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Density stratification effects in sand-bed rivers

Journal of Hydraulic Engineering

By:
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DOI: 10.1061/(ASCE)0733-9429(2004)130:8(783)

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Abstract

In this paper the effects of density stratification in sand-bed rivers are studied by the application of a model of vertical velocity and concentration profiles, coupled through the use of a turbulence closure that retains the buoyancy terms. By making the governing equations dimensionless, it is revealed that the slope is the additional dimensionless parameter introduced by inclusion of the buoyancy terms. The primary new finding is that in general density stratification effects tend to be greater in large, low-slope rivers than in their smaller, steeper brethren. Under high flow conditions the total suspended load and size distribution of suspended sediment can be significantly affected by density stratification, and should be accounted for in any general theory of suspended transport. ?? ASCE.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Density stratification effects in sand-bed rivers
Series title:
Journal of Hydraulic Engineering
DOI:
10.1061/(ASCE)0733-9429(2004)130:8(783)
Volume
130
Issue:
8
Year Published:
2004
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Hydraulic Engineering
First page:
783
Last page:
795
Number of Pages:
13