Nonlinear dynamic pressure beneath waves in water of intermediate depth: Theory and experiment

Publikationstyp
Journal Article
Date Issued
2022-02-22
Sprache
English
Author(s)
Slunyaev, Alexey  
Kokorina, A. V.  
Klein, Marco  orcid-logo
Institut
Strukturdynamik M-14  
TORE-URI
http://hdl.handle.net/11420/12113
Journal
European journal of mechanics. B, Fluids  
Volume
94
Start Page
155
End Page
170
Citation
European Journal of Mechanics, B/Fluids 94: 155-170 (2022-07-01)
Publisher DOI
10.1016/j.euromechflu.2022.02.007
Scopus ID
2-s2.0-85126590702
Publisher
Gauthier-Villars
The data of simultaneous measurements of the surface displacement produced by propagating planar waves in experimental flume and of the dynamic pressure beneath the waves are compared with the theoretical predictions based on different approximations for modulated potential gravity waves. Regular and irregular wave sequences in intermediate depths are considered. The efficiency of different models for reconstruction the pressure field from the known surface displacement time series (the direct problem) is investigated. A new two-component theory for weakly modulated weakly nonlinear waves is proposed showing the best performance among all applied models. Peculiarities of the vertical mode of the pressure second harmonic are discussed.
Subjects
Bottom pressure
Dynamic pressure
Nonlinear asymptotic theory
Nonlinear water waves
DDC Class
600: Technik
More Funding Information
The work was supported by the state contract No 0030-2021-0007 (AVS) and by the RFBR projects 19-55-15005 and 20-05-00162 (AVK)