| 1 | SUBROUTINE init_pt_anomaly |
|---|
| 2 | |
|---|
| 3 | !------------------------------------------------------------------------------! |
|---|
| 4 | ! Current revisions: |
|---|
| 5 | ! ----------------- |
|---|
| 6 | ! |
|---|
| 7 | ! Modification of the amplitude to obtain a visible temperature perturbation. |
|---|
| 8 | ! |
|---|
| 9 | ! Former revisions: |
|---|
| 10 | ! ----------------- |
|---|
| 11 | ! $Id: init_pt_anomaly.f90 861 2012-03-26 14:18:34Z suehring $ |
|---|
| 12 | ! |
|---|
| 13 | ! 667 2010-12-23 12:06:00Z suehring/gryschka |
|---|
| 14 | ! Call of exchange_horiz are modified. |
|---|
| 15 | ! |
|---|
| 16 | ! 75 2007-03-22 09:54:05Z raasch |
|---|
| 17 | ! 2nd+3rd argument removed from exchange horiz |
|---|
| 18 | ! |
|---|
| 19 | ! 19 2007-02-23 04:53:48Z raasch |
|---|
| 20 | ! Calculation extended for gridpoint nzt |
|---|
| 21 | ! |
|---|
| 22 | ! RCS Log replace by Id keyword, revision history cleaned up |
|---|
| 23 | ! |
|---|
| 24 | ! Revision 1.7 2005/03/26 20:36:55 raasch |
|---|
| 25 | ! Arguments for non-cyclic boundary conditions added to argument list of |
|---|
| 26 | ! routine exchange_horiz |
|---|
| 27 | ! |
|---|
| 28 | ! Revision 1.1 1997/08/29 08:58:56 raasch |
|---|
| 29 | ! Initial revision |
|---|
| 30 | ! |
|---|
| 31 | ! |
|---|
| 32 | ! Description: |
|---|
| 33 | ! ------------ |
|---|
| 34 | ! Impose a temperature perturbation for an advection test. |
|---|
| 35 | !------------------------------------------------------------------------------! |
|---|
| 36 | |
|---|
| 37 | USE arrays_3d |
|---|
| 38 | USE constants |
|---|
| 39 | USE grid_variables |
|---|
| 40 | USE indices |
|---|
| 41 | USE control_parameters |
|---|
| 42 | |
|---|
| 43 | IMPLICIT NONE |
|---|
| 44 | |
|---|
| 45 | INTEGER :: i, ic, j, jc, k, kc |
|---|
| 46 | REAL :: betrag, radius, rc, x, y, z |
|---|
| 47 | |
|---|
| 48 | ! |
|---|
| 49 | !-- Defaults: radius rc, strength z, |
|---|
| 50 | !-- position of centre: ic, jc, kc |
|---|
| 51 | rc = 10.0 * dx |
|---|
| 52 | ic = ( nx+1 ) / 2 |
|---|
| 53 | jc = ic |
|---|
| 54 | kc = nzt / 2 |
|---|
| 55 | |
|---|
| 56 | ! |
|---|
| 57 | !-- Compute the perturbation. |
|---|
| 58 | DO i = nxl, nxr |
|---|
| 59 | DO j = nys, nyn |
|---|
| 60 | DO k = nzb+1, nzt |
|---|
| 61 | x = ( i - ic ) * dx |
|---|
| 62 | y = ( j - jc ) * dy |
|---|
| 63 | z = ABS( zu(k) - zu(kc) ) |
|---|
| 64 | radius = SQRT( x**2 + y**2 + z**2 ) |
|---|
| 65 | IF ( radius <= rc ) THEN |
|---|
| 66 | betrag = 5.0 * EXP( -( radius * 0.001 / 2.0 )**2 ) |
|---|
| 67 | ELSE |
|---|
| 68 | betrag = 0.0 |
|---|
| 69 | ENDIF |
|---|
| 70 | |
|---|
| 71 | pt(k,j,i) = pt(k,j,i) + betrag |
|---|
| 72 | |
|---|
| 73 | ENDDO |
|---|
| 74 | ENDDO |
|---|
| 75 | ENDDO |
|---|
| 76 | |
|---|
| 77 | ! |
|---|
| 78 | !-- Exchange of boundary values for temperature |
|---|
| 79 | CALL exchange_horiz( pt, nbgp ) |
|---|
| 80 | |
|---|
| 81 | |
|---|
| 82 | END SUBROUTINE init_pt_anomaly |
|---|
