The magic carpet: an arbitrary spectrum wave maker for internal waves

Thomas E. Dobra, Andrew G. W. Lawrie*, Stuart B. Dalziel

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

3 Citations (Scopus)
105 Downloads (Pure)

Abstract

We present a novel apparatus for generating internal waves of arbitrary size and shape, including both phase-locked and propagating waves. It is an actively driven, flexible “magic carpet” in the base of a tank. Our wave maker is computer-controlled to enable easy configuration. The actuation of a smooth, flexible surface produces clean waveforms with a predictable spectrum, for which we derive a theoretical model. We demonstrate the versatility of our wave maker through an experimental study of linear and nonlinear, isolated, and combined internal waves, including some that are sufficiently nonlinear to break remote from their source.

Original languageEnglish
Article number172
Number of pages14
JournalExperiments in Fluids
Volume60
Issue number11
Early online date29 Oct 2019
DOIs
Publication statusPublished - 1 Nov 2019

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