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GENERAL SOLUTIONS FOR VISCOPLASTIC DEBRIS FLOW.

Journal of Hydraulic Engineering

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Abstract

Theoretical velocity profile and theoretical pressure and concentration distributions for (steady) uniform debris flow in wide channels are derived from a generalized viscoplastic fluid (GVF) model without imposing R. A. Bagnold's assumption of constant grain concentration. Good agreement between the theoretical velocity profile and the experimental data of Japanese scientists strongly supports the validity of both the GVF model and the proposed method of solution from the model. It is shown that both E. C. Bingham and Bagnold versions (or submodels) of the GVF model can be used to simulate debris flow at the dynamic state. Although Bagnold's dilatant submodel appears to fit the Japanese data better than the Bingham submodel for flow of noncohesive grains, the choice between them is by no means clear-cut.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
GENERAL SOLUTIONS FOR VISCOPLASTIC DEBRIS FLOW.
Series title:
Journal of Hydraulic Engineering
Volume
114
Issue:
3
Year Published:
1988
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Hydraulic Engineering
First page:
259
Last page:
282