Direct measurement of bed shear stress using adjustable shear plate over a wide range of Froude numbers

Jae Hyeon Park, Young Do Kim (Lead / Corresponding author), Yong Sung Park, Dong Gyu Jung

Research output: Contribution to journalArticle

1 Citation (Scopus)
17 Downloads (Pure)

Abstract

The objective of this study is to extend reliability and applicability of the advanced measuring device for bottom shear stress introduced in the previous paper (Park et al., 2016) so that it could be deployed in the field. The high-speed open-channel flume used for the previous study has been renovated to accommodate even higher flow velocity (up to 6 m s−1). Then we adapted a non-intrusive velocity field measurement technique to such challenging flow conditions of interest. The specific experimental conditions required high degree of adaptation and subsequent development of analysis technique. The experimental results are used to reliably estimate bottom shear stress which is then compared to the measured value using the shear plate. It is shown that the shear plate can be applied to wide range of flow conditions by adjusting elastic shear modulus of the restoring mechanism.

Original languageEnglish
Pages (from-to)122-127
Number of pages6
JournalFlow Measurement and Instrumentation
Volume65
Early online date26 Nov 2018
DOIs
Publication statusPublished - Mar 2019

Keywords

  • Adjusting elastic shear modulus
  • Bottom shear stress
  • High-speed flume
  • Shear plate
  • Velocity field measurement

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