Spectral technique for generating gaussian wave packets

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Do, Tien, Lleonart, Geoffrey T and Rouillard, Vincent (2004) Spectral technique for generating gaussian wave packets. Journal of waterway, port, coastal and ocean engineering, 130 (2). pp. 104-108. ISSN 0733-950x

Abstract

This paper deals with the development of a spectral feedback control technique capable of generating precise Gaussian wave packets and incipient breaking waves at predetermined locations in a laboratory wave flume. The design of the system includes the development of algorithms to generate the mathematical equations that define the wave packets and the spectral control algorithm for continuously correcting the system frequency response characteristics. Descriptions of the mathematical model of the Gaussian wave packets and their corresponding frequency spectra are given, along with the procedure used for spectral feedback compensation, especially with regard to handling the phase. The results of comparing wave packets generated by open and closed loop control systems are discussed. Experimental results are also used to demonstrate the adequacy of the spectral feedback technique to accurately generate particular Gaussian wave packets with particular emphasis on the important role played by the phase in reconstruction of transient signals. In addition, a method for generating breaking waves is explained and the results of experiments presented. Using the technique developed, resultant breaking wave packets of similar shape can be repeatedly produced at a predetermined location along the flume.

Item type Article
URI http://vuir.vu.edu.au/id/eprint/1082
Identification Number https://doi.org/10.1061/(ASCE)0733-950X(2004)130:2(104)
Official URL http://dx.doi.org/10.1061/(ASCE)0733-950X(2004)130...
Subjects Historical > RFCD Classification > 290000 Engineering and Technology
Current > FOR Classification > 0913 Mechanical Engineering
Historical > Faculty/School/Research Centre/Department > School of Engineering and Science
Keywords spectral analysis, gaussian process, feedback control, breaking waves, flumes, wave packets, spectrum analysis, spectral sensitivity
Citations in Scopus 5 - View on Scopus
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