Second-order wavemaker theory for multidirectional waves |
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Authors: | HA SchäfferCM Steenberg |
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Institution: | DHI Water & Environment, Agern Allé 11, DK-2970 Hørsholm, Denmark |
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Abstract: | The present paper develops the complete second-order wavemaker theory for the generation of multidirectional waves in a semi-infinite basin. The theory includes superharmonics and subharmonics and is valid for a rotational as well as a translatory serpent-type wave-board motion. The primary goal is to obtain the second-order motion of the wave paddles required to get a prescribed multidirectional irregular wave field correct to second order, i.e. to suppress spurious free-wave generation. The wavemaker theory is a 3D extension of the full second-order wavemaker theory for wave flumes by Schäffer (1996). |
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Keywords: | Wave generation Wavemaker Second order Stokes theory Evanescent modes Multidirectional waves Short-crested waves Superharmonics Subharmonics |
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