Determination of Form Friction Factor
Publication: Journal of Hydrologic Engineering
Volume 15, Issue 3
Abstract
Friction factor plays a fundamental role in hydraulic analysis and design. In coarse-bed rivers friction factor depends on grain size and bed forms. Considering boundary-layer characteristics, this study first determines the total friction factor in gravel-bed rivers with bed forms. Then it determines the grain friction factor by the Keulegan and the Shields parameter methods and compares these methods. Finally it determines the form friction factor by subtracting the grain friction factor from the total friction factor. Field observations are employed to test the methods.
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Information & Authors
Information
Published In
Journal of Hydrologic Engineering
Volume 15 • Issue 3 • March 2010
Pages: 237 - 243
Copyright
© 2010 ASCE.
History
Received: Mar 3, 2009
Accepted: Aug 19, 2009
Published online: Aug 24, 2009
Published in print: Mar 2010
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