Direct simulations of breaking ocean waves with data assimilation

Author

Dommermuth, Douglas G. ; Rhymes, Lucas E. ; Rottman, James W.

Author_Institution

Sci. Applic. Int. Corp., San Diego, CA, USA

fYear

2013

fDate

23-27 Sept. 2013

Firstpage

1

Lastpage

10

Abstract

The Numerical Flow Analysis (NFA) code is modified to assimilate data from lower bandwidth High-Order Spectral (HOS) simulations. NFA is a Cartesian-based LES code with Volume of Fluid (VOF) interface capturing. HOS is used to nudge the lowest wavenumber content in the NFA assimilation, and the highest wavenumbers are estimated to investigate the effects of wave nonlinearity and wave breaking. The formulation can be generalized to assimilate radar measurements of the ocean surface.

Keywords

data assimilation; ocean waves; Cartesian-based LES code; HOS simulation; NFA assimilation; NFA code; VOF interface capturing; data assimilation; generalized formulation; highest wavenumbers; lower bandwidth high-order spectral simulation; lowest wavenumber content; numerical flow analysis code; ocean surface radar measurement assimilation; ocean wave breaking direct simulations; volume of fluid interface capturing; wave breaking effect; wave nonlinearity effect; Data assimilation; Equations; Mathematical model; Numerical models; Sea surface; Surface waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Oceans - San Diego, 2013

Conference_Location

San Diego, CA

Type

conf

Filename

6741020