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ice_dyn_shared: add 'viscous_coeffs_and_rep_pressure_T' subroutine #3

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Nov 16, 2021
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ice_dyn_shared: add 'viscous_coeffs_and_rep_pressure_T' subroutine #3

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57 changes: 57 additions & 0 deletions cicecore/cicedynB/dynamics/ice_dyn_shared.F90
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Expand Up @@ -1507,6 +1507,63 @@ subroutine viscous_coeffs_and_rep_pressure (strength, tinyarea, &

end subroutine viscous_coeffs_and_rep_pressure


!=======================================================================
! Computes viscous coefficients and replacement pressure for stress
! calculations. Note that tensile strength is included here.
!
! Hibler, W. D. (1979). A dynamic thermodynamic sea ice model. J. Phys.
! Oceanogr., 9, 817-846.
!
! Konig Beatty, C. and Holland, D. M. (2010). Modeling landfast ice by
! adding tensile strength. J. Phys. Oceanogr. 40, 185-198.
!
! Lemieux, J. F. et al. (2016). Improving the simulation of landfast ice
! by combining tensile strength and a parameterization for grounded ridges.
! J. Geophys. Res. Oceans, 121, 7354-7368.

subroutine viscous_coeffs_and_rep_pressure_T (strength, tinyarea, &
Delta , zetax2 , &
etax2 , rep_prs , &
capping)

real (kind=dbl_kind), intent(in):: &
strength, tinyarea

real (kind=dbl_kind), intent(in):: &
Delta

logical, intent(in):: capping

real (kind=dbl_kind), intent(out):: &
zetax2, etax2, rep_prs ! 2 x visous coeffs, replacement pressure

! local variables
real (kind=dbl_kind) :: &
tmpcalc

character(len=*), parameter :: subname = '(viscous_coeffs_and_rep_pressure_T)'

! NOTE: for comp. efficiency 2 x zeta and 2 x eta are used in the code

! if (trim(yield_curve) == 'ellipse') then

if (capping) then
tmpcalc = strength/max(Delta,tinyarea)
else
tmpcalc = strength/(Delta + tinyarea)
endif

zetax2 = (c1+Ktens)*tmpcalc
rep_prs = (c1-Ktens)*tmpcalc*Delta
etax2 = epp2i*zetax2

! else

! endif

end subroutine viscous_coeffs_and_rep_pressure_T

!=======================================================================

! Load velocity components into array for boundary updates
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