Accuracy of Equivalent Roughness Height Formulas in Practical Applications

Benoit Camenen, Magnus Larson

Research output: Contribution to journalArticlepeer-review

Abstract

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.
Original languageEnglish
Pages (from-to)331-335
JournalJournal of Hydraulic Engineering
Volume139
Issue number3
DOIs
Publication statusPublished - 2013

Subject classification (UKÄ)

  • Water Engineering

Free keywords

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

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