Experimental Investigation of the Performance of Tilt Current Meters in Wave-Dominated Flows

Asger Bendix Hansen, Stefan Carstensen

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Abstract

In recent years, tilt current meters (TCMs) have received renewed attention as they provide an inexpensive method for measuring currents in the coastal zone. However, previous studies focused mainly on current dominated flows or the current component of the flow. This study investigates the performance of tilt current meters in wave-dominated flows and capturing the wave orbital velocities. A series of laboratory experiments were performed in which tilt current meters were used to measure flow velocities in pure current, pure wave and combined wave-current flows. Both spherical and cylindrical TCMs were investigated in order to assess the effect of TCM shape on its performance. The measured TCM tilt is compared with the flow velocity measured by conventional methods. Furthermore, the ability of a TCM to measure wave orbital and wave-averaged velocities is discussed.
Original languageEnglish
Title of host publicationProceedings of the 37th IAHR World Congress
PublisherInternational Association for Hydro-Environment Engineering and Research (IAHR)
Publication date2017
Pages5473-5481
Publication statusPublished - 2017
Event37th IAHR World Congress - Kuala Lumpur, Malaysia
Duration: 13 Aug 201718 Aug 2017

Conference

Conference37th IAHR World Congress
CountryMalaysia
CityKuala Lumpur
Period13/08/201718/08/2017

Keywords

  • Tilt current meter
  • Observational techniques
  • Surf zone
  • Coastal hydrodynamics

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