1 | subroutine energetics(u,v,w,pd,uc,vc,wc,wnx,wny,wnz, |
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2 | * U0,Lx,Ly,Lz,f,g,rho_0,DGRAD,Re,kappa,nu, |
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3 | * nx,ny,nz,num_dims,bc_flag,force_flag,time, |
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4 | * comm,myid,numprocs,locnx,locnz,ambient_density) |
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5 | |
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6 | c Modified for parallel execution under MPI, KW, 8/24/00 |
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7 | c N.B. All processors recieve the global summation results |
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8 | c when done using MPI_ALL_REDUCE. |
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9 | c |
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10 | c Routine to compute and output physical space, volume averaged |
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11 | c energetics diagnostics. Input fields are dimensionless, outputs |
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12 | c are in dimensional units. Transforms of u,v and w are stored |
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13 | c in uc, vc and wc respectively. |
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14 | c |
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15 | implicit none |
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16 | #include "mpif.h" |
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17 | integer comm,myid,numprocs,locnx,locnz,ierr,ktop |
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18 | integer i,j,k,nx,ny,nz,num_dims,nyplanes,nzplanes |
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19 | real Lx,Ly,Lz,U0,f,g,rho_0,DGRAD,Re,x,y,z,density_scale |
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20 | real dx,dy,dz,dA,dV,Vol,time,kappa,nu,fac,N2 |
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21 | real rho_bar,ddz,junk |
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22 | character*80 bc_flag |
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23 | character*3 force_flag |
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24 | c Physical space storage locations |
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25 | real u(nx+2,ny+1,locnz+1),v(nx+2,ny+1,locnz+1) |
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26 | real w(nx+2,ny+1,locnz+1),pd(nx+2,ny+1,locnz+1) |
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27 | real ambient_density(nx+2,ny+1,locnz+1) |
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28 | c Wavenumber space storage locations |
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29 | complex uc(locnx,ny+1,nz+1),vc(locnx,ny+1,nz+1),wc(locnx,ny+1,nz+1) |
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30 | real wnx(locnx),wny(ny+1),wnz(nz+1) |
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31 | real*8 ke,pe,bf,rho,kappa2,diss,Ep_surf_adv,Ep_surf_dif,rho_top |
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32 | real*8 rho_bottom,zgrad,phi_i,phi_a,global_val,xmag,xnorm |
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33 | real*8 ke_forced,pe_forced |
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34 | real F1,F2,F3,F4,F5 |
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35 | |
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36 | real s1_scale |
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37 | s1_scale=1.0 |
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38 | |
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39 | c THIS NEEDS TO BE UPDATED FROM PD TO T/S LOGIC FOR DENSITY |
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40 | |
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41 | c |
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42 | c preliminaries: |
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43 | c |
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44 | |
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45 | dx = Lx/float(nx) ! [m] |
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46 | dz = Lz/float(nz) ! [m] |
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47 | ke = 0.d0 |
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48 | pe = 0.d0 |
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49 | ke_forced = 0.d0 |
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50 | pe_forced = 0.d0 |
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51 | bf = 0.d0 |
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52 | diss = 0.d0 |
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53 | rho_top = 0.d0 |
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54 | rho_bottom = 0.d0 |
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55 | Ep_surf_dif=0.d0 |
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56 | Ep_surf_adv=0.d0 |
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57 | zgrad=0.d0 |
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58 | density_scale = DGRAD*Lz |
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59 | |
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60 | if( num_dims .eq. 2 ) then |
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61 | nyplanes = 1 |
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62 | dy = 1.0 ! [m] work per unit length in infinite y direction |
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63 | Vol = Lx*1.*Lz ! [m^3] |
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64 | dV = dx*dy*dz ! [m^3] |
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65 | elseif( num_dims .eq. 3 ) then |
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66 | nyplanes = ny |
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67 | dy = Ly/float(ny) ! [m] |
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68 | Vol = Lx*Ly*Lz ! [m^3] |
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69 | dV = dx*dy*dz ! [m^3] |
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70 | endif |
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71 | |
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72 | |
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73 | c N.B. work with dimensionless quantities ONLY within (ijk-xyz) loop |
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74 | c horizontally periodic bcs imply <w>_xy=0 --> perturbation |
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75 | c density can be used rather than rho_total to compute buoy. flux |
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76 | |
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77 | if( bc_flag .eq. 'zperiodic' ) then |
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78 | |
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79 | c volume integrals calculated in physical space, |
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80 | c each processor integrates over its assigned data space |
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81 | |
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82 | c z*pd is not periodic so this form of integration is not quite right for pe |
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83 | c at bottom and at "missing" top", the weighting should be 1/2 |
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84 | c OK to have fac=1 at bottom since z=0 anyway, need to add the top bit |
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85 | c note that pd(top)=pd(1) by periodicity, so add this when k=1, {z}=1 |
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86 | |
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87 | do k=1,locnz |
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88 | z = myid*locnz*dz/Lz + (k-1.)*dz/Lz ! dz is dimensional |
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89 | if( k .eq. 1 ) then |
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90 | fac=0.5 |
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91 | else |
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92 | fac=0.0 |
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93 | endif |
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94 | do j=1,nyplanes |
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95 | do i=1,nx |
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96 | rho = pd(i,j,k) |
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97 | ke = ke + ( u(i,j,k)**2 + v(i,j,k)**2 + w(i,j,k)**2 ) |
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98 | pe = pe + rho*z + fac*rho*1.0 ! 1.0 is dless z at top |
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99 | bf = bf + pd(i,j,k)*w(i,j,k) |
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100 | enddo |
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101 | enddo |
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102 | enddo |
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103 | |
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104 | if(force_flag .eq. 'yes' ) then |
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105 | do k=1,locnz |
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106 | z = myid*locnz*dz/Lz + (k-1.)*dz/Lz ! dz is dimensional |
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107 | do j=1,nyplanes |
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108 | do i=1,nx |
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109 | x=(i-1.)*dx |
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110 | y=(j-1.)*dy |
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111 | call user_defined_forcing(x,y,z,time,F1,F2,F3,F4,F5,Lx,Ly,Lz,f,g,rho_0) |
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112 | ke_forced = ke_forced + ( u(i,j,k)*F1 + v(i,j,k)*F2 + w(i,j,k)*F3 )/(U0**2/Lz) ! make F_i dless |
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113 | pe_forced = pe_forced + ( (z/Lz)*F4/(density_scale/(Lz/U0)) ) |
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114 | enddo |
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115 | enddo |
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116 | enddo |
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117 | endif |
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118 | |
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119 | c Do global sums using MPI_ALLREDUCE |
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120 | call MPI_ALLREDUCE(ke,global_val,1,MPI_DOUBLE_PRECISION,MPI_SUM,comm,ierr) |
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121 | ke=global_val |
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122 | call MPI_ALLREDUCE(pe,global_val,1,MPI_DOUBLE_PRECISION,MPI_SUM,comm,ierr) |
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123 | pe=global_val |
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124 | call MPI_ALLREDUCE(bf,global_val,1,MPI_DOUBLE_PRECISION,MPI_SUM,comm,ierr) |
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125 | bf=global_val |
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126 | |
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127 | if(force_flag .eq. 'yes' ) then |
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128 | call MPI_ALLREDUCE(ke_forced,global_val,1,MPI_DOUBLE_PRECISION,MPI_SUM,comm,ierr) |
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129 | ke_forced=global_val |
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130 | call MPI_ALLREDUCE(pe_forced,global_val,1,MPI_DOUBLE_PRECISION,MPI_SUM,comm,ierr) |
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131 | pe_forced=global_val |
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132 | endif |
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133 | |
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134 | c |
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135 | c surface integrals calculated in physical space |
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136 | c |
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137 | ! for pd, z=Lz, by periodicity |
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138 | do j=1,nyplanes |
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139 | do i=1,nx |
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140 | if( myid .eq. 0 ) then |
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141 | rho_top=rho_top + pd(i,j,1) ! perturbation density at top by periodicity |
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142 | rho_bottom=rho_bottom + ( ambient_density(i,j,1) + pd(i,j,1) ) |
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143 | Ep_surf_adv=Ep_surf_adv + pd(i,j,1)*w(i,j,1) ! z=0 at bottom, --> accumulate ddz(pd) at top only |
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144 | zgrad = zgrad + (pd(i,j,2)-pd(i,j,1))/(dz/Lz) ! =~ ddz (pd) at top by periodicity |
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145 | endif |
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146 | if( myid .eq. numprocs-1 ) then |
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147 | rho_top=rho_top + ambient_density(i,j,locnz+1) ! rho_bar at top |
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148 | rho_bottom=rho_bottom + 0.0 |
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149 | Ep_surf_adv=Ep_surf_adv + 0.0 |
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150 | zgrad = zgrad + (ambient_density(i,j,locnz+1)-ambient_density(i,j,locnz))/(dz/Lz) ! ~ ddz(rho_bar) at top |
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151 | endif |
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152 | enddo |
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153 | enddo |
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154 | |
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155 | c Do global sums using MPI_ALLREDUCE |
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156 | call MPI_ALLREDUCE(rho_top,global_val,1,MPI_DOUBLE_PRECISION,MPI_SUM,comm,ierr) |
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157 | rho_top=global_val |
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158 | call MPI_ALLREDUCE(rho_bottom,global_val,1,MPI_DOUBLE_PRECISION,MPI_SUM,comm,ierr) |
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159 | rho_bottom=global_val |
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160 | call MPI_ALLREDUCE(Ep_surf_adv,global_val,1,MPI_DOUBLE_PRECISION,MPI_SUM,comm,ierr) |
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161 | Ep_surf_adv=global_val |
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162 | |
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163 | call MPI_ALLREDUCE(zgrad,global_val,1,MPI_DOUBLE_PRECISION,MPI_SUM,comm,ierr) |
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164 | zgrad=global_val/(nx*nyplanes) |
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165 | |
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166 | Ep_surf_adv=Ep_surf_adv/(nx*nyplanes) |
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167 | Ep_surf_dif=zgrad |
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168 | phi_i=(rho_top-rho_bottom)/(nx*nyplanes) |
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169 | |
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170 | |
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171 | |
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172 | c volume integrals calculated in spectral space |
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173 | c |
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174 | xnorm = 1./2. ! normalization for fff transforms |
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175 | do i=1,locnx |
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176 | if( i .eq. 1 .and. myid .eq. 0 ) then |
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177 | fac=xnorm*1.0 ! add zero wavenumber component once |
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178 | else |
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179 | fac=xnorm*2.0 ! all other modes have complex conjugate pairs |
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180 | endif |
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181 | do j=1,nyplanes |
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182 | do k=1,nz |
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183 | kappa2 = wnx(i)**2 + wny(j)**2 + wnz(k)**2 |
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184 | xmag = cabs(uc(i,j,k))**2 + cabs(vc(i,j,k))**2 + cabs(wc(i,j,k))**2 |
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185 | diss = diss - fac*(1./Re)*kappa2*xmag |
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186 | enddo |
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187 | enddo |
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188 | enddo |
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189 | |
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190 | c Do global sums using MPI_ALLREDUCE |
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191 | call MPI_ALLREDUCE(diss,global_val,1,MPI_DOUBLE_PRECISION,MPI_SUM,comm,ierr) |
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192 | diss=global_val |
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193 | |
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194 | elseif( bc_flag .eq. 'zslip' ) then |
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195 | c |
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196 | c volume integrals calculated in physical space |
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197 | c |
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198 | do k=1,locnz |
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199 | z = myid*locnz*dz/Lz + (k-1.)*dz/Lz ! dz is dimensional, we need dless z for pe |
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200 | fac=1.0 |
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201 | if( k .eq. 1 .and. myid .eq. 0 ) fac=0.5 ! see below |
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202 | do j=1,nyplanes |
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203 | do i=1,nx |
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204 | rho = pd(i,j,k) |
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205 | ke = ke + fac*( u(i,j,k)**2 + v(i,j,k)**2 + w(i,j,k)**2 ) |
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206 | pe = pe + fac*rho*z |
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207 | bf = bf + fac*pd(i,j,k)*w(i,j,k) |
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208 | enddo |
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209 | enddo |
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210 | enddo |
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211 | |
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212 | if(force_flag .eq. 'yes' ) then |
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213 | do k=1,locnz |
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214 | z = myid*locnz*dz + (k-1.)*dz ! we need dimensional position |
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215 | fac=1.0 |
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216 | if( k .eq. 1 .and. myid .eq. 0 ) fac=0.5 ! see below |
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217 | do j=1,nyplanes |
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218 | do i=1,nx |
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219 | x=(i-1.)*dx |
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220 | y=(j-1.)*dy |
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221 | call user_defined_forcing(x,y,z,time,F1,F2,F3,F4,F5,Lx,Ly,Lz,f,g,rho_0) |
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222 | ke_forced = ke_forced + fac*( u(i,j,k)*F1 + v(i,j,k)*F2 + w(i,j,k)*F3 )/(U0**2/Lz) ! make F_i dless |
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223 | pe_forced = pe_forced + fac*( (z/Lz)*F4/(density_scale/(Lz/U0)) ) |
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224 | enddo |
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225 | enddo |
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226 | enddo |
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227 | endif |
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228 | |
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229 | c Uppermost processor must add in z=Lz contribution |
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230 | c Give only 1/2 weight to end point of closed interval |
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231 | if (myid .eq. numprocs-1) then |
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232 | fac=0.5 |
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233 | k=locnz+1 |
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234 | z = 1.0 ! d'less |
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235 | do j=1,nyplanes |
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236 | do i=1,nx |
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237 | rho = pd(i,j,k) |
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238 | ke = ke + fac*( u(i,j,k)**2 + v(i,j,k)**2 + w(i,j,k)**2 ) |
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239 | pe = pe + fac*rho*z |
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240 | bf = bf + fac*pd(i,j,k)*w(i,j,k) |
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241 | enddo |
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242 | enddo |
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243 | endif |
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244 | |
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245 | if(force_flag .eq. 'yes' ) then |
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246 | c Uppermost processor must add in z=Lz contribution |
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247 | c Give only 1/2 weight to end point of closed interval |
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248 | if (myid .eq. numprocs-1) then |
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249 | fac=0.5 |
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250 | k=locnz+1 |
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251 | z = Lz ! we need dimensional position |
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252 | do j=1,nyplanes |
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253 | do i=1,nx |
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254 | x=(i-1.)*dx |
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255 | y=(j-1.)*dy |
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256 | call user_defined_forcing(x,y,z,time,F1,F2,F3,F4,F5,Lx,Ly,Lz,f,g,rho_0) |
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257 | ke_forced = ke_forced + fac*( u(i,j,k)*F1 + v(i,j,k)*F2 + w(i,j,k)*F3 )/(U0**2/Lz) ! make F_i dless |
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258 | pe_forced = pe_forced + fac*( (z/Lz)*F4/(density_scale/(Lz/U0)) ) |
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259 | enddo |
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260 | enddo |
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261 | endif |
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262 | endif |
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263 | |
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264 | c Do global sums using MPI_ALLREDUCE |
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265 | call MPI_ALLREDUCE(ke,global_val,1,MPI_DOUBLE_PRECISION,MPI_SUM,comm,ierr) |
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266 | ke=global_val |
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267 | call MPI_ALLREDUCE(pe,global_val,1,MPI_DOUBLE_PRECISION,MPI_SUM,comm,ierr) |
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268 | pe=global_val |
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269 | call MPI_ALLREDUCE(bf,global_val,1,MPI_DOUBLE_PRECISION,MPI_SUM,comm,ierr) |
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270 | bf=global_val |
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271 | |
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272 | if( force_flag .eq. 'yes' ) then |
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273 | call MPI_ALLREDUCE(ke_forced,global_val,1,MPI_DOUBLE_PRECISION,MPI_SUM,comm,ierr) |
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274 | ke_forced=global_val |
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275 | call MPI_ALLREDUCE(pe_forced,global_val,1,MPI_DOUBLE_PRECISION,MPI_SUM,comm,ierr) |
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276 | pe_forced=global_val |
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277 | endif |
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278 | |
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279 | c |
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280 | c surface integrals calculated in physical space |
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281 | c |
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282 | |
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283 | do j=1,nyplanes |
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284 | do i=1,nx |
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285 | if(myid .eq. numprocs-1 ) then |
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286 | k=locnz+1 |
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287 | Ep_surf_adv=Ep_surf_adv + pd(i,j,k)*w(i,j,k) ! w=0 by bcs |
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288 | rho_top=rho_top + ( ambient_density(i,j,k) + pd(i,j,k) ) |
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289 | rho_bottom=rho_bottom + 0. |
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290 | zgrad = ( ambient_density(i,j,k)-ambient_density(i,j,k-1) )/(dz/Lz) |
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291 | * + ( pd(i,j,k)-pd(i,j,k-1) )/(dz/Lz) |
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292 | Ep_surf_dif=Ep_surf_dif + zgrad |
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293 | endif |
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294 | if( myid .eq. 0 ) then |
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295 | k=1 |
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296 | Ep_surf_adv=Ep_surf_adv + 0. |
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297 | rho_top=rho_top + 0. |
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298 | Ep_surf_dif=Ep_surf_dif + 0. |
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299 | rho_bottom=rho_bottom + ( ambient_density(i,j,k) + pd(i,j,k) ) |
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300 | endif |
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301 | enddo |
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302 | enddo |
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303 | |
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304 | |
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305 | c Do global sums using MPI_ALLREDUCE |
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306 | call MPI_ALLREDUCE(rho_top,global_val,1,MPI_DOUBLE_PRECISION,MPI_SUM,comm,ierr) |
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307 | rho_top=global_val |
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308 | call MPI_ALLREDUCE(rho_bottom,global_val,1,MPI_DOUBLE_PRECISION,MPI_SUM,comm,ierr) |
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309 | rho_bottom=global_val |
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310 | call MPI_ALLREDUCE(Ep_surf_adv,global_val,1,MPI_DOUBLE_PRECISION,MPI_SUM,comm,ierr) |
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311 | Ep_surf_adv=global_val |
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312 | call MPI_ALLREDUCE(Ep_surf_dif,global_val,1,MPI_DOUBLE_PRECISION,MPI_SUM,comm,ierr) |
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313 | Ep_surf_dif=global_val |
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314 | |
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315 | |
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316 | Ep_surf_adv=Ep_surf_adv/(nx*nyplanes) |
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317 | Ep_surf_dif=Ep_surf_dif/(nx*nyplanes) |
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318 | phi_i=(rho_top-rho_bottom)/(nx*nyplanes) |
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319 | c |
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320 | c volume integrals calculated in spectral space |
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321 | c |
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322 | xnorm = (1./nz)**2 ! normalization for ffc/s transforms |
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323 | do i=1,locnx |
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324 | if(i .eq. 1 .and. myid .eq. 0) then |
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325 | fac=1.0*xnorm ! add zero wavenumber component once |
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326 | else |
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327 | fac=2.0*xnorm ! all other modes have complex conjugate pairs |
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328 | endif |
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329 | do j=1,nyplanes |
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330 | do k=1,nz+1 |
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331 | kappa2 = wnx(i)**2 + wny(j)**2 + wnz(k)**2 |
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332 | xmag = cabs(uc(i,j,k))**2 + cabs(vc(i,j,k))**2 + cabs(wc(i,j,k))**2 |
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333 | diss = diss - fac*(1./Re)*kappa2*xmag |
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334 | enddo |
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335 | enddo |
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336 | enddo |
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337 | |
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338 | c Do global sums using MPI_ALLREDUCE |
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339 | call MPI_ALLREDUCE(diss,global_val,1,MPI_DOUBLE_PRECISION,MPI_SUM,comm,ierr) |
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340 | diss=global_val |
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341 | |
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342 | endif |
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343 | |
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344 | c |
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345 | c dimensionalize the results: energy in [J/kg], transfers in [W/kg] |
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346 | c |
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347 | ke = (0.5)*(dV/Vol)*(U0**2)*ke ! [m2/s2]=[J/kg] |
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348 | ke_forced = (dV/Vol)*(U0**3/Lz)*ke_forced ! [m2/s3]=[W/kg] |
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349 | pe = (dV/Vol)*(g/rho_0)*(density_scale*Lz)*pe ! [J/kg] |
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350 | pe_forced = (dV/Vol)*(g/rho_0)*(density_scale*U0)*pe_forced ! [W/kg] |
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351 | bf = (dV/Vol)*(g/rho_0)*(density_scale*U0)*bf ! [m2/s3]=[W/kg] |
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352 | diss = 2.0*(U0**3/Lz)*diss ! [m2/s3]=[W/kg] |
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353 | Ep_surf_adv=-(g/rho_0)*(density_scale*U0)*Ep_surf_adv ! [m2/s3]=[W/kg] |
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354 | phi_i =-((kappa*g)/(rho_0*Lz))*(density_scale)*phi_i ! [m2/s3]=[W/kg] |
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355 | Ep_surf_dif=(kappa*g/rho_0)*(density_scale/Lz)*Ep_surf_dif ! [W/kg] |
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356 | phi_a = bf |
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357 | |
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358 | c |
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359 | c write the dimensional values to an ascii data file |
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360 | c |
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361 | if( myid .eq. 0 ) then |
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362 | #ifdef F77 |
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363 | open(1,file='output/energetics',status='unknown',access='append') |
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364 | #else |
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365 | open(1,file='output/energetics',status='unknown',position='append') |
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366 | #endif F77 |
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367 | write(1,100) time,ke,pe,phi_a,diss,Ep_surf_adv,Ep_surf_dif,phi_i,ke_forced,pe_forced |
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368 | 100 format(1x,10e16.8) |
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369 | close(1) |
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370 | WRITE(6,*) time,ke,pe,ke+pe |
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371 | endif |
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372 | |
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373 | return |
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374 | end |
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