The GYRE Forums

Hello,

I am currently attempting to recreate Figure 2 from Sun, Townsend, & Guo (2023). In the paper, it is stated that, in the figure, the tidal forcing frequency σ is treated as a free parameter as opposed to being restricted by equation E26 within that paper. I am struggling to find out how this treatment of σ can be accomplished using gyre_tides. Does anyone know how I can do this?

Regards,
Cayden Peters

Hi Cayden --

Good question -- this is little buried in the docs, but the way to do this is using the alpha_frq parameter of the &tide namelist group. The inertial-frame forcing frequency used in gyre_tides is

sigma = alpha_frq * k * Omega_orb

...where Omega_orb is the orbital frequency and k the harmonic index.

cheers,

Rich