sediment | Open channel flow | Hydraulics

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