Routing Comparisons in Natural and Geometric Channelsby Larry M. Younkin, (M.ASCE), Bucknell Univ, Lewisburg, PA, USA,
William H. Merkel, Bucknell Univ, Lewisburg, PA, USA,
Abstract: A method of establishing composite geometric cross section shapes hydraulically similar to natural cross sections with flood plains is proposed. The method is based on the nondimensionalized St. Venant equations. The concept was tested by comparison of flood routing results for a range of conditions in twelve natural and their similar geometric cross sections. Average errors for area and discharge were found to be less than one percent for most of the 205 test pairs.
Subject Headings: Flood routing | Geometrics | Flood plains | Comparative studies | Hydrologic models | Channel flow | Hydraulic models | Composite materials
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