[16] | 1 | !*********************************************************************** |
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| 2 | !* Copyright 2012,2013 * |
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| 3 | !* Jerome Brioude, Delia Arnold, Andreas Stohl, Wayne Angevine, * |
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| 4 | !* John Burkhart, Massimo Cassiani, Adam Dingwell, Richard C Easter, Sabine Eckhardt,* |
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| 5 | !* Stephanie Evan, Jerome D Fast, Don Morton, Ignacio Pisso, * |
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| 6 | !* Petra Seibert, Gerard Wotawa, Caroline Forster, Harald Sodemann, * |
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| 7 | !* * |
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| 8 | !* This file is part of FLEXPART WRF * |
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| 9 | !* * |
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| 10 | !* FLEXPART is free software: you can redistribute it and/or modify * |
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| 11 | !* it under the terms of the GNU General Public License as published by* |
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| 12 | !* the Free Software Foundation, either version 3 of the License, or * |
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| 13 | !* (at your option) any later version. * |
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| 14 | !* * |
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| 15 | !* FLEXPART is distributed in the hope that it will be useful, * |
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| 16 | !* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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| 17 | !* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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| 18 | !* GNU General Public License for more details. * |
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| 19 | !* * |
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| 20 | !* You should have received a copy of the GNU General Public License * |
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| 21 | !* along with FLEXPART. If not, see <http://www.gnu.org/licenses/>. * |
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| 22 | !*********************************************************************** |
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| 23 | |
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| 24 | subroutine tke_partition_my(z, & |
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| 25 | ust,wst,ol,h,zeta,sigu,sigv,tlu,tlv,tlw, & |
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| 26 | sigw,dsigwdz,dsigw2dz,uprof,vprof,tkeprof,pttprof,indz,indzp) |
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| 27 | |
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| 28 | ! i |
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| 29 | !******************************************************************************* |
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| 30 | ! * |
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| 31 | ! Computation of \sigma_u,v,w,dsigwdz, and dsigw2dz based on TKE from WRF * |
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| 32 | ! * |
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| 33 | ! Author: A. Stohl * |
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| 34 | ! * |
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| 35 | ! 4 December 1997 * |
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| 36 | ! * |
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| 37 | !******************************************************************************* |
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| 38 | ! * |
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| 39 | ! Variables: * |
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| 40 | ! dsigwdz [1/s] vertical gradient of sigw * |
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| 41 | ! ol [m] Obukhov length * |
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| 42 | ! sigu, sigv, sigw standard deviations of turbulent velocity fluctuations * |
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| 43 | ! tlu [s] Lagrangian time scale for the along wind component. * |
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| 44 | ! tlv [s] Lagrangian time scale for the cross wind component. * |
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| 45 | ! tlw [s] Lagrangian time scale for the vertical wind component. * |
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| 46 | ! ust, ustar [m/s] friction velocity * |
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| 47 | ! wst, wstar [m/s] convective velocity scale * |
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| 48 | ! * |
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| 49 | !******************************************************************************* |
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| 50 | ! 12 JUNE 2007 compute sigu,sigv,sigw,dsigwdz, and dsigw2dz from TKE * |
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| 51 | ! fu2 fraction for u2 |
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| 52 | ! fv2 fraction for v2 |
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| 53 | ! fw2 fraction for w2 |
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| 54 | ! |
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| 55 | ! 25 JUNE 2007 merged from hanna_tke and tke_partition.f |
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| 56 | ! 11 Sep 2007 implement different formulations for growing and decaying turbulences |
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| 57 | |
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| 58 | ! include 'includepar' |
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| 59 | ! include 'includecom' |
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| 60 | ! include 'includehanna' |
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| 61 | ! include 'includeinterpol' |
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| 62 | use par_mod |
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| 63 | use com_mod |
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| 64 | ! use hanna_mod |
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| 65 | ! use interpol_mod |
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| 66 | |
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| 67 | implicit none |
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| 68 | real :: z,zzz,zzz1,dz,dz1,dz2,tke_z,dpttdz |
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| 69 | real :: fu2,fv2,fw2,ftotal,ygu,ygv,ygm,ygh,yl,ylmax,ysm,ysh |
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| 70 | real :: siguprof(2),sigvprof(2),sigwprof(2) |
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| 71 | real :: ya1 |
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| 72 | real :: ya2 |
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| 73 | real :: yb1 |
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| 74 | real :: yb2 |
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| 75 | real :: yc1 |
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| 76 | real :: yse |
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| 77 | real :: yap |
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| 78 | real :: e1,e2,e3,e4,e5,rf,rfc,rf1,rf2,ch,cm |
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| 79 | real :: er,smr,shr,dudz,dvdz,tke_mid |
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| 80 | integer :: k,indz,indzp |
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| 81 | real :: uprof(nzmax),vprof(nzmax),tkeprof(nzmax),pttprof(nzmax) |
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| 82 | real :: ust,wst,ol,h,zeta,sigu,sigv,tlu,tlv,tlw |
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| 83 | real :: sigw,dsigwdz,dsigw2dz |
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| 84 | |
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| 85 | ! data ya1,ya2,yb1,yb2,yc1,yse,yap/ |
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| 86 | ! + 0.92,0.74,16.6,10.1,0.08,0.20,0.17/ |
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| 87 | ya1=0.92 |
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| 88 | ya2=0.74 |
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| 89 | yb1=16.6 |
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| 90 | yb2=10.1 |
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| 91 | yc1=0.08 |
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| 92 | yse=0.20 |
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| 93 | yap=0.17 |
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| 94 | |
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| 95 | !- interpolate tke |
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| 96 | dz=1./(height(indzp)-height(indz)) |
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| 97 | dz1=(z - height(indz))*dz |
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| 98 | dz2=(height(indzp)-z)*dz |
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| 99 | |
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| 100 | tke_z=max(0.01,dz1*tkeprof(indzp)+dz2*tkeprof(indz)) |
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| 101 | |
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| 102 | !- compute turbulent length scale |
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| 103 | ! yl -- turbulence length scale |
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| 104 | ! ylmax -- max yl |
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| 105 | yl=0.01 |
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| 106 | ylmax=0.01 |
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| 107 | do k=1,nz-1 |
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| 108 | zzz=0.5*(height(k)+height(k+1)) |
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| 109 | zzz1=height(k+1)-height(k) |
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| 110 | yl=yl+zzz*sqrt(0.5*(tkeprof(k)+tkeprof(k+1)))*zzz1 |
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| 111 | ylmax=ylmax+zzz1*sqrt(0.5*(tkeprof(k)+tkeprof(k+1))) |
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| 112 | enddo |
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| 113 | ylmax=0.1*yl/ylmax |
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| 114 | yl=0.4*(z+0.1)/(1.0+0.4*(z+0.1)/ylmax) |
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| 115 | if (pttprof(indzp) .gt. pttprof(indz)) then |
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| 116 | |
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| 117 | dpttdz = (pttprof(indzp)-pttprof(indz))*dz |
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| 118 | |
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| 119 | yl=min(yl,0.75*sqrt(2.0*tke_z/(9.8/300.0)/dpttdz)) |
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| 120 | ! endif |
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| 121 | !- compute nondimensional vertical gradients |
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| 122 | dudz=(uprof(indzp)-uprof(indz))*dz |
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| 123 | dvdz=(vprof(indzp)-vprof(indz))*dz |
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| 124 | ygu=yl/sqrt(2.0*tke_z)*dudz |
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| 125 | ygv=yl/sqrt(2.0*tke_z)*dvdz |
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| 126 | ygm=ygu*ygu+ygv*ygv+0.001 ! in case of zero |
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| 127 | ygh=-yl*yl/2.0/tke_z*dpttdz*9.8/300.0 |
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| 128 | |
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| 129 | !-- compute SM,SH |
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| 130 | !- sm,sh nondimensional eddy diffusivities |
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| 131 | |
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| 132 | ysm=1.0-3.0*ya2*(7.0*ya1+yb2)*ygh+ & |
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| 133 | 27.0*ya1*ya2*ya2*(4*ya1+yb2)*ygh*ygh+ & |
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| 134 | 6.0*ya1*ya1*(1.0-3.0*ya2*(yb2-3.0*ya2)*ygh)*ygm |
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| 135 | ysm=ya1*(1-3*yc1-3*ya2*(yb2*(1-3*yc1)-12*ya1*yc1-3*ya2) & |
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| 136 | *ygh)/ysm |
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| 137 | |
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| 138 | ysh=ya2*(1-6*ya1*ysm*ygm)/(1-3*ya2*ygh*(4*ya1+yb2)) |
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| 139 | |
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| 140 | |
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| 141 | ! -- compute the equlibrium TKE, er |
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| 142 | e1=yb1-6.0*ya1 |
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| 143 | e2=12*ya1+yb1+3.0*yb2 |
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| 144 | e3=yb1*(1.0-3.0*yc1)-6.0*ya1 |
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| 145 | e4=yb1*(1.0-3.0*yc1)+12*ya1+9.0*ya2 |
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| 146 | e5=yb1+3.0*ya1+3.0*yb2 |
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| 147 | ch=ya2*e2/yb1 |
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| 148 | cm=ya1*e4/ya2/e5 |
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| 149 | rf1=e3/e4 |
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| 150 | rf2=e1/e5 |
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| 151 | rfc=e1/e2 |
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| 152 | rf=-(ysh/ysm)*( ygh/ygm ) |
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| 153 | ! write(*,*)'ysh,ysm',ysh,ysm |
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| 154 | ! write(*,*)'ygh,ygm,dpttdz, ptt',ygh,ygm,dpttdz,pttprof(indzp) |
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| 155 | ! if (rf .le. 0) write(*,*)'aaaaaaaaaaaaaaa' |
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| 156 | shr = 0.0 |
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| 157 | if (rf .ge. rfc) then |
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| 158 | shr=ch*1.0e-4 ! Ri > critical value, then = |
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| 159 | elseif ((1.0-rf) .ne. 0.0) then |
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| 160 | shr=ch*(rfc-rf)/(1.0-rf) |
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| 161 | endif |
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| 162 | |
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| 163 | smr = 0.0 |
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| 164 | if (rf .ge. rf1) then |
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| 165 | smr=cm*shr*1.0e-4 |
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| 166 | elseif((rf2-rf) .ne. 0.0 .and. rf .lt. rf2) then |
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| 167 | smr=cm*(rf1-rf)/(rf2-rf)*shr |
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| 168 | endif |
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| 169 | |
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| 170 | er=0.5*yb1*yl*yl*(smr*dudz*dudz*dvdz*dvdz- & |
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| 171 | shr*dpttdz*9.8/300.0) |
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| 172 | er=max(er,0.01) |
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| 173 | if (tke_z .ge. er ) then ! decaying turbuelnce |
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| 174 | tke_mid=tke_z |
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| 175 | else |
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| 176 | tke_mid=er |
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| 177 | ysm=sqrt(tke_z/er)*smr |
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| 178 | ysh=sqrt(tke_z/er)*shr |
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| 179 | endif |
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| 180 | |
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| 181 | !- fractions of u2,v2,w2 |
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| 182 | ! print*,'in tke',tke_mid,ya1,ysm,ygm,ysh,ygh,ygu |
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| 183 | fu2=0.333-2*ya1*(ysm*ygm+ysh*ygh)+6*ya1*ysm*ygu*ygu |
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| 184 | fv2=0.333-2*ya1*(ysm*ygm+ysh*ygh)+6*ya1*ysm*ygv*ygv |
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| 185 | fw2=0.333-2*ya1*(ysm*ygm+ysh*ygh)+6*ya1*ysh*ygh |
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| 186 | ! fw2=0.333-2*ya1*(ysm*ygm+ysh*ygh)+6*ya1*ysm*ygh*ygh |
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| 187 | ! fw2=fw2*0.5 |
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| 188 | if(fu2*fv2*fw2 .le. 0.0) then |
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| 189 | fu2=0.333 |
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| 190 | fv2=0.333 |
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| 191 | fw2=0.333 |
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| 192 | endif |
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| 193 | |
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| 194 | else ! test on pttprof |
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| 195 | |
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| 196 | fu2=0.333 |
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| 197 | fv2=0.333 |
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| 198 | fw2=0.333 |
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| 199 | tke_mid=tke_z |
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| 200 | endif |
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| 201 | !ftotal=(fu2+fv2+fw2) |
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| 202 | !fu2=fu2/ftotal |
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| 203 | !fv2=fv2/ftotal |
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| 204 | !fw2=fw2/ftotal |
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| 205 | |
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| 206 | ! JB: make the partitionning equal |
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| 207 | ! fu2=0.333 |
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| 208 | ! fv2=0.333 |
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| 209 | ! fw2=0.333 |
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| 210 | ! |
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| 211 | sigu=sqrt(2.0*tke_mid*fu2) |
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| 212 | sigv=sqrt(2.0*tke_mid*fv2) |
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| 213 | sigw=sqrt(2.0*tke_mid*fw2) |
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| 214 | |
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| 215 | tlu=2.0*yl/sigu |
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| 216 | tlv=2.0*yl/sigv |
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| 217 | tlw=2.0*yl/sigw |
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| 218 | |
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| 219 | tlu=max(10.,tlu) |
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| 220 | tlv=max(10.,tlv) |
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| 221 | tlw=max(30.,tlw) |
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| 222 | |
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| 223 | !- dsigw/dz,dsigw2/dz ; assuming fraction is not changed |
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| 224 | |
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| 225 | dsigwdz=(sqrt(2.0*tkeprof(indzp)*fw2)- & |
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| 226 | sqrt(2.0*tkeprof(indz)*fw2))*dz |
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| 227 | dsigwdz=max(1.0e-10,dsigwdz) |
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| 228 | |
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| 229 | dsigw2dz=(2.0*tkeprof(indzp)*fw2-2.0*tkeprof(indz)*fw2)*dz |
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| 230 | dsigw2dz=max(1.0e-10,dsigw2dz) |
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| 231 | |
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| 232 | ! write(*,*)'tke=',tke_z, 'er=',er |
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| 233 | ! write(*,*)'rfc,rf1,rf2,rf=',rfc,rf1,rf2,rf |
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| 234 | ! write(*,*)'smr=',smr,'ysm=',ysm |
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| 235 | ! write(*,*)'shr=',shr,'ysh=',ysh |
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| 236 | ! write(*,*)'fu2,fv2,fw2=',fu2,fv2,fw2 |
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| 237 | ! write(*,*)'ftotal=',ftotal |
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| 238 | ! if (fu2*fv2*fw2 .le. 0) stop |
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| 239 | end subroutine tke_partition_my |
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