Chapter
Apr 26, 2012
Theoretical Analyses for Interaction between Vegetation Bending and Flow
Authors: Li Chen and Mark StoneAuthor Affiliations
Publication: World Environmental and Water Resources Congress 2010: Challenges of Change
Abstract
The mechanical response of emergent and submerged aquatic vegetation to hydraulic forces has received considerable attention due to its significant implications for channel design, habitat restoration, and water resources management. Vegetation deflection and rupture is a complicated phenomenon due to the complex interacting processes between flow field characteristics, hydraulic forces, vegetation material properties and physiology, and hydraulic roughness. The objectives of this paper are to advance our understanding of vegetation-flow field interactions by providing an analytical technique for investigating vegetation bending under emergent flow conditions. Both static and dynamic formulations of the problem are presented. The analytical methods presented here can serve as the foundation for applied studies to allow vegetation bending and hence dynamic hydraulic roughness in flood risk investigations.
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© 2010 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Li Chen
Division of Hydrologic Sciences, Desert Research Institute, 755 E. Flamingo Road, Las Vegas, NV, 89119
Mark Stone
Department of Civil Engineering, University of New Mexico, MSC01 1070, Albuquerque, NM, 87131
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