| [1] | 1 | SUBROUTINE timestep_scheme_steering |
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| 2 | |
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| 3 | !------------------------------------------------------------------------------! |
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| [484] | 4 | ! Current revisions: |
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| [1001] | 5 | ! ------------------ |
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| 6 | ! all actions concerning leapfrog scheme removed |
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| [1] | 7 | ! |
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| 8 | ! Former revisions: |
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| 9 | ! ----------------- |
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| [3] | 10 | ! $Id: timestep_scheme_steering.f90 1001 2012-09-13 14:08:46Z raasch $ |
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| [674] | 11 | ! |
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| 12 | ! 673 2011-01-18 16:19:48Z suehring |
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| 13 | ! No pressure term during time integration (tsc(4)=0.0). |
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| 14 | ! |
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| [3] | 15 | ! RCS Log replace by Id keyword, revision history cleaned up |
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| 16 | ! |
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| [1] | 17 | ! Revision 1.2 2005/03/26 21:17:06 raasch |
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| 18 | ! No pressure term for Runge-Kutta-schemes (tsc(4)=0.0) |
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| 19 | ! |
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| 20 | ! Revision 1.1 2004/01/28 15:34:47 raasch |
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| 21 | ! Initial revision |
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| 22 | ! |
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| 23 | ! |
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| 24 | ! Description: |
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| 25 | ! ------------ |
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| 26 | ! Depending on the timestep scheme set the steering factors for the prognostic |
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| 27 | ! equations. |
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| 28 | !------------------------------------------------------------------------------! |
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| 29 | |
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| 30 | USE control_parameters |
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| 31 | |
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| 32 | IMPLICIT NONE |
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| 33 | |
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| 34 | |
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| 35 | IF ( timestep_scheme(1:5) == 'runge' ) THEN |
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| 36 | ! |
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| 37 | !-- Runge-Kutta schemes (here the factors depend on the respective |
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| 38 | !-- intermediate step) |
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| 39 | IF ( timestep_scheme == 'runge-kutta-2' ) THEN |
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| 40 | IF ( intermediate_timestep_count == 1 ) THEN |
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| 41 | tsc(1:5) = (/ 1.0, 1.0, 0.0, 0.0, 0.0 /) |
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| 42 | ELSE |
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| 43 | tsc(1:5) = (/ 1.0, 0.5, -0.5, 0.0, 1.0 /) |
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| 44 | ENDIF |
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| 45 | ELSE |
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| 46 | IF ( intermediate_timestep_count == 1 ) THEN |
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| 47 | tsc(1:5) = (/ 1.0, 1.0/3.0, 0.0, 0.0, 0.0 /) |
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| 48 | ELSEIF ( intermediate_timestep_count == 2 ) THEN |
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| 49 | tsc(1:5) = (/ 1.0, 15.0/16.0, -25.0/48.0, 0.0, 0.0 /) |
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| 50 | ELSE |
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| 51 | tsc(1:5) = (/ 1.0, 8.0/15.0, 1.0/15.0, 0.0, 1.0 /) |
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| 52 | ENDIF |
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| 53 | ENDIF |
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| 54 | |
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| [1001] | 55 | ELSEIF ( timestep_scheme == 'euler' ) THEN |
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| [1] | 56 | ! |
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| [1001] | 57 | !-- Euler scheme |
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| 58 | tsc(1:5) = (/ 1.0, 1.0, 0.0, 0.0, 1.0 /) |
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| [1] | 59 | |
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| 60 | ENDIF |
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| 61 | |
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| 62 | |
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| 63 | END SUBROUTINE timestep_scheme_steering |
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