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Localized Turbulent Flows on Scouring Granular Beds

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Title: Localized Turbulent Flows on Scouring Granular Beds
Author(s): Gioia, Gustavo; Bombardelli, Fabian A.
Subject(s): Turbulent flow
Abstract: In many applications a sustained, localized turbulent flow scours a cohesionless granular bed to form a pothole. Here we use similarity methods to derive a theoretical formula for the equilibrium depth of the pothole. Whereas the empirical formulas customarily used in applications contain numerous free exponents, the theoretical formula contains a single one, which we show can be determined via the phenomenological theory of turbulence. Our derivation affords insight into how a state of dynamic equilibrium is attained between a granular bed and a localized turbulent flow.
Issue Date: 2005
Publisher: American Physical Society
Citation Info: Gustavo Gioia and Fabian A.Bombardelli. Localized turbulent flows on scouring granular beds, Physical Review Letters, Vol. 95, No.1, 2005, pp. 014501-4.
Genre: Article
Type: Text
Language: English
DOI: 10.1103/PhysRevLett.95.014501
Publication Status: published or submitted for publication
Peer Reviewed: is peer reviewed
Rights Information: Copyright owned by American Physical Society 2005.
Date Available in IDEALS: 2007-06-15
Has Version(s): Previously released as: TAM Report 1065.

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