DESIGN OF A POWERFUL AND PORTABLE MULTIDIRECTIONAL WAVEMA
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Keywords

wave generator
wavemaker
multidirectional waves
control system
physical modeling

How to Cite

Cornett, A. M., Laurich, P., Gardeta, E., & Pelletier, D. (2017). DESIGN OF A POWERFUL AND PORTABLE MULTIDIRECTIONAL WAVEMA. Coastal Engineering Proceedings, 1(35), structures.29. https://doi.org/10.9753/icce.v35.structures.29

Abstract

A new multidirectional wave generator with 72 independent paddles has been designed, fabricated and commissioned at the National Research Council labs in Ottawa, Canada. The wet-back piston-mode machine is installed in a new 50 m long by 30 m wide rectangular wave basin, where water depths can be varied over the range from 0 m up to 1.3 m. The new machine is believed to be unique in the world in that it combines the power and stroke required to generate multidirectional spectral wave conditions with significant wave heights exceeding 0.4 m together with the modularity and ease of portability required to move the machine quickly and safely to new positions. The new machine can also be sub-divided to form several shorter machines if desired. The new wave generator features lightweight, composite materials, energy efficient regenerative power supplies, state-of-the-art software and control systems, including capabilities for active wave absorption (reflection compensation), second-order wave generation for improved generation of nonlinear sub- and super-harmonics, side-wall reflection, and more. The design of this new directional wavemaker is described and several of the more innovative features are highlighted in this paper.
https://doi.org/10.9753/icce.v35.structures.29
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References

Cornett, A.M., Miles, M.D., 1991. Simulation of Hurricane Seas in a Multidirectional Wave Basin, J. Offshore Mechanics and Arctic Eng., 113:219-227.

Cornett, A.M., Miles, M.D., Pelletier, D., 1995. Measurement and Analysis of Multidirectional Waves Using Free Surface Slopes. Proc. 5th Int. Symp. on Wave Measurement and Analysis (Waves'95), Madrid, Spain.

Dalrymple, R.A., 1989. Directional Wavemaker Theory with Sidewall Reflection. J. Hydraulic Research, 27,1:23-34.

Funke, E.R., Miles, M.D., 1987. Multidirectional Wave Generation with Corner Reflectors, NRC Report TR-HY-021, Ottawa, Canada.

Laurich, P.H., 1994. Active Wave Absorption Using Feedback From a Wave Probe Attached to the Wave Board. NRC Controlled Technical Report IECE-CEP-CTR-012, Ottawa, Canada.

Mansard, E. and Miles, M., 2010. Laboratory Simulation of Waves, in Handbook of Coastal and Ocean Engineering. World Scientific Publishing, pp 1107-1134.

Miles, M.D., 1989. User Guide for GEDAP Version 2.0 Wave Generation Software. NRC Report LM-HY-034, Ottawa, Canada.

Miles, M.D., 1997. GEDAP Users Guide for Windows. NRC Report HYD-TR-021, Ottawa, Canada.

Miles, M.D., 2015. A New Sidewall Reflection Method for Generation of Directional Waves, Report for Akamina Technologies Ltd.

Mitsuyasu, H., 1972. The One-Dimensional Wave Spectra at Limited Fetch. Proc. 13th Int. Conf. on Coastal Engineering.

Nwogu, O., Mansard, E., Miles, M., Isaacson, M., 1987. Estimation of Directional Wave Spectra by the Maximum Entropy Method. Proc. IAHR Seminar on Wave Analysis and Generation in Laboratory Basins, 22nd IAHR Congress, Lausanne, Switzerland, pp. 363-376.

Schäffer, H.A., 1993. Laboratory Wave Generation Correct to Second-Order, Proc. Wave Kinematics and Environmental Forces. Society for Underwater Technologies, London, 29:115-139.

Schäffer, H.A., 1996. Second-Order Wavemaker Theory for Irregular Waves, Ocean Engineering, 23,1:47-88.

Schäffer, H.A., Steenberg, C.M., 2003. Second-Order Wavemaker Theory for Multidirectional Waves, Ocean Engineering, 30:1203-1231.

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