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Related Experiment Videos

Nappe oscillations on free-overfall structures, data from laboratory experiments.

Maurine Lodomez1, Blake Tullis2, Pierre Archambeau3

  • 1Hydraulics in Environmental and Civil Engineering (HECE), University of Liège, Liège, Belgium. maurine.lodomez@gmail.com.

Scientific Data
|June 20, 2020
PubMed
Summary

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This study details experimental data on nappe oscillations in free overfall structures. The findings aid in understanding and modeling these hydraulic phenomena.

Area of Science:

  • Fluid mechanics
  • Hydraulic engineering

Background:

  • Nappe oscillation is a complex phenomenon in hydraulic structures.
  • Understanding its occurrence and frequency is crucial for structural integrity and performance.

Purpose of the Study:

  • To present a comprehensive dataset from laboratory experiments on nappe oscillations.
  • To provide data for improving the understanding of nappe oscillation physics.
  • To facilitate the validation of numerical models for nappe oscillation.

Main Methods:

  • Conducted 52 laboratory experiments using linear weir models.
  • Varied geometric parameters (crest shape, width, fall height, confinement) and inflow discharges.
  • Employed image and sound analysis for nappe oscillation characterization.

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Main Results:

  • Collected data on the occurrence of nappe oscillations.
  • Measured associated oscillation frequencies.
  • Documented experimental conditions and geometric parameters.

Conclusions:

  • The generated dataset is valuable for hydraulic research.
  • The data can enhance the comprehension of nappe oscillation mechanisms.
  • The dataset will support the validation of computational fluid dynamics (CFD) models.