Sidewall and non-uniformity corrections for flume experiments

Research output: Contribution to journalReview article

7 Citations (Scopus)

Abstract

Studying open channel flow and sediment transport in narrow flumes under non-uniform flow conditions, both sidewall and non-uniformity corrections are required for bed-shear stress. This research first reviews conventional predictive methods for bed-shear stress, including the flow-depth method, the hydraulic radius method and Einstein's sidewall correction. It then presents a novel procedure for sidewall and non-uniformity corrections based on a recent cross-sectional velocity distribution model. These methods are compared with data from the log-law under uniform and non-uniform, sub- and supercritical flow conditions, indicating that (i) the flow-depth and the hydraulic radius methods specify the upper and lower bounds for bed-shear stress; (ii) although Einstein's procedure causes a paradox for smooth flumes, it agrees with data from rough beds; and (iii) the proposed is better than Einstein's for subcritical flow, but the latter has advantage for supercritical flow. As an application, sediment inception under non-uniform flow conditions is also discussed.

Original languageEnglish (US)
Pages (from-to)218-229
Number of pages12
JournalJournal of Hydraulic Research
Volume53
Issue number2
DOIs
StatePublished - Mar 4 2015

Fingerprint

flume experiment
Shear stress
bottom stress
shear stress
supercritical flow
Hydraulics
Open channel flow
Sediment transport
Experiments
Velocity distribution
Sediments
hydraulics
open channel flow
sediment transport
method
sediment

Keywords

  • Bed-shear stress
  • Einstein's procedure
  • flume experiment
  • non-uniform flow
  • sidewall correction

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Water Science and Technology

Cite this

Sidewall and non-uniformity corrections for flume experiments. / Guo, Junke.

In: Journal of Hydraulic Research, Vol. 53, No. 2, 04.03.2015, p. 218-229.

Research output: Contribution to journalReview article

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