Rising Hydrograph for Converging Kinematic Wave Flow
Publication: Journal of Irrigation and Drainage Engineering
Volume 142, Issue 10
Abstract
Crossing culverts under highways that run through an alluvial fan is a typical converging kinematic wave flow. Design of such a crossing culvert requires the estimation of peak flow for the selected level of protection. In this paper, it was assumed that the converging kinematic wave flows on the rising hydrograph would move at the constant speed determined by the equilibrium flow depth. The derivation of the analytical solution to predict the rising hydrograph from a given converging culvert entrance is achieved. The simplified analytical solution was further compared with the numerical solutions for several case studies. It was found that the peak flow depends on the rainfall intensity, time of concentration, and location of the culvert entrance on the converging geometry. Although the rising hydrograph does not represent the complete the kinematic wave flow, it does improve the current design methods for the highway crossing culverts under highways through alluvial fans.
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Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 142 • Issue 10 • October 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Oct 19, 2015
Accepted: Mar 14, 2016
Published online: Jun 6, 2016
Published in print: Oct 1, 2016
Discussion open until: Nov 6, 2016
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