dyn3d/Dissipation/inidissip.f

module inidissip_m

  use dimens_m, only: llm

  IMPLICIT NONE

  private llm

  REAL dtdiss ! in s
  integer idissip ! période de la dissipation (en pas de temps)
  real tetaudiv(llm), tetaurot(llm), tetah(llm) ! in s
  real cdivu, crot, cdivh

contains

  SUBROUTINE inidissip

    ! From dyn3d/inidissip.F, version 1.1.1.1 2004/05/19 12:53:06

    ! Initialisation de la dissipation horizontale. Calcul des valeurs
    ! propres des opérateurs par méthode itérative.

    USE comconst, ONLY: dtvr
    use comdissnew, only: nitergdiv, nitergrot, niterh, tetagdiv, tetagrot, &
         tetatemp
    USE comvert, ONLY: preff, presnivs
    USE conf_gcm_m, ONLY: iperiod
    USE dimens_m, ONLY: iim, jjm
    use filtreg_m, only: filtreg
    use gradiv2_m, only: gradiv2
    use jumble, only: new_unit
    USE paramet_m, ONLY: jjp1

    ! Variables local to the procedure:
    REAL zvert(llm), max_zvert ! no dimension
    REAL, dimension(iim + 1, jjm + 1, 1):: zh, zu, gx, divgra, deltap
    real zv(iim + 1, jjm, 1), gy(iim + 1, jjm, 1)
    REAL zllm
    INTEGER l, seed_size, ii, unit
    REAL tetamin ! in s

    !-----------------------------------------------------------------------

    PRINT *, 'Call sequence information: inidissip'
    call random_seed(size=seed_size)
    call random_seed(put=(/(0, ii = 1, seed_size)/))

    PRINT *, 'Calcul des valeurs propres de divgrad'
    deltap = 1.
    call random_number(zh)
    zh = zh - 0.5
    CALL filtreg(zh, jjp1, 1, 2, 1, .TRUE.)

    DO l = 1, 50
       CALL divgrad2(1, zh, deltap, niterh, divgra, -1.)
       zllm = abs(maxval(divgra))
       zh = divgra / zllm
    END DO

    cdivh = 1. / zllm
    PRINT *, 'cdivh = ', cdivh

    PRINT *, 'Calcul des valeurs propres de gradiv'
    call random_number(zu)
    zu = zu - 0.5
    CALL filtreg(zu, jjp1, 1, 2, 1, .TRUE.)
    call random_number(zv)
    zv = zv - 0.5
    CALL filtreg(zv, jjm, 1, 2, 1, .FALSE.)

    DO l = 1, 50
       CALL gradiv2(zu, zv, nitergdiv, gx, gy, -1.)
       zllm = max(abs(maxval(gx)), abs(maxval(gy)))
       zu = gx / zllm
       zv = gy / zllm
    end DO

    cdivu = 1. / zllm
    PRINT *, 'cdivu = ', cdivu

    PRINT *, 'Calcul des valeurs propres de nxgrarot'
    call random_number(zu)
    zu = zu - 0.5
    CALL filtreg(zu, jjp1, 1, 2, 1, .TRUE.)
    call random_number(zv)
    zv = zv - 0.5
    CALL filtreg(zv, jjm, 1, 2, 1, .FALSE.)

    DO l = 1, 50
       CALL nxgraro2(1, zu, zv, nitergrot, gx, gy, -1.)
       zllm = max(abs(maxval(gx)), abs(maxval(gy)))
       zu = gx / zllm
       zv = gy / zllm
    end DO

    crot = 1. / zllm
    PRINT *, 'crot = ', crot

    ! Variation verticale du coefficient de dissipation :
    zvert = 2. - 1. / (1. + (preff / presnivs - 1.)**2)
    ! (between 1 and 2)

    tetaudiv = zvert / tetagdiv
    tetaurot = zvert / tetagrot
    tetah = zvert / tetatemp

    call new_unit(unit)
    open(unit, file="inidissip.csv", status="replace", action="write")
    write(unit, fmt=*) '"tetaudiv (s)" "tetaurot (s)" "tetah (s)"' ! title line
    do l = 1, llm
       write(unit, fmt=*) tetaudiv(l), tetaurot(l), tetah(l)
    end do
    close(unit)
    print *, 'Created file "inidissip.csv".'

    max_zvert = maxval(zvert)
    tetamin = min(1e6, tetagdiv / max_zvert, tetagrot / max_zvert, &
         tetatemp / max_zvert)
    PRINT *, 'tetamin = ', tetamin
    idissip = max(1, int(tetamin / (2 * dtvr * iperiod))) * iperiod
    PRINT *, 'idissip = ', idissip
    dtdiss = idissip * dtvr
    PRINT *, 'dtdiss = ', dtdiss, "s"

  END SUBROUTINE inidissip

end module inidissip_m
1	module inidissip_m
2
3	use dimens_m, only: llm
4
5	IMPLICIT NONE
6
7	private llm
8
9	REAL dtdiss ! in s
10	integer idissip ! période de la dissipation (en pas de temps)
11	real tetaudiv(llm), tetaurot(llm), tetah(llm) ! in s
12	real cdivu, crot, cdivh
13
14	contains
15
16	SUBROUTINE inidissip
17
18	! From dyn3d/inidissip.F, version 1.1.1.1 2004/05/19 12:53:06
19
20	! Initialisation de la dissipation horizontale. Calcul des valeurs
21	! propres des opérateurs par méthode itérative.
22
23	USE comconst, ONLY: dtvr
24	use comdissnew, only: nitergdiv, nitergrot, niterh, tetagdiv, tetagrot, &
25	tetatemp
26	USE comvert, ONLY: preff, presnivs
27	USE conf_gcm_m, ONLY: iperiod
28	USE dimens_m, ONLY: iim, jjm
29	use filtreg_m, only: filtreg
30	use gradiv2_m, only: gradiv2
31	use jumble, only: new_unit
32	USE paramet_m, ONLY: jjp1
33
34	! Variables local to the procedure:
35	REAL zvert(llm), max_zvert ! no dimension
36	REAL, dimension(iim + 1, jjm + 1, 1):: zh, zu, gx, divgra, deltap
37	real zv(iim + 1, jjm, 1), gy(iim + 1, jjm, 1)
38	REAL zllm
39	INTEGER l, seed_size, ii, unit
40	REAL tetamin ! in s
41
42	!-----------------------------------------------------------------------
43
44	PRINT *, 'Call sequence information: inidissip'
45	call random_seed(size=seed_size)
46	call random_seed(put=(/(0, ii = 1, seed_size)/))
47
48	PRINT *, 'Calcul des valeurs propres de divgrad'
49	deltap = 1.
50	call random_number(zh)
51	zh = zh - 0.5
52	CALL filtreg(zh, jjp1, 1, 2, 1, .TRUE.)
53
54	DO l = 1, 50
55	CALL divgrad2(1, zh, deltap, niterh, divgra, -1.)
56	zllm = abs(maxval(divgra))
57	zh = divgra / zllm
58	END DO
59
60	cdivh = 1. / zllm
61	PRINT *, 'cdivh = ', cdivh
62
63	PRINT *, 'Calcul des valeurs propres de gradiv'
64	call random_number(zu)
65	zu = zu - 0.5
66	CALL filtreg(zu, jjp1, 1, 2, 1, .TRUE.)
67	call random_number(zv)
68	zv = zv - 0.5
69	CALL filtreg(zv, jjm, 1, 2, 1, .FALSE.)
70
71	DO l = 1, 50
72	CALL gradiv2(zu, zv, nitergdiv, gx, gy, -1.)
73	zllm = max(abs(maxval(gx)), abs(maxval(gy)))
74	zu = gx / zllm
75	zv = gy / zllm
76	end DO
77
78	cdivu = 1. / zllm
79	PRINT *, 'cdivu = ', cdivu
80
81	PRINT *, 'Calcul des valeurs propres de nxgrarot'
82	call random_number(zu)
83	zu = zu - 0.5
84	CALL filtreg(zu, jjp1, 1, 2, 1, .TRUE.)
85	call random_number(zv)
86	zv = zv - 0.5
87	CALL filtreg(zv, jjm, 1, 2, 1, .FALSE.)
88
89	DO l = 1, 50
90	CALL nxgraro2(1, zu, zv, nitergrot, gx, gy, -1.)
91	zllm = max(abs(maxval(gx)), abs(maxval(gy)))
92	zu = gx / zllm
93	zv = gy / zllm
94	end DO
95
96	crot = 1. / zllm
97	PRINT *, 'crot = ', crot
98
99	! Variation verticale du coefficient de dissipation :
100	zvert = 2. - 1. / (1. + (preff / presnivs - 1.)**2)
101	! (between 1 and 2)
102
103	tetaudiv = zvert / tetagdiv
104	tetaurot = zvert / tetagrot
105	tetah = zvert / tetatemp
106
107	call new_unit(unit)
108	open(unit, file="inidissip.csv", status="replace", action="write")
109	write(unit, fmt=*) '"tetaudiv (s)" "tetaurot (s)" "tetah (s)"' ! title line
110	do l = 1, llm
111	write(unit, fmt=*) tetaudiv(l), tetaurot(l), tetah(l)
112	end do
113	close(unit)
114	print *, 'Created file "inidissip.csv".'
115
116	max_zvert = maxval(zvert)
117	tetamin = min(1e6, tetagdiv / max_zvert, tetagrot / max_zvert, &
118	tetatemp / max_zvert)
119	PRINT *, 'tetamin = ', tetamin
120	idissip = max(1, int(tetamin / (2 * dtvr * iperiod))) * iperiod
121	PRINT *, 'idissip = ', idissip
122	dtdiss = idissip * dtvr
123	PRINT *, 'dtdiss = ', dtdiss, "s"
124
125	END SUBROUTINE inidissip
126
127	end module inidissip_m