Directory: | ./ |
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File: | dyn3d_common/enercin.f90 |
Date: | 2022-01-11 19:19:34 |
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1 | 3841 | SUBROUTINE enercin ( vcov, ucov, vcont, ucont, ecin ) | |
2 | ! | ||
3 | !------------------------------------------------------------------------------- | ||
4 | ! Authors: P. Le Van. | ||
5 | !------------------------------------------------------------------------------- | ||
6 | ! Purpose: Compute kinetic energy at sigma levels. | ||
7 | IMPLICIT NONE | ||
8 | include "dimensions.h" | ||
9 | include "paramet.h" | ||
10 | include "comgeom.h" | ||
11 | !=============================================================================== | ||
12 | ! Arguments: | ||
13 | REAL, INTENT(IN) :: vcov (ip1jm, llm) | ||
14 | REAL, INTENT(IN) :: ucov (ip1jmp1,llm) | ||
15 | REAL, INTENT(IN) :: vcont (ip1jm, llm) | ||
16 | REAL, INTENT(IN) :: ucont (ip1jmp1,llm) | ||
17 | REAL, INTENT(OUT) :: ecin (ip1jmp1,llm) | ||
18 | !=============================================================================== | ||
19 | ! Notes: | ||
20 | ! . V | ||
21 | ! i,j-1 | ||
22 | ! | ||
23 | ! alpha4 . . alpha1 | ||
24 | ! | ||
25 | ! | ||
26 | ! U . . P . U | ||
27 | ! i-1,j i,j i,j | ||
28 | ! | ||
29 | ! alpha3 . . alpha2 | ||
30 | ! | ||
31 | ! | ||
32 | ! . V | ||
33 | ! i,j | ||
34 | ! | ||
35 | ! Kinetic energy at scalar point P(i,j) (excluding poles) is: | ||
36 | ! Ecin = 0.5 * U(i-1,j)**2 *( alpha3 + alpha4 ) + | ||
37 | ! 0.5 * U(i ,j)**2 *( alpha1 + alpha2 ) + | ||
38 | ! 0.5 * V(i,j-1)**2 *( alpha1 + alpha4 ) + | ||
39 | ! 0.5 * V(i, j)**2 *( alpha2 + alpha3 ) | ||
40 | !=============================================================================== | ||
41 | ! Local variables: | ||
42 | INTEGER :: l, ij, i | ||
43 | REAL :: ecinni(iip1), ecinsi(iip1), ecinpn, ecinps | ||
44 | !=============================================================================== | ||
45 |
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153640 | DO l=1,llm |
46 |
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153244377 | DO ij = iip2, ip1jm -1 |
47 | ecin(ij+1,l)=0.5*(ucov(ij ,l)*ucont(ij ,l)*alpha3p4(ij +1) & | ||
48 | + ucov(ij+1 ,l)*ucont(ij+1 ,l)*alpha1p2(ij +1) & | ||
49 | + vcov(ij-iim,l)*vcont(ij-iim,l)*alpha1p4(ij +1) & | ||
50 | 153244377 | + vcov(ij+1 ,l)*vcont(ij+1 ,l)*alpha2p3(ij +1) ) | |
51 | END DO | ||
52 | !--- Correction: ecin(1,j,l)= ecin(iip1,j,l) | ||
53 |
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4643769 | DO ij=iip2,ip1jm,iip1; ecin(ij,l) = ecin(ij+iim,l); END DO |
54 | |||
55 | !--- North pole | ||
56 |
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4943367 | DO i=1,iim |
57 | 4943367 | ecinni(i) = vcov(i,l)*vcont(i,l)*aire(i) | |
58 | END DO | ||
59 |
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4943367 | ecinpn = 0.5*SUM(ecinni(1:iim))/apoln |
60 |
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5093166 | DO ij=1,iip1; ecin(ij,l)=ecinpn; END DO |
61 | |||
62 | !--- South pole | ||
63 |
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4943367 | DO i=1,iim |
64 | 4943367 | ecinsi(i) = vcov(i+ip1jmi1,l)*vcont(i+ip1jmi1,l)*aire(i+ip1jm) | |
65 | END DO | ||
66 |
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4943367 | ecinps = 0.5*SUM(ecinsi(1:iim))/apols |
67 |
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5097007 | DO ij=1,iip1; ecin(ij+ip1jm,l)=ecinps; END DO |
68 | END DO | ||
69 | |||
70 | 3841 | END SUBROUTINE enercin | |
71 | |||
72 |