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Flow resistance in sinuous or irregular channels

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Flow resistance in sinuous or irregular channels; 1960; PP; 282-D; Leopold, L. B.; Bagnold, R. A.; Wolman, M. G.; Brush, L. M., Jr.

Summary

The resistance to fully developed turbulent flow at constant depth in an open channel increases as the square of the mean velocity as long as the boundary conditions remain completely unchanged. The presence of the free water surface allows the possibility of departure from the relationship of resistance to the square of the velocity. Experimental evidence is given, which is in quantitative agreement with fluid dynamic theory, that such departure may be abrupt, with a marked increase of resistance. These departures are observed under conditions of boundary and flow which occur commonly in natural rivers.It is shown that the condition under which this discontinuous increase in resistance occurs is definable by the mean Froude number [...]

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Type Scheme Key
local-index unknown pp282D
local-pk unknown 39742
series unknown Professional Paper

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journalProfessional Paper
parts
typePublication Place
valueWashington, D.C.
edition111
languageEnglish
citationTypeReport

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