/[MITgcm]/MITgcm/pkg/generic_advdiff/GAD.h
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Contents of /MITgcm/pkg/generic_advdiff/GAD.h

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Revision 1.18 - (show annotations) (download)
Wed Aug 15 22:35:41 2007 UTC (16 years, 8 months ago) by jmc
Branch: MAIN
CVS Tags: checkpoint59g, checkpoint59f, checkpoint59h
Changes since 1.17: +13 -1 lines
File MIME type: text/plain
Define loop range indices for computing vertical advection tendency
 as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR).
and do the calculation in the interior (no overlap) only to save CPU time.
note: 1) for now, only implemented for SOM advection
      2) can recover old version (if needed) by changing only 1 file: GAD.h

1 C $Header: /u/gcmpack/MITgcm/pkg/generic_advdiff/GAD.h,v 1.17 2007/01/25 17:29:15 jmc Exp $
2 C $Name: $
3
4 CBOP
5 C !ROUTINE: GAD.h
6
7 C !INTERFACE:
8 C #include "GAD.h"
9
10 C !DESCRIPTION:
11 C Contains enumerated constants for distinguishing between different
12 C advection schemes and tracers.
13 C
14 C Unfortunately, there is no easy way to make use of the
15 C tokens in namelist input so for now we have to enter the
16 C tokens value into "data" (ie. 2 for 2nd order etc.)
17
18 C !USES:
19
20 C !DEFINED PARAMETERS:
21
22 C ENUM_UPWIND_1RST :: 1rst Order Upwind
23 INTEGER ENUM_UPWIND_1RST
24 PARAMETER(ENUM_UPWIND_1RST=1)
25
26 C ENUM_CENTERED_2ND :: Centered 2nd order
27 INTEGER ENUM_CENTERED_2ND
28 PARAMETER(ENUM_CENTERED_2ND=2)
29
30 C ENUM_UPWIND_3RD :: 3rd order upwind
31 INTEGER ENUM_UPWIND_3RD
32 PARAMETER(ENUM_UPWIND_3RD=3)
33
34 C ENUM_CENTERED_4TH :: Centered 4th order
35 INTEGER ENUM_CENTERED_4TH
36 PARAMETER(ENUM_CENTERED_4TH=4)
37
38 C ENUM_DST2 :: 2nd Order Direct Space and Time (= Lax-Wendroff)
39 INTEGER ENUM_DST2
40 PARAMETER(ENUM_DST2=20)
41
42 C ENUM_FLUX_LIMIT :: Non-linear flux limiter
43 INTEGER ENUM_FLUX_LIMIT
44 PARAMETER(ENUM_FLUX_LIMIT=77)
45
46 C ENUM_DST3 :: 3rd Order Direst Space and Time
47 INTEGER ENUM_DST3
48 PARAMETER(ENUM_DST3=30)
49
50 C ENUM_DST3_FLUX_LIMIT :: 3-DST flux limited
51 INTEGER ENUM_DST3_FLUX_LIMIT
52 PARAMETER(ENUM_DST3_FLUX_LIMIT=33)
53
54 C ENUM_OS7MP :: 7th Order One Step method with Monotonicity Preserving Limiter
55 INTEGER ENUM_OS7MP
56 PARAMETER(ENUM_OS7MP=7)
57
58 C ENUM_SOM_PRATHER :: 2nd Order-Moment Advection Scheme, Prather, 1986
59 INTEGER ENUM_SOM_PRATHER
60 PARAMETER(ENUM_SOM_PRATHER=80)
61
62 C ENUM_SOM_LIMITER :: 2nd Order-Moment Advection Scheme, Prather Limiter
63 INTEGER ENUM_SOM_LIMITER
64 PARAMETER(ENUM_SOM_LIMITER=81)
65
66 C nSOM :: number of 1rst & 2nd Order-Moments: 1+1 (1D), 2+3 (2D), 3+6 (3D)
67 INTEGER nSOM
68 PARAMETER( nSOM = 3+6 )
69
70 C oneSixth :: Third/fourth order interpolation factor
71 _RL oneSixth
72 PARAMETER(oneSixth=1.D0/6.D0)
73
74 C loop range for computing vertical advection tendency
75 C iMinAdvR,iMaxAdvR :: 1rst index (X-dir) loop range for vertical advection
76 C jMinAdvR,jMaxAdvR :: 2nd index (Y-dir) loop range for vertical advection
77 INTEGER iMinAdvR, iMaxAdvR, jMinAdvR, jMaxAdvR
78 c PARAMETER ( iMinAdvR = 1-OLx , iMaxAdvR = sNx+OLx )
79 c PARAMETER ( jMinAdvR = 1-OLy , jMaxAdvR = sNy+OLy )
80 C- note: we use to compute vertical advection tracer tendency everywhere
81 C (overlap included) as above, but really needs valid tracer tendency
82 C in interior only (as below):
83 PARAMETER ( iMinAdvR = 1 , iMaxAdvR = sNx )
84 PARAMETER ( jMinAdvR = 1 , jMaxAdvR = sNy )
85
86 C Differentiate between tracers (needed for KPP - arrgh!!!)
87 cph and GMRedi arrgh*arrgh!!!)
88 cph indices are used for TAF key computations, so need to
89 cph running from 1, 2, ...
90 c
91 C GAD_TEMPERATURE :: temperature
92 INTEGER GAD_TEMPERATURE
93 PARAMETER(GAD_TEMPERATURE=1)
94 C GAD_SALINITY :: salinity
95 INTEGER GAD_SALINITY
96 PARAMETER(GAD_SALINITY=2)
97 C GAD_TR1 :: passive tracer 1
98 INTEGER GAD_TR1
99 PARAMETER(GAD_TR1=3)
100 CEOP
101
102 C-- COMMON /GAD_PARM_L/ Logical parameters for GAD pkg routines
103 C tempSOM_Advection :: set to T if using 2nd-Order Moment advection for Temp
104 C saltSOM_Advection :: set to T if using 2nd-Order Moment advection for Salt
105 C tempMultiDimAdvec :: set to T if using multi-dim advection for Temp
106 C saltMultiDimAdvec :: set to T if using multi-dim advection for Salt
107 C AdamsBashforthGt :: apply Adams-Bashforth extrapolation on T tendency (=Gt)
108 C AdamsBashforthGs :: apply Adams-Bashforth extrapolation on S tendency (=Gs)
109 C AdamsBashforth_T :: apply Adams-Bashforth extrapolation on Pot.Temp.
110 C AdamsBashforth_S :: apply Adams-Bashforth extrapolation on Salinity
111 C tempStartAB :: start this run (or restart) without previous gT/Temp
112 C saltStartAB :: start this run (or restart) without previous gS/Salt
113 LOGICAL tempSOM_Advection
114 LOGICAL saltSOM_Advection
115 LOGICAL tempMultiDimAdvec
116 LOGICAL saltMultiDimAdvec
117 LOGICAL AdamsBashforthGt
118 LOGICAL AdamsBashforthGs
119 LOGICAL AdamsBashforth_T
120 LOGICAL AdamsBashforth_S
121 LOGICAL tempStartAB
122 LOGICAL saltStartAB
123 COMMON /GAD_PARM_L/
124 & tempSOM_Advection, saltSOM_Advection,
125 & tempMultiDimAdvec, saltMultiDimAdvec,
126 & AdamsBashforthGt, AdamsBashforthGs,
127 & AdamsBashforth_T, AdamsBashforth_S,
128 & tempStartAB, saltStartAB
129
130 CEH3 ;;; Local Variables: ***
131 CEH3 ;;; mode:fortran ***
132 CEH3 ;;; End: ***

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