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Accuracy of Equivalent Roughness Height Formulas in Practical Applications

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Author

Summary, in English

This paper presents a discussion on the application and accuracy of roughness height formulas from a practical point of view. Such formulas have been proposed to describe the equivalent roughness height for plane bed conditions on the basis of the Shields parameter. The application of these relationships requires an iterative solution technique. However, as this paper demonstrates, the roughness estimates are not always reliable because the application of the formulas yields large discrepancies in the results. DOI: 10.1061/(ASCE)HY.1943-7900.0000670. (C) 2013 American Society of Civil Engineers.

Publishing year

2013

Language

English

Pages

331-335

Publication/Series

Journal of Hydraulic Engineering

Volume

139

Issue

3

Document type

Journal article

Publisher

American Society of Civil Engineers (ASCE)

Topic

  • Water Engineering

Keywords

  • Roughness height
  • Friction factor
  • Plane bed
  • Sheet flow
  • Experimental
  • data
  • Predictive formula
  • Iterative formula

Status

Published

ISBN/ISSN/Other

  • ISSN: 1943-7900