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jmc |
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C $Header: $ |
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C $Name: $ |
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# include "GAD_OPTIONS.h" |
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C-- File gad_osc_hat_r.F: Routines ??? |
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C-- Contents |
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C-- o GAD_OSC_LOC_R |
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C-- o GAD_OSC_HAT_R |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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SUBROUTINE GAD_OSC_LOC_R(ir,mask,fbar,ohat) |
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implicit none |
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C =============================================== global variables |
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# include "SIZE.h" |
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C ====================================================== arguments |
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integer ir |
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_RL mask(1-3:Nr+3) |
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_RL fbar(1-3:Nr+3) |
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_RL ohat(1:2, |
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& 1-3:Nr+3) |
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C ====================================================== variables |
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_RL floc(-1:+1) |
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if (ir.gt.+1-3 .and. |
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& ir.lt.Nr+3) then |
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C ================ mask local stencil: expand from centre outwards |
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floc(+0) = fbar(+0+ir) |
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floc(-1) = floc(+0) + |
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& mask(ir-1)*(fbar(ir-1)-floc(+0)) |
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floc(+1) = floc(+0) + |
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& mask(ir+1)*(fbar(ir+1)-floc(+0)) |
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C ================ calc. 1st & 2nd derivatives over masked stencil |
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ohat(+1,ir) = floc(+1)*0.25 _d 0 |
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& - floc(-1)*0.25 _d 0 |
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ohat(+2,ir) = floc(+1)*0.25 _d 0 |
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& - floc(+0)*0.50 _d 0 |
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& + floc(-1)*0.25 _d 0 |
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else |
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if (ir.eq.+1-3) then |
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C ================ mask local stencil: expand from centre outwards |
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floc(+0) = fbar(+0+ir) |
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floc(+1) = floc(+0) + |
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& mask(ir+1)*(fbar(ir+1)-floc(+0)) |
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C ================ calc. 1st & 2nd derivatives over masked stencil |
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ohat(+1,ir) = floc(+1)*0.50 _d 0 |
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& - floc(+0)*0.50 _d 0 |
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ohat(+2,ir) = 0. _d 0 |
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end if |
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if (ir.eq.Nr+3) then |
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C ================ mask local stencil: expand from centre outwards |
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floc(+0) = fbar(+0+ir) |
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floc(-1) = floc(+0) + |
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& mask(ir-1)*(fbar(ir-1)-floc(+0)) |
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C ================ calc. 1st & 2nd derivatives over masked stencil |
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ohat(+1,ir) = floc(+0)*0.50 _d 0 |
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& - floc(-1)*0.50 _d 0 |
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ohat(+2,ir) = 0. _d 0 |
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end if |
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end if |
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return |
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c end subroutine GAD_OSC_LOC_R |
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end |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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SUBROUTINE GAD_OSC_HAT_R(bi,bj,ix,iy, |
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& mask,fbar,ohat,myThid) |
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C |================================================================| |
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C | OSC_HAT_R: compute WENO oscillation derivatives in R. | |
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C |================================================================| |
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implicit none |
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C =============================================== global variables |
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# include "SIZE.h" |
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C ====================================================== arguments |
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integer bi,bj,ix,iy |
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_RL mask(1-3:Nr+3) |
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_RL fbar(1-3:Nr+3) |
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_RL ohat(1:2, |
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& 1-3:Nr+3) |
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integer myThid |
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C ====================================================== variables |
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integer ir |
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C ================================ derivatives for WENO indicators |
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do ir = +1-3, Nr+3 |
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CALL GAD_OSC_LOC_R(ir,mask,fbar,ohat) |
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end do |
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return |
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c end subroutine GAD_OSC_HAT_R |
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end |
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