Turbulence of a free surface

R. Savelsberg, W. Water, van de

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

23 Citaten (Scopus)
112 Downloads (Pure)


We study the free surface of a turbulent channel flow, in particular, the relation between the statistical properties of the wrinkled surface and those of the velocity field beneath it. For an irregular flow shed off a vertical cylinder, surface indentations are strongly correlated with vortices in the subsurface flow. For fully developed turbulence this correlation is dramatically reduced. This is because the large eddies excite random capillary-gravity waves that travel in all directions across the surface. Both their predominant wavelength and their anisotropy are determined by the subsurface turbulence.
Originele taal-2Engels
Pagina's (van-tot)034501-1/4
TijdschriftPhysical Review Letters
Nummer van het tijdschrift3
StatusGepubliceerd - 2008

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