| 1 |
C $Header: /u/gcmpack/models/MITgcmUV/model/inc/PARAMS.h,v 1.7 1998/05/21 18:28:50 cnh Exp $ |
| 2 |
C |
| 3 |
C /==========================================================\ |
| 4 |
C | PARAMS.h | |
| 5 |
C | o Header file defining model "parameters". | |
| 6 |
C |==========================================================| |
| 7 |
C | The values from the model's standard input file are | |
| 8 |
C | stored into the variables held here. Notes describing | |
| 9 |
C | the parameters can also be found here. | |
| 10 |
C \==========================================================/ |
| 11 |
|
| 12 |
C-- Contants |
| 13 |
C Useful physical values |
| 14 |
Real*8 PI |
| 15 |
PARAMETER ( PI = 3.14159265358979323844D0 ) |
| 16 |
Real*8 deg2rad |
| 17 |
PARAMETER ( deg2rad = 2.D0*PI/360.D0 ) |
| 18 |
|
| 19 |
C Symbolic values |
| 20 |
C precXXXX - Used to indicate what precision to use for |
| 21 |
C dumping model state. |
| 22 |
INTEGER precFloat32 |
| 23 |
PARAMETER ( precFloat32 = 0 ) |
| 24 |
INTEGER precFloat64 |
| 25 |
PARAMETER ( precFloat64 = 1 ) |
| 26 |
|
| 27 |
C Checkpoint data |
| 28 |
INTEGER maxNoChkptLev |
| 29 |
PARAMETER ( maxNoChkptLev = 2 ) |
| 30 |
|
| 31 |
C-- COMMON /PARM_C/ Character valued parameters used by the model. |
| 32 |
C checkPtSuff - List of checkpoint file suffices |
| 33 |
COMMON /PARM_C/ checkPtSuff |
| 34 |
CHARACTER*(5) checkPtSuff(maxNoChkptLev) |
| 35 |
|
| 36 |
C-- COMMON /PARM_I/ Integer valued parameters used by the model. |
| 37 |
C cg2dMaxIters - Maximum number of iterations in the |
| 38 |
C two-dimensional con. grad solver. |
| 39 |
C cg2dChkResFreq - Frequency with which to check residual |
| 40 |
C in con. grad solver. |
| 41 |
C nIter0 - Start time-step number of for this run |
| 42 |
C nTimeSteps - Number of timesteps to execute |
| 43 |
C numStepsPerPickup - For offline setup. Frequency of pickup |
| 44 |
C of flow fields. |
| 45 |
C writeStatePrec - Precision used for writing model state. |
| 46 |
C writeBinaryPrec - Precision used for writing binary files |
| 47 |
C readBinaryPrec - Precision used for reading binary files |
| 48 |
C nCheckLev - Holds current checkpoint level |
| 49 |
COMMON /PARM_I/ |
| 50 |
& cg2dMaxIters, |
| 51 |
& cg2dChkResFreq, |
| 52 |
& nIter0, nTimeSteps, |
| 53 |
& numStepsPerPickup, |
| 54 |
& writeStatePrec, nCheckLev, |
| 55 |
& writeBinaryPrec, readBinaryPrec |
| 56 |
INTEGER cg2dMaxIters |
| 57 |
INTEGER cg2dChkResFreq |
| 58 |
INTEGER nIter0 |
| 59 |
INTEGER nTimeSteps |
| 60 |
INTEGER numStepsPerPickup |
| 61 |
INTEGER writeStatePrec |
| 62 |
INTEGER writeBinaryPrec |
| 63 |
INTEGER readBinaryPrec |
| 64 |
INTEGER nCheckLev |
| 65 |
|
| 66 |
C-- COMMON /PARM_L/ Logical valued parameters used by the model. |
| 67 |
C usingCartesianGrid - If TRUE grid generation will be in a cartesian |
| 68 |
C coordinate frame. |
| 69 |
C usingSphericalPolarGrid - If TRUE grid generation will be in a |
| 70 |
C spherical polar frame. |
| 71 |
C momViscosity - Flag which turns momentum friction terms on and off. |
| 72 |
C momAdvection - Flag which turns advection of momentum on and off. |
| 73 |
C momForcing - Flag which turns external forcing of momentum on |
| 74 |
C and off. |
| 75 |
C useCoriolis - Flag which turns the coriolis terms on and off. |
| 76 |
C tempDiffusion - Flag which turns diffusion of temperature on |
| 77 |
C and off. |
| 78 |
C tempAdvection - Flag which turns advection of temperature on |
| 79 |
C and off. |
| 80 |
C tempForcing - Flag which turns external forcing of temperature on |
| 81 |
C and off. |
| 82 |
C saltDiffusion - Flag which turns diffusion of salinit on |
| 83 |
C and off. |
| 84 |
C saltAdvection - Flag which turns advection of salinit on |
| 85 |
C and off. |
| 86 |
C saltForcing - Flag which turns external forcing of salinit on |
| 87 |
C and off. |
| 88 |
C implicitFreeSurface - Set to true to use implcit free surface |
| 89 |
C rigidLid - Set to true to use rigid lid |
| 90 |
COMMON /PARM_L/ usingCartesianGrid, usingSphericalPolarGrid, |
| 91 |
& momViscosity, momAdvection, momForcing, useCoriolis, |
| 92 |
& tempDiffusion, tempAdvection, tempForcing, |
| 93 |
& saltDiffusion, saltAdvection, saltForcing, |
| 94 |
& implicitFreeSurface, rigidLid |
| 95 |
LOGICAL usingCartesianGrid |
| 96 |
LOGICAL usingSphericalPolarGrid |
| 97 |
LOGICAL momViscosity |
| 98 |
LOGICAL momAdvection |
| 99 |
LOGICAL momForcing |
| 100 |
LOGICAL useCoriolis |
| 101 |
LOGICAL tempDiffusion |
| 102 |
LOGICAL tempAdvection |
| 103 |
LOGICAL tempForcing |
| 104 |
LOGICAL saltDiffusion |
| 105 |
LOGICAL saltAdvection |
| 106 |
LOGICAL saltForcing |
| 107 |
LOGICAL implicitFreeSurface |
| 108 |
LOGICAL rigidLid |
| 109 |
|
| 110 |
C-- COMMON /PARM_R/ "Real" valued parameters used by the model. |
| 111 |
C cg2dTargetResidual |
| 112 |
C - Target residual for cg2d solver. |
| 113 |
C cg2dpcOffDFac - Averaging weight for preconditioner off-diagonal. |
| 114 |
C Note. 20th May 1998 |
| 115 |
C I made a weird discovery! In the model paper we argue |
| 116 |
C for the form of the preconditioner used here ( see |
| 117 |
C A Finite-volume, Incompressible Navier-Stokes Model |
| 118 |
C ...., Marshall et. al ). The algebra gives a simple |
| 119 |
C 0.5 factor for the averaging of ac and aCw to get a |
| 120 |
C symmettric pre-conditioner. By using a factor of 0.51 |
| 121 |
C i.e. scaling the off-diagonal terms in the |
| 122 |
C preconditioner down slightly I managed to get the |
| 123 |
C number of iterations for convergence in a test case to |
| 124 |
C drop form 192 -> 134! Need to investigate this further! |
| 125 |
C For now I have introduced a parameter cg2dpcOffDFac which |
| 126 |
C defaults to 0.51 but can be set at runtime. |
| 127 |
C delZ - Vertical grid spacing ( m ) - delZ is the distance |
| 128 |
C between "w" surfaces. |
| 129 |
C delX - Separation between cell faces (m) or (deg), depending |
| 130 |
C delY on input flags. |
| 131 |
C gravity - Accel. due to gravity ( m/s^2 ) |
| 132 |
C gBaro - Accel. due to gravity used in barotropic equation ( m/s^2 ) |
| 133 |
C ronil - Reference density |
| 134 |
C startTime - Start time for model ( s ) |
| 135 |
C phiMin - Latitude of southern most cell face. |
| 136 |
C thetaMin - Longitude of western most cell face (this |
| 137 |
C is an "inert" parameter but it is included |
| 138 |
C to make geographical references simple.) |
| 139 |
C rSphere - Radius of sphere for a spherical polar grid ( m ). |
| 140 |
C f0 - Reference coriolis parameter ( 1/s ) |
| 141 |
C ( Southern edge f for beta plane ) |
| 142 |
C beta - df/dy ( s^-1.m^-1 ) |
| 143 |
C viscAh - Eddy viscosity coeff. for mixing of |
| 144 |
C momentum laterally ( m^2/s ) |
| 145 |
C viscAz - Eddy viscosity coeff. for mixing of |
| 146 |
C momentum vertically ( m^2/s ) |
| 147 |
C viscA4 - Biharmonic viscosity coeff. for mixing of |
| 148 |
C momentum laterally ( m^4/s ) |
| 149 |
C diffKhT - Laplacian diffusion coeff. for mixing of |
| 150 |
C heat laterally ( m^2/s ) |
| 151 |
C diffKzT - Laplacian diffusion coeff. for mixing of |
| 152 |
C heat vertically ( m^2/s ) |
| 153 |
C diffK4T - Biharmonic diffusion coeff. for mixing of |
| 154 |
C heat laterally ( m^4/s ) |
| 155 |
C diffKhS - Laplacian diffusion coeff. for mixing of |
| 156 |
C salt laterally ( m^2/s ) |
| 157 |
C diffKzS - Laplacian diffusion coeff. for mixing of |
| 158 |
C salt vertically ( m^2/s ) |
| 159 |
C diffK4S - Biharmonic diffusion coeff. for mixing of |
| 160 |
C salt laterally ( m^4/s ) |
| 161 |
C deltaT - Default timestep ( s ) |
| 162 |
C deltaTClock - Timestep used as model "clock". This determines the |
| 163 |
C IO frequencies and is used in tagging output. It can |
| 164 |
C be totally different to the dynamical time. Typically |
| 165 |
C it will be the deep-water timestep for accelerated runs. |
| 166 |
C Frequency of checkpointing and dumping of the model state |
| 167 |
C are referenced to this clock. ( s ) |
| 168 |
C deltaTMom - Timestep for momemtum equations ( s ) |
| 169 |
C deltaTtracer - Timestep for tracer equations ( s ) |
| 170 |
C freesurfFac - Parameter to turn implicit free surface term on or off |
| 171 |
C freesurfac = 1. uses implicit free surface |
| 172 |
C freesurfac = 0. uses rigid lid |
| 173 |
C tauCD - CD scheme coupling timescale ( 1/s ) |
| 174 |
C rCD - CD scheme normalised coupling parameter ( 0-1 ) |
| 175 |
C GMmaxslope - max. slope allowed in GM/Redi tensor |
| 176 |
C GMlength - Length to use in Visbeck et al. formula for K (m) |
| 177 |
C GMalpha - alpha to use in Visbeck et al. formula for K |
| 178 |
C GMdepth - Depth over which to integrate Richardson # (Visbeck et al.) |
| 179 |
C GMkbackground - background value of GM/Redi coefficient |
| 180 |
C startTime - Starting time for this integration ( s ). |
| 181 |
C endTime - Ending time for this integration ( s ). |
| 182 |
C chkPtFreq - Frequency of rolling check pointing ( s ). |
| 183 |
C pChkPtFreq - Frequency of permanent check pointing ( s ). |
| 184 |
C dumpFreq - Frequency with which model state is written to |
| 185 |
C post-processing files ( s ). |
| 186 |
COMMON /PARM_R/ cg2dTargetResidual, cg2dpcOffDFac, delZ, delX, delY, |
| 187 |
& deltaT,deltaTmom, deltaTtracer, deltaTClock,abeps, startTime, phiMin, |
| 188 |
& thetaMin, rSphere, f0, fCori, beta, viscAh, viscAz, viscA4, |
| 189 |
& diffKhT, diffKzT, diffK4T, diffKhS, diffKzS, diffK4S, delT, |
| 190 |
& tauCD, rCD, freeSurfFac, |
| 191 |
& GMmaxslope,GMlength,GMalpha,GMdepth,GMkbackground, |
| 192 |
& gravity, gBaro, rhonil, tRef, sRef, |
| 193 |
& endTime, chkPtFreq, pchkPtFreq, dumpFreq |
| 194 |
_RL cg2dTargetResidual |
| 195 |
_RL cg2dpcOffDFac |
| 196 |
_RL delZ(Nz) |
| 197 |
_RL delX(Nx) |
| 198 |
_RL delY(Ny) |
| 199 |
_RL deltaT |
| 200 |
_RL deltaTClock |
| 201 |
_RL deltaTmom |
| 202 |
_RL deltaTtracer |
| 203 |
_RL abeps |
| 204 |
_RL phiMin |
| 205 |
_RL thetaMin |
| 206 |
_RL rSphere |
| 207 |
_RL f0 |
| 208 |
_RL freeSurfFac |
| 209 |
_RL beta |
| 210 |
_RL viscAh |
| 211 |
_RL viscAz |
| 212 |
_RL viscA4 |
| 213 |
_RL diffKhT |
| 214 |
_RL diffKzT |
| 215 |
_RL diffK4T |
| 216 |
_RL diffKhS |
| 217 |
_RL diffKzS |
| 218 |
_RL diffK4S |
| 219 |
_RL delt |
| 220 |
_RL tauCD |
| 221 |
_RL rCD |
| 222 |
_RL GMmaxslope |
| 223 |
_RL GMlength |
| 224 |
_RL GMalpha |
| 225 |
_RL GMdepth |
| 226 |
_RL GMkbackground |
| 227 |
_RL gravity |
| 228 |
_RL gBaro |
| 229 |
_RL rhonil |
| 230 |
_RL tRef(Nz) |
| 231 |
_RL sRef(Nz) |
| 232 |
_RL Fcori(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 233 |
_RL startTime |
| 234 |
_RL endTime |
| 235 |
_RL chkPtFreq |
| 236 |
_RL pChkPtFreq |
| 237 |
_RL dumpFreq |
| 238 |
|
| 239 |
COMMON /PARM_A/ HeatCapacity_Cp, |
| 240 |
& Lamba_theta |
| 241 |
_RL HeatCapacity_Cp |
| 242 |
_RL Lamba_theta |
| 243 |
|
| 244 |
C Equation of State (polynomial coeffients) |
| 245 |
COMMON /PARM_EOS_NL/ eosC,eosSig0,eosRefT,eosRefS |
| 246 |
_RL eosC(Nz+1,9),eosSig0(Nz+1),eosRefT(Nz+1),eosRefS(Nz+1) |
| 247 |
C Linear equation of state |
| 248 |
C tAlpha - Linear EOS thermal expansion coefficient ( 1/degree ). |
| 249 |
C sBeta - Linear EOS haline contraction coefficient. |
| 250 |
COMMON /PARM_EOS_LIN/ tAlpha,sBeta |
| 251 |
_RL tAlpha |
| 252 |
_RL sBeta |
| 253 |
|
Parent Directory
| 
Revision Log
| 
Revision Graph