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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
URI:http://hdl.handle.net/2142/960
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. http://hdl.handle.net/2142/323.


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