setGeostrophicModes

set amplitudes of the given geostrophic modes

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Declaration

 [k,l] = setGeostrophicModes(self)

Parameters

• kMode integer index, (kMode > -Nx/2 && kMode < Nx/2)
• lMode integer index, (lMode > -Ny/2 && lMode < Ny/2)
• j integer index, (j >= 1 && j <= nModes), unless k=l=j=0
• phi (optional) phase in radians, (0 <= phi <= 2*pi), default 0
• u fluid velocity u (m/s)

Returns

• k wavenumber k of the kModes (radians/m)
• l wavenumber l of the lModes (radians/m)

Discussion

Set the amplitude of the given geostrophic modes by overwriting any existing amplitudes. The parameters are given as horizontal and vertical modes, and the function will return the associated horizontal wavenumbers of those modes.

For example,

  wvt.addGeostrophicModes(kMode=0,lMode=1,jMode=1,u=0.5);

will add a geostrophic mode.