SUBROUTINE init_pt_anomaly !------------------------------------------------------------------------------! ! Actual revisions: ! ----------------- ! ! ! Former revisions: ! ----------------- ! $Log: init_pt_anomaly.f90,v $ ! Revision 1.7 2005/03/26 20:36:55 raasch ! Arguments for non-cyclic boundary conditions added to argument list of ! routine exchange_horiz ! ! Revision 1.6 2001/03/30 07:32:28 raasch ! Translation of remaining German identifiers (variables, subroutines, etc.) ! ! Revision 1.5 2001/01/22 19:40:09 letzel ! All comments translated into English. ! ! Revision 1.4 2001/01/22 07:19:14 raasch ! Module test_variables removed ! ! Revision 1.3 1998/07/06 12:17:25 raasch ! + USE test_variables ! ! Revision 1.2 1997/09/12 06:26:16 raasch ! Stoerungsradius jetzt proportional zur Gitterweite ! ! Revision 1.1 1997/08/29 08:58:56 raasch ! Initial revision ! ! ! Description: ! ------------ ! Impose a temperature perturbation for an advection test. !------------------------------------------------------------------------------! USE arrays_3d USE constants USE grid_variables USE indices USE control_parameters IMPLICIT NONE INTEGER :: i, ic, j, jc, k, kc REAL :: betrag, radius, rc, x, y, z ! !-- Defaults: radius rc, strength z, !-- position of centre: ic, jc, kc rc = 10.0 * dx ic = ( nx+1 ) / 2 jc = ic kc = nzt / 2 ! !-- Compute the perturbation. DO i = nxl, nxr DO j = nys, nyn DO k = nzb+1, nzt-1 x = ( i - ic ) * dx y = ( j - jc ) * dy z = ABS( zu(k) - zu(kc) ) radius = SQRT( x**2 + y**2 + z**2 ) IF ( radius <= rc ) THEN betrag = 5.0 * EXP( -( radius / 2.0 )**2 ) ELSE betrag = 0.0 ENDIF pt(k,j,i) = pt(k,j,i) + betrag ENDDO ENDDO ENDDO ! !-- Exchange of boundary values for temperature CALL exchange_horiz( pt, 0, 0 ) END SUBROUTINE init_pt_anomaly