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just add some comments regarding the DVD surface boundary condition #647

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just add some comments regarding the DVD surface boundary condition #647

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11 changes: 10 additions & 1 deletion src/gen_modules_diag.F90
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Expand Up @@ -3124,11 +3124,20 @@ subroutine dvd_add_difflux_sbc(do_SDdvd, tr_num, dvd_tot, tr, trstar, partit, me

!_______________________________________________________________________
! apply apply surface boundarie condition
! SBC_dvd = -2*T_k*Qflx - 2*T_k*T_w * W * kron_1k + T_k^2 * W *kron_1k
! = -2*T_k*Qflx + ((T_k - T_w)^2 - T_w^2) *W * kron_1k
!
! temp: T_w=T_k, ((T_k - T_w)^2 - T_w^2) = -T_k^2
! -->SBC_dvd = -2*T_k (Qflx + 0.5*T_k*W)
!
! salt: T_w=0 , ((T_k - T_w)^2 - T_w^2) = T_k^2
! -->SBC_dvd = -2*T_k (Qflx - 0.5*T_k*W)
!
nz = nu1
if (tr_num==1) then
sbc = -(heat_flux(node)/vcpw + tr(nz, node)*water_flux(node)*is_nonlinfs*0.5_WP)
elseif (tr_num==2) then
sbc = (virtual_salt(node) + relax_salt(node) - (real_salt_flux(node) - tr(nz, node)*water_flux(node)*0.5_WP)*is_nonlinfs)
sbc = (virtual_salt(node) + relax_salt(node) - (real_salt_flux(node) - tr(nz, node)*water_flux(node)*0.5_WP)*is_nonlinfs)
end if
Dflx(nz) = Dflx(nz) + sbc*area(nz, node)

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