Title :
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
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;
Conference_Titel :
Oceans - San Diego, 2013
Conference_Location :
San Diego, CA
