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C $Header: /u/gcmpack/MITgcm/pkg/mom_common/mom_calc_visc.F,v 1.25 2007/07/13 16:36:41 cnh Exp $ |
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C $Name: $ |
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|
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#include "MOM_COMMON_OPTIONS.h" |
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|
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|
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SUBROUTINE MOM_CALC_VISC( |
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I bi,bj,k, |
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O viscAh_Z,viscAh_D,viscA4_Z,viscA4_D, |
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O harmonic,biharmonic,useVariableViscosity, |
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I hDiv,vort3,tension,strain,KE,hFacZ, |
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I myThid) |
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|
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IMPLICIT NONE |
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C |
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C Calculate horizontal viscosities (L is typical grid width) |
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C harmonic viscosity= |
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C viscAh (or viscAhD on div pts and viscAhZ on zeta pts) |
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C +0.25*L**2*viscAhGrid/deltaT |
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C +sqrt((viscC2leith/pi)**6*grad(Vort3)**2 |
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C +(viscC2leithD/pi)**6*grad(hDiv)**2)*L**3 |
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C +(viscC2smag/pi)**2*L**2*sqrt(Tension**2+Strain**2) |
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C |
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C biharmonic viscosity= |
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C viscA4 (or viscA4D on div pts and viscA4Z on zeta pts) |
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C +0.25*0.125*L**4*viscA4Grid/deltaT (approx) |
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C +0.125*L**5*sqrt((viscC4leith/pi)**6*grad(Vort3)**2 |
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C +(viscC4leithD/pi)**6*grad(hDiv)**2) |
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C +0.125*L**4*(viscC4smag/pi)**2*sqrt(Tension**2+Strain**2) |
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C |
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C Note that often 0.125*L**2 is the scale between harmonic and |
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C biharmonic (see Griffies and Hallberg (2000)) |
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C This allows the same value of the coefficient to be used |
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C for roughly similar results with biharmonic and harmonic |
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C |
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C LIMITERS -- limit min and max values of viscosities |
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C viscAhRemax is min value for grid point harmonic Reynolds num |
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C harmonic viscosity>sqrt(2*KE)*L/viscAhRemax |
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C |
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C viscA4Remax is min value for grid point biharmonic Reynolds num |
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C biharmonic viscosity>sqrt(2*KE)*L**3/8/viscA4Remax |
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C |
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C viscAhgridmax is CFL stability limiter for harmonic viscosity |
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C harmonic viscosity<0.25*viscAhgridmax*L**2/deltaT |
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C |
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C viscA4gridmax is CFL stability limiter for biharmonic viscosity |
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C biharmonic viscosity<viscA4gridmax*L**4/32/deltaT (approx) |
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C |
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C viscAhgridmin and viscA4gridmin are lower limits for viscosity: |
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C harmonic viscosity>0.25*viscAhgridmin*L**2/deltaT |
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C biharmonic viscosity>viscA4gridmin*L**4/32/deltaT (approx) |
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|
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|
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C |
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C RECOMMENDED VALUES |
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C viscC2Leith=1-3 |
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C viscC2LeithD=1-3 |
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C viscC4Leith=1-3 |
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C viscC4LeithD=1.5-3 |
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C viscC2smag=2.2-4 (Griffies and Hallberg,2000) |
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C 0.2-0.9 (Smagorinsky,1993) |
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C viscC4smag=2.2-4 (Griffies and Hallberg,2000) |
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C viscAhRemax>=1, (<2 suppresses a computational mode) |
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C viscA4Remax>=1, (<2 suppresses a computational mode) |
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C viscAhgridmax=1 |
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C viscA4gridmax=1 |
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C viscAhgrid<1 |
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C viscA4grid<1 |
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C viscAhgridmin<<1 |
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C viscA4gridmin<<1 |
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|
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C == Global variables == |
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#include "SIZE.h" |
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#include "GRID.h" |
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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#ifdef ALLOW_NONHYDROSTATIC |
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#include "NH_VARS.h" |
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#endif |
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|
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C == Routine arguments == |
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INTEGER bi,bj,k |
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_RL viscAh_Z(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscAh_D(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscA4_Z(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscA4_D(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL hDiv(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL vort3(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL tension(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL strain(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL KE(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RS hFacZ(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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INTEGER myThid |
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LOGICAL harmonic,biharmonic,useVariableViscosity |
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|
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C == Local variables == |
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INTEGER I,J |
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INTEGER kp1 |
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_RL smag2fac, smag4fac |
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_RL leith2fac, leith4fac |
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_RL leithD2fac, leithD4fac |
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_RL viscAhRe_max, viscA4Re_max |
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_RL Alin,grdVrt,grdDiv, keZpt |
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_RL recip_dt,L2,L3,L4,L5,L2rdt,L4rdt |
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_RL Uscl,U4scl |
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_RL divDx(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL divDy(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL vrtDx(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL vrtDy(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscAh_ZMax(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscAh_DMax(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscA4_ZMax(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscA4_DMax(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscAh_ZMin(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscAh_DMin(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscA4_ZMin(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscA4_DMin(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscAh_ZLth(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscAh_DLth(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscA4_ZLth(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscA4_DLth(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscAh_ZLthD(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscAh_DLthD(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscA4_ZLthD(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscA4_DLthD(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscAh_ZSmg(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscAh_DSmg(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscA4_ZSmg(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL viscA4_DSmg(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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LOGICAL calcLeith,calcSmag |
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|
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useVariableViscosity= |
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& (viscAhGrid.NE.0.) |
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& .OR.(viscA4Grid.NE.0.) |
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& .OR.(viscC2leith.NE.0.) |
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& .OR.(viscC2leithD.NE.0.) |
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& .OR.(viscC4leith.NE.0.) |
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& .OR.(viscC4leithD.NE.0.) |
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& .OR.(viscC2smag.NE.0.) |
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& .OR.(viscC4smag.NE.0.) |
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|
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harmonic= |
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& (viscAh.NE.0.) |
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& .OR.(viscAhD.NE.0.) |
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& .OR.(viscAhZ.NE.0.) |
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& .OR.(viscAhGrid.NE.0.) |
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& .OR.(viscC2leith.NE.0.) |
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& .OR.(viscC2leithD.NE.0.) |
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& .OR.(viscC2smag.NE.0.) |
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|
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IF ((harmonic).and.(viscAhremax.ne.0.)) THEN |
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viscAhre_max=sqrt(2. _d 0)/viscAhRemax |
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ELSE |
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viscAhre_max=0. _d 0 |
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ENDIF |
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|
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biharmonic= |
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& (viscA4.NE.0.) |
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& .OR.(viscA4D.NE.0.) |
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& .OR.(viscA4Z.NE.0.) |
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& .OR.(viscA4Grid.NE.0.) |
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& .OR.(viscC4leith.NE.0.) |
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& .OR.(viscC4leithD.NE.0.) |
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& .OR.(viscC4smag.NE.0.) |
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|
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IF ((biharmonic).and.(viscA4remax.ne.0.)) THEN |
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viscA4re_max=0.125 _d 0*sqrt(2. _d 0)/viscA4Remax |
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ELSE |
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viscA4re_max=0. _d 0 |
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ENDIF |
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|
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calcleith= |
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& (viscC2leith.NE.0.) |
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& .OR.(viscC2leithD.NE.0.) |
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& .OR.(viscC4leith.NE.0.) |
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& .OR.(viscC4leithD.NE.0.) |
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|
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calcsmag= |
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& (viscC2smag.NE.0.) |
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& .OR.(viscC4smag.NE.0.) |
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|
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IF (deltaTmom.NE.0.) THEN |
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recip_dt=1. _d 0/deltaTmom |
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ELSE |
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recip_dt=0. _d 0 |
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ENDIF |
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|
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IF (calcsmag) THEN |
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smag2fac=(viscC2smag/pi)**2 |
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smag4fac=0.125 _d 0*(viscC4smag/pi)**2 |
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ELSE |
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smag2fac=0. _d 0 |
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smag4fac=0. _d 0 |
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ENDIF |
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|
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IF (calcleith) THEN |
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IF (useFullLeith) THEN |
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leith2fac =(viscC2leith /pi)**6 |
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leithD2fac=(viscC2leithD/pi)**6 |
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leith4fac =0.015625 _d 0*(viscC4leith /pi)**6 |
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leithD4fac=0.015625 _d 0*(viscC4leithD/pi)**6 |
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ELSE |
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leith2fac =(viscC2leith /pi)**3 |
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leithD2fac=(viscC2leithD/pi)**3 |
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leith4fac =0.125 _d 0*(viscC4leith /pi)**3 |
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leithD4fac=0.125 _d 0*(viscC4leithD/pi)**3 |
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ENDIF |
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ELSE |
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leith2fac=0. _d 0 |
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leith4fac=0. _d 0 |
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leithD2fac=0. _d 0 |
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leithD4fac=0. _d 0 |
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ENDIF |
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|
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#ifdef ALLOW_AUTODIFF_TAMC |
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IF ( calcLeith .OR. calcSmag ) THEN |
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STOP 'calcLeith or calcSmag not implemented for ADJOINT' |
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ENDIF |
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#endif |
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DO j=1-Oly,sNy+Oly |
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DO i=1-Olx,sNx+Olx |
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viscAh_D(i,j)=viscAhD |
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viscAh_Z(i,j)=viscAhZ |
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viscA4_D(i,j)=viscA4D |
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viscA4_Z(i,j)=viscA4Z |
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c |
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visca4_zsmg(i,j) = 0. _d 0 |
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viscah_zsmg(i,j) = 0. _d 0 |
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c |
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viscAh_Dlth(i,j) = 0. _d 0 |
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viscA4_Dlth(i,j) = 0. _d 0 |
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viscAh_DlthD(i,j)= 0. _d 0 |
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viscA4_DlthD(i,j)= 0. _d 0 |
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c |
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viscAh_DSmg(i,j) = 0. _d 0 |
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viscA4_DSmg(i,j) = 0. _d 0 |
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c |
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viscAh_ZLth(i,j) = 0. _d 0 |
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viscA4_ZLth(i,j) = 0. _d 0 |
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viscAh_ZLthD(i,j)= 0. _d 0 |
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viscA4_ZLthD(i,j)= 0. _d 0 |
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ENDDO |
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ENDDO |
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|
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C - Viscosity |
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IF (useVariableViscosity) THEN |
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|
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C- Initialise to zero gradient of vorticity & divergence: |
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DO j=1-Oly,sNy+Oly |
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DO i=1-Olx,sNx+Olx |
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divDx(i,j) = 0. |
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divDy(i,j) = 0. |
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vrtDx(i,j) = 0. |
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vrtDy(i,j) = 0. |
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ENDDO |
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ENDDO |
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|
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IF (calcleith) THEN |
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C horizontal gradient of horizontal divergence: |
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|
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C- gradient in x direction: |
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cph-exch2#ifndef ALLOW_AUTODIFF_TAMC |
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IF (useCubedSphereExchange) THEN |
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C to compute d/dx(hDiv), fill corners with appropriate values: |
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CALL FILL_CS_CORNER_TR_RL( .TRUE., hDiv, bi,bj, myThid ) |
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ENDIF |
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cph-exch2#endif |
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DO j=2-Oly,sNy+Oly-1 |
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DO i=2-Olx,sNx+Olx-1 |
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divDx(i,j) = (hDiv(i,j)-hDiv(i-1,j))*recip_DXC(i,j,bi,bj) |
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ENDDO |
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ENDDO |
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|
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C- gradient in y direction: |
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cph-exch2#ifndef ALLOW_AUTODIFF_TAMC |
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IF (useCubedSphereExchange) THEN |
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C to compute d/dy(hDiv), fill corners with appropriate values: |
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CALL FILL_CS_CORNER_TR_RL(.FALSE., hDiv, bi,bj, myThid ) |
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ENDIF |
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cph-exch2#endif |
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DO j=2-Oly,sNy+Oly-1 |
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DO i=2-Olx,sNx+Olx-1 |
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divDy(i,j) = (hDiv(i,j)-hDiv(i,j-1))*recip_DYC(i,j,bi,bj) |
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ENDDO |
| 285 |
ENDDO |
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|
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C horizontal gradient of vertical vorticity: |
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C- gradient in x direction: |
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DO j=2-Oly,sNy+Oly |
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DO i=2-Olx,sNx+Olx-1 |
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vrtDx(i,j) = (vort3(i+1,j)-vort3(i,j)) |
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& *recip_DXG(i,j,bi,bj) |
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& *maskS(i,j,k,bi,bj) |
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ENDDO |
| 295 |
ENDDO |
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C- gradient in y direction: |
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DO j=2-Oly,sNy+Oly-1 |
| 298 |
DO i=2-Olx,sNx+Olx |
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vrtDy(i,j) = (vort3(i,j+1)-vort3(i,j)) |
| 300 |
& *recip_DYG(i,j,bi,bj) |
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& *maskW(i,j,k,bi,bj) |
| 302 |
ENDDO |
| 303 |
ENDDO |
| 304 |
|
| 305 |
ENDIF |
| 306 |
|
| 307 |
DO j=2-Oly,sNy+Oly-1 |
| 308 |
DO i=2-Olx,sNx+Olx-1 |
| 309 |
CCCCCCCCCCCCCCC Divergence Point CalculationsCCCCCCCCCCCCCCCCCCCC |
| 310 |
|
| 311 |
C These are (powers of) length scales |
| 312 |
IF (useAreaViscLength) THEN |
| 313 |
L2=rA(i,j,bi,bj) |
| 314 |
ELSE |
| 315 |
L2=2. _d 0/((recip_DXF(I,J,bi,bj)**2+recip_DYF(I,J,bi,bj)**2)) |
| 316 |
ENDIF |
| 317 |
L3=(L2**1.5) |
| 318 |
L4=(L2**2) |
| 319 |
L5=(L2**2.5) |
| 320 |
|
| 321 |
L2rdt=0.25 _d 0*recip_dt*L2 |
| 322 |
|
| 323 |
IF (useAreaViscLength) THEN |
| 324 |
L4rdt=0.03125 _d 0*recip_dt*L2**2 |
| 325 |
ELSE |
| 326 |
L4rdt=recip_dt/( 6. _d 0*(recip_DXF(I,J,bi,bj)**4 |
| 327 |
& +recip_DYF(I,J,bi,bj)**4) |
| 328 |
& +8. _d 0*((recip_DXF(I,J,bi,bj) |
| 329 |
& *recip_DYF(I,J,bi,bj))**2) ) |
| 330 |
ENDIF |
| 331 |
|
| 332 |
C Velocity Reynolds Scale |
| 333 |
IF ( viscAhRe_max.GT.0. .AND. KE(i,j).GT.0. ) THEN |
| 334 |
Uscl=sqrt(KE(i,j)*L2)*viscAhRe_max |
| 335 |
ELSE |
| 336 |
Uscl=0. |
| 337 |
ENDIF |
| 338 |
IF ( viscA4Re_max.GT.0. .AND. KE(i,j).GT.0. ) THEN |
| 339 |
U4scl=sqrt(KE(i,j))*L3*viscA4Re_max |
| 340 |
ELSE |
| 341 |
U4scl=0. |
| 342 |
ENDIF |
| 343 |
|
| 344 |
#ifndef ALLOW_AUTODIFF_TAMC |
| 345 |
IF (useFullLeith.and.calcleith) THEN |
| 346 |
C This is the vector magnitude of the vorticity gradient squared |
| 347 |
grdVrt=0.25 _d 0*( (vrtDx(i,j+1)*vrtDx(i,j+1) |
| 348 |
& + vrtDx(i,j)*vrtDx(i,j) ) |
| 349 |
& + (vrtDy(i+1,j)*vrtDy(i+1,j) |
| 350 |
& + vrtDy(i,j)*vrtDy(i,j) ) ) |
| 351 |
|
| 352 |
C This is the vector magnitude of grad (div.v) squared |
| 353 |
C Using it in Leith serves to damp instabilities in w. |
| 354 |
grdDiv=0.25 _d 0*( (divDx(i+1,j)*divDx(i+1,j) |
| 355 |
& + divDx(i,j)*divDx(i,j) ) |
| 356 |
& + (divDy(i,j+1)*divDy(i,j+1) |
| 357 |
& + divDy(i,j)*divDy(i,j) ) ) |
| 358 |
|
| 359 |
viscAh_DLth(i,j)= |
| 360 |
& sqrt(leith2fac*grdVrt+leithD2fac*grdDiv)*L3 |
| 361 |
viscA4_DLth(i,j)= |
| 362 |
& sqrt(leith4fac*grdVrt+leithD4fac*grdDiv)*L5 |
| 363 |
viscAh_DLthd(i,j)= |
| 364 |
& sqrt(leithD2fac*grdDiv)*L3 |
| 365 |
viscA4_DLthd(i,j)= |
| 366 |
& sqrt(leithD4fac*grdDiv)*L5 |
| 367 |
ELSEIF (calcleith) THEN |
| 368 |
C but this approximation will work on cube |
| 369 |
c (and differs by as much as 4X) |
| 370 |
grdVrt=max( abs(vrtDx(i,j+1)), abs(vrtDx(i,j)) ) |
| 371 |
grdVrt=max( grdVrt, abs(vrtDy(i+1,j)) ) |
| 372 |
grdVrt=max( grdVrt, abs(vrtDy(i,j)) ) |
| 373 |
|
| 374 |
c This approximation is good to the same order as above... |
| 375 |
grdDiv=max( abs(divDx(i+1,j)), abs(divDx(i,j)) ) |
| 376 |
grdDiv=max( grdDiv, abs(divDy(i,j+1)) ) |
| 377 |
grdDiv=max( grdDiv, abs(divDy(i,j)) ) |
| 378 |
|
| 379 |
viscAh_Dlth(i,j)=(leith2fac*grdVrt+(leithD2fac*grdDiv))*L3 |
| 380 |
viscA4_Dlth(i,j)=(leith4fac*grdVrt+(leithD4fac*grdDiv))*L5 |
| 381 |
viscAh_DlthD(i,j)=((leithD2fac*grdDiv))*L3 |
| 382 |
viscA4_DlthD(i,j)=((leithD4fac*grdDiv))*L5 |
| 383 |
ELSE |
| 384 |
viscAh_Dlth(i,j)=0. _d 0 |
| 385 |
viscA4_Dlth(i,j)=0. _d 0 |
| 386 |
viscAh_DlthD(i,j)=0. _d 0 |
| 387 |
viscA4_DlthD(i,j)=0. _d 0 |
| 388 |
ENDIF |
| 389 |
|
| 390 |
IF (calcsmag) THEN |
| 391 |
viscAh_DSmg(i,j)=L2 |
| 392 |
& *sqrt(tension(i,j)**2 |
| 393 |
& +0.25 _d 0*(strain(i+1, j )**2+strain( i ,j+1)**2 |
| 394 |
& +strain(i , j )**2+strain(i+1,j+1)**2)) |
| 395 |
viscA4_DSmg(i,j)=smag4fac*L2*viscAh_DSmg(i,j) |
| 396 |
viscAh_DSmg(i,j)=smag2fac*viscAh_DSmg(i,j) |
| 397 |
ELSE |
| 398 |
viscAh_DSmg(i,j)=0. _d 0 |
| 399 |
viscA4_DSmg(i,j)=0. _d 0 |
| 400 |
ENDIF |
| 401 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 402 |
|
| 403 |
C Harmonic on Div.u points |
| 404 |
Alin=viscAhD+viscAhGrid*L2rdt |
| 405 |
& +viscAh_DLth(i,j)+viscAh_DSmg(i,j) |
| 406 |
viscAh_DMin(i,j)=max(viscAhGridMin*L2rdt,Uscl) |
| 407 |
viscAh_D(i,j)=max(viscAh_DMin(i,j),Alin) |
| 408 |
viscAh_DMax(i,j)=min(viscAhGridMax*L2rdt,viscAhMax) |
| 409 |
viscAh_D(i,j)=min(viscAh_DMax(i,j),viscAh_D(i,j)) |
| 410 |
|
| 411 |
C BiHarmonic on Div.u points |
| 412 |
Alin=viscA4D+viscA4Grid*L4rdt |
| 413 |
& +viscA4_DLth(i,j)+viscA4_DSmg(i,j) |
| 414 |
viscA4_DMin(i,j)=max(viscA4GridMin*L4rdt,U4scl) |
| 415 |
viscA4_D(i,j)=max(viscA4_DMin(i,j),Alin) |
| 416 |
viscA4_DMax(i,j)=min(viscA4GridMax*L4rdt,viscA4Max) |
| 417 |
viscA4_D(i,j)=min(viscA4_DMax(i,j),viscA4_D(i,j)) |
| 418 |
|
| 419 |
#ifdef ALLOW_NONHYDROSTATIC |
| 420 |
C /* Pass Viscosities to calc_gw, if constant, not necessary */ |
| 421 |
|
| 422 |
kp1 = MIN(k+1,Nr) |
| 423 |
|
| 424 |
if (k .eq. 1) then |
| 425 |
viscAh_W(i,j,kp1,bi,bj)=0.5*viscAh_D(i,j) |
| 426 |
viscA4_W(i,j,kp1,bi,bj)=0.5*viscA4_D(i,j) |
| 427 |
|
| 428 |
viscAh_W(i,j,k,bi,bj)=viscAh_D(i,j) /* These values dont get used */ |
| 429 |
viscA4_W(i,j,k,bi,bj)=viscA4_D(i,j) |
| 430 |
else |
| 431 |
C Note that previous call of this function has already added half. |
| 432 |
viscAh_W(i,j,kp1,bi,bj)=0.5*viscAh_D(i,j) |
| 433 |
viscA4_W(i,j,kp1,bi,bj)=0.5*viscA4_D(i,j) |
| 434 |
|
| 435 |
viscAh_W(i,j,k,bi,bj)=viscAh_W(i,j,k,bi,bj)+0.5*viscAh_D(i,j) |
| 436 |
viscA4_W(i,j,k,bi,bj)=viscA4_W(i,j,k,bi,bj)+0.5*viscA4_D(i,j) |
| 437 |
endif |
| 438 |
#endif /* ALLOW_NONHYDROSTATIC */ |
| 439 |
|
| 440 |
CCCCCCCCCCCCC Vorticity Point CalculationsCCCCCCCCCCCCCCCCCC |
| 441 |
C These are (powers of) length scales |
| 442 |
IF (useAreaViscLength) THEN |
| 443 |
L2=rAz(i,j,bi,bj) |
| 444 |
ELSE |
| 445 |
L2=2. _d 0/((recip_DXV(I,J,bi,bj)**2+recip_DYU(I,J,bi,bj)**2)) |
| 446 |
ENDIF |
| 447 |
|
| 448 |
L3=(L2**1.5) |
| 449 |
L4=(L2**2) |
| 450 |
L5=(L2**2.5) |
| 451 |
|
| 452 |
L2rdt=0.25 _d 0*recip_dt*L2 |
| 453 |
IF (useAreaViscLength) THEN |
| 454 |
L4rdt=0.125 _d 0*recip_dt*rAz(i,j,bi,bj)**2 |
| 455 |
ELSE |
| 456 |
L4rdt=recip_dt/ |
| 457 |
& ( 6. _d 0*(recip_DXV(I,J,bi,bj)**4+recip_DYU(I,J,bi,bj)**4) |
| 458 |
& +8. _d 0*((recip_DXV(I,J,bi,bj)*recip_DYU(I,J,bi,bj))**2)) |
| 459 |
ENDIF |
| 460 |
|
| 461 |
C Velocity Reynolds Scale (Pb here at CS-grid corners !) |
| 462 |
IF ( viscAhRe_max.GT.0. .OR. viscA4Re_max.GT.0. ) THEN |
| 463 |
keZpt=0.25 _d 0*( (KE(i,j)+KE(i-1,j-1)) |
| 464 |
& +(KE(i-1,j)+KE(i,j-1)) ) |
| 465 |
IF ( keZpt.GT.0. ) THEN |
| 466 |
Uscl = sqrt(keZpt*L2)*viscAhRe_max |
| 467 |
U4scl= sqrt(keZpt)*L3*viscA4Re_max |
| 468 |
ELSE |
| 469 |
Uscl =0. |
| 470 |
U4scl=0. |
| 471 |
ENDIF |
| 472 |
ELSE |
| 473 |
Uscl =0. |
| 474 |
U4scl=0. |
| 475 |
ENDIF |
| 476 |
|
| 477 |
#ifndef ALLOW_AUTODIFF_TAMC |
| 478 |
C This is the vector magnitude of the vorticity gradient squared |
| 479 |
IF (useFullLeith.and.calcleith) THEN |
| 480 |
grdVrt=0.25 _d 0*( (vrtDx(i-1,j)*vrtDx(i-1,j) |
| 481 |
& + vrtDx(i,j)*vrtDx(i,j) ) |
| 482 |
& + (vrtDy(i,j-1)*vrtDy(i,j-1) |
| 483 |
& + vrtDy(i,j)*vrtDy(i,j) ) ) |
| 484 |
|
| 485 |
C This is the vector magnitude of grad(div.v) squared |
| 486 |
grdDiv=0.25 _d 0*( (divDx(i,j-1)*divDx(i,j-1) |
| 487 |
& + divDx(i,j)*divDx(i,j) ) |
| 488 |
& + (divDy(i-1,j)*divDy(i-1,j) |
| 489 |
& + divDy(i,j)*divDy(i,j) ) ) |
| 490 |
|
| 491 |
viscAh_ZLth(i,j)= |
| 492 |
& sqrt(leith2fac*grdVrt+leithD2fac*grdDiv)*L3 |
| 493 |
viscA4_ZLth(i,j)= |
| 494 |
& sqrt(leith4fac*grdVrt+leithD4fac*grdDiv)*L5 |
| 495 |
viscAh_ZLthD(i,j)= |
| 496 |
& sqrt(leithD2fac*grdDiv)*L3 |
| 497 |
viscA4_ZLthD(i,j)= |
| 498 |
& sqrt(leithD4fac*grdDiv)*L5 |
| 499 |
|
| 500 |
ELSEIF (calcleith) THEN |
| 501 |
C but this approximation will work on cube (and differs by 4X) |
| 502 |
grdVrt=max( abs(vrtDx(i-1,j)), abs(vrtDx(i,j)) ) |
| 503 |
grdVrt=max( grdVrt, abs(vrtDy(i,j-1)) ) |
| 504 |
grdVrt=max( grdVrt, abs(vrtDy(i,j)) ) |
| 505 |
|
| 506 |
grdDiv=max( abs(divDx(i,j)), abs(divDx(i,j-1)) ) |
| 507 |
grdDiv=max( grdDiv, abs(divDy(i,j)) ) |
| 508 |
grdDiv=max( grdDiv, abs(divDy(i-1,j)) ) |
| 509 |
|
| 510 |
viscAh_ZLth(i,j)=(leith2fac*grdVrt+(leithD2fac*grdDiv))*L3 |
| 511 |
viscA4_ZLth(i,j)=(leith4fac*grdVrt+(leithD4fac*grdDiv))*L5 |
| 512 |
viscAh_ZLthD(i,j)=(leithD2fac*grdDiv)*L3 |
| 513 |
viscA4_ZLthD(i,j)=(leithD4fac*grdDiv)*L5 |
| 514 |
ELSE |
| 515 |
viscAh_ZLth(i,j)=0. _d 0 |
| 516 |
viscA4_ZLth(i,j)=0. _d 0 |
| 517 |
viscAh_ZLthD(i,j)=0. _d 0 |
| 518 |
viscA4_ZLthD(i,j)=0. _d 0 |
| 519 |
ENDIF |
| 520 |
|
| 521 |
IF (calcsmag) THEN |
| 522 |
viscAh_ZSmg(i,j)=L2 |
| 523 |
& *sqrt(strain(i,j)**2 |
| 524 |
& +0.25 _d 0*(tension( i , j )**2+tension( i ,j-1)**2 |
| 525 |
& +tension(i-1, j )**2+tension(i-1,j-1)**2)) |
| 526 |
viscA4_ZSmg(i,j)=smag4fac*L2*viscAh_ZSmg(i,j) |
| 527 |
viscAh_ZSmg(i,j)=smag2fac*viscAh_ZSmg(i,j) |
| 528 |
ENDIF |
| 529 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 530 |
|
| 531 |
C Harmonic on Zeta points |
| 532 |
Alin=viscAhZ+viscAhGrid*L2rdt |
| 533 |
& +viscAh_ZLth(i,j)+viscAh_ZSmg(i,j) |
| 534 |
viscAh_ZMin(i,j)=max(viscAhGridMin*L2rdt,Uscl) |
| 535 |
viscAh_Z(i,j)=max(viscAh_ZMin(i,j),Alin) |
| 536 |
viscAh_ZMax(i,j)=min(viscAhGridMax*L2rdt,viscAhMax) |
| 537 |
viscAh_Z(i,j)=min(viscAh_ZMax(i,j),viscAh_Z(i,j)) |
| 538 |
|
| 539 |
C BiHarmonic on Zeta points |
| 540 |
Alin=viscA4Z+viscA4Grid*L4rdt |
| 541 |
& +viscA4_ZLth(i,j)+viscA4_ZSmg(i,j) |
| 542 |
viscA4_ZMin(i,j)=max(viscA4GridMin*L4rdt,U4scl) |
| 543 |
viscA4_Z(i,j)=max(viscA4_ZMin(i,j),Alin) |
| 544 |
viscA4_ZMax(i,j)=min(viscA4GridMax*L4rdt,viscA4Max) |
| 545 |
viscA4_Z(i,j)=min(viscA4_ZMax(i,j),viscA4_Z(i,j)) |
| 546 |
ENDDO |
| 547 |
ENDDO |
| 548 |
ELSE |
| 549 |
DO j=1-Oly,sNy+Oly |
| 550 |
DO i=1-Olx,sNx+Olx |
| 551 |
viscAh_D(i,j)=viscAhD |
| 552 |
viscAh_Z(i,j)=viscAhZ |
| 553 |
viscA4_D(i,j)=viscA4D |
| 554 |
viscA4_Z(i,j)=viscA4Z |
| 555 |
ENDDO |
| 556 |
ENDDO |
| 557 |
ENDIF |
| 558 |
|
| 559 |
#ifdef ALLOW_DIAGNOSTICS |
| 560 |
IF (useDiagnostics) THEN |
| 561 |
CALL DIAGNOSTICS_FILL(viscAh_D,'VISCAHD ',k,1,2,bi,bj,myThid) |
| 562 |
CALL DIAGNOSTICS_FILL(viscA4_D,'VISCA4D ',k,1,2,bi,bj,myThid) |
| 563 |
CALL DIAGNOSTICS_FILL(viscAh_Z,'VISCAHZ ',k,1,2,bi,bj,myThid) |
| 564 |
CALL DIAGNOSTICS_FILL(viscA4_Z,'VISCA4Z ',k,1,2,bi,bj,myThid) |
| 565 |
#ifdef ALLOW_NONHYDROSTATIC |
| 566 |
CALL DIAGNOSTICS_FILL(viscAh_W,'VISCAHW ',k,1,2,bi,bj,myThid) |
| 567 |
CALL DIAGNOSTICS_FILL(viscA4_W,'VISCA4W ',k,1,2,bi,bj,myThid) |
| 568 |
#endif |
| 569 |
|
| 570 |
CALL DIAGNOSTICS_FILL(viscAh_DMax,'VAHDMAX ',k,1,2,bi,bj,myThid) |
| 571 |
CALL DIAGNOSTICS_FILL(viscA4_DMax,'VA4DMAX ',k,1,2,bi,bj,myThid) |
| 572 |
CALL DIAGNOSTICS_FILL(viscAh_ZMax,'VAHZMAX ',k,1,2,bi,bj,myThid) |
| 573 |
CALL DIAGNOSTICS_FILL(viscA4_ZMax,'VA4ZMAX ',k,1,2,bi,bj,myThid) |
| 574 |
|
| 575 |
CALL DIAGNOSTICS_FILL(viscAh_DMin,'VAHDMIN ',k,1,2,bi,bj,myThid) |
| 576 |
CALL DIAGNOSTICS_FILL(viscA4_DMin,'VA4DMIN ',k,1,2,bi,bj,myThid) |
| 577 |
CALL DIAGNOSTICS_FILL(viscAh_ZMin,'VAHZMIN ',k,1,2,bi,bj,myThid) |
| 578 |
CALL DIAGNOSTICS_FILL(viscA4_ZMin,'VA4ZMIN ',k,1,2,bi,bj,myThid) |
| 579 |
|
| 580 |
CALL DIAGNOSTICS_FILL(viscAh_DLth,'VAHDLTH ',k,1,2,bi,bj,myThid) |
| 581 |
CALL DIAGNOSTICS_FILL(viscA4_DLth,'VA4DLTH ',k,1,2,bi,bj,myThid) |
| 582 |
CALL DIAGNOSTICS_FILL(viscAh_ZLth,'VAHZLTH ',k,1,2,bi,bj,myThid) |
| 583 |
CALL DIAGNOSTICS_FILL(viscA4_ZLth,'VA4ZLTH ',k,1,2,bi,bj,myThid) |
| 584 |
|
| 585 |
CALL DIAGNOSTICS_FILL(viscAh_DLthD,'VAHDLTHD' |
| 586 |
& ,k,1,2,bi,bj,myThid) |
| 587 |
CALL DIAGNOSTICS_FILL(viscA4_DLthD,'VA4DLTHD' |
| 588 |
& ,k,1,2,bi,bj,myThid) |
| 589 |
CALL DIAGNOSTICS_FILL(viscAh_ZLthD,'VAHZLTHD' |
| 590 |
& ,k,1,2,bi,bj,myThid) |
| 591 |
CALL DIAGNOSTICS_FILL(viscA4_ZLthD,'VA4ZLTHD' |
| 592 |
& ,k,1,2,bi,bj,myThid) |
| 593 |
|
| 594 |
CALL DIAGNOSTICS_FILL(viscAh_DSmg,'VAHDSMAG',k,1,2,bi,bj,myThid) |
| 595 |
CALL DIAGNOSTICS_FILL(viscA4_DSmg,'VA4DSMAG',k,1,2,bi,bj,myThid) |
| 596 |
CALL DIAGNOSTICS_FILL(viscAh_ZSmg,'VAHZSMAG',k,1,2,bi,bj,myThid) |
| 597 |
CALL DIAGNOSTICS_FILL(viscA4_ZSmg,'VA4ZSMAG',k,1,2,bi,bj,myThid) |
| 598 |
ENDIF |
| 599 |
#endif |
| 600 |
|
| 601 |
RETURN |
| 602 |
END |
| 603 |
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