Investigation of statistical parameters of the evolving wind wave field using a laser slope gauge

A. Zavadsky, L. Shemera

Research output: Contribution to journalArticlepeer-review

Abstract

Statistical parameters of water waves generated by wind in a small scale facility are studied using extensively a Laser Slope Gauge (LSG), in addition to conventional measuring instruments such as a wave gauge and Pitot tube. The LSG enables direct measurements of two components of the instantaneous surface slope. Long sampling duration in a relatively small experimental facility allowed accumulating records of the measured parameters containing a large number of waves. Data were accumulated for a range of wind velocities at multiple fetches. Frequency spectra of the surface elevation and of the instantaneous local slope variation measured under identical conditions are compared. Higher moments of the surface slope are presented. Information on thewaves' asymmetry is retrieved from the computed skewness of the surface slope components.

Original languageEnglish
Article number056602
JournalPhysics of Fluids
Volume29
Issue number5
DOIs
StatePublished - 1 May 2017

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