Comparison of bed shear stress in plane and curvilinear bed channel using multiple criteria

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• 作者：Varsha Shivpure ; Anurag Sharm ; Bimlesh Kumar
• 关键词：bed shear stress ; curvilinear bed ; plane bed ; Reynolds stresses ; shear velocity
• 刊名：Water Resources
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：43
• 期：1
• 页码：79-85
• 全文大小：570 KB
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• 作者单位：Varsha Shivpure (1)
  Anurag Sharm (1)
  Bimlesh Kumar (1)
  
  1. Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati, India
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Hydrogeology
  Waste Water Technology, Water Pollution Control, Water Management and Aquatic Pollution
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1608-344X

文摘

Experimental investigation on fluvial hydraulics needs a correct and accurate estimation of bed shear stress, which governs the hydrodynamics of the sediment transport. Present work compares bed shear stress estimated from the reach-averaged bed shear stress, Log profile, Quadratic stress law, Prandtl’s seventh power law, Reynolds shear stress, turbulent kinetic energy and graphical method approaches by doing experimentation on plane bed and curvilinear bed channel. On plane bed condition, the bed shear estimated from Reynolds stresses and Graphical methods are comparable to the reach-averaged bed shear stress (the difference is within 10%). However, all approaches estimate approximately less than 10% from reach-averaged bed shear stress in curvilinear bed channel. Keywords bed shear stress curvilinear bed plane bed Reynolds stresses shear velocity