Varying mixing efficiency

Question

Hi

I've being having a small problem with mild over mixing. I've played around with varying the wind drag coefficient and the heating coefficient but i can't seem to get it right. Is there a more direct way to change the mixing efficiency? 

Any help would be greatly appreciated

David

Answer 1

Hi David,  there are some undocumented coefficients you can modify these are (with the defaults)

mixing_coeff_ce    = 1.15 ! Ce=dissipation
mixing_coeff_cs    = 0.15 ! Cs=shear
mixing_coeff_cn    = 1.33 ! Cn=wind stirring
mixing_coeff_cc    = 0.2  ! Cc=convective
mixing_coeff_cb    = 2.2  ! Cb=btm generation
mixing_coeff_ct    = 50.0 ! Ct=mixing time coeff
mixing_coeff_cct   = 1.0  ! Cct=Convective overturning time coefficient

Just add these keys to your run_aem3d.dat to modify them.

Chris