Excitation of Initial Waves by Wind: A Theoretical Model and Its Experimental Verification

Meital Geva, Lev Shemer*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We present a theory of evolution of wind waves in time and space under abruptly applied wind forcing that is experimentally validated in a laboratory wind-wave tank. The model describes qualitatively and quantitatively the complex wave field development from the initial smooth surface to the finite state. The stochastic nature of wind waves is treated by considering an ensemble of coexisting unstable harmonics that grow due to shear flow instability. Breaking limits the wave growth initially; the process is then controlled by fetch-limited growth duration.

Original languageEnglish
Article number124501
JournalPhysical Review Letters
Volume128
Issue number12
DOIs
StatePublished - 25 Mar 2022

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