1 | MODULE compute_caldyn_solver_mod |
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2 | USE grid_param, ONLY : llm |
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3 | IMPLICIT NONE |
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4 | PRIVATE |
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5 | |
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6 | PUBLIC :: compute_caldyn_solver |
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7 | |
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8 | CONTAINS |
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9 | |
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10 | SUBROUTINE compute_caldyn_solver(tau,phis, rhodz,theta,pk, geopot,W, m_il,pres, dPhi,dW,du) |
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11 | USE icosa |
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12 | USE caldyn_vars_mod |
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13 | USE trace |
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14 | USE omp_para, ONLY : ll_begin, ll_end,ll_beginp1,ll_endp1 |
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15 | USE disvert_mod, ONLY : ptop |
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16 | USE caldyn_kernels_hevi_mod |
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17 | REAL(rstd), PARAMETER :: pbot=1e5, rho_bot=1e6 |
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18 | REAL(rstd),INTENT(IN) :: tau ! "solve" Phi-tau*dPhi/dt = Phi_rhs |
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19 | REAL(rstd),INTENT(IN) :: phis(iim*jjm) |
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20 | REAL(rstd),INTENT(IN) :: rhodz(iim*jjm,llm) |
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21 | REAL(rstd),INTENT(IN) :: theta(iim*jjm,llm,nqdyn) |
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22 | REAL(rstd),INTENT(OUT) :: pk(iim*jjm,llm) |
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23 | REAL(rstd),INTENT(INOUT) :: geopot(iim*jjm,llm+1) |
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24 | REAL(rstd),INTENT(INOUT) :: W(iim*jjm,llm+1) ! OUT if tau>0 |
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25 | REAL(rstd),INTENT(OUT) :: m_il(iim*jjm,llm+1) ! rhodz averaged to interfaces |
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26 | REAL(rstd),INTENT(OUT) :: pres(iim*jjm,llm) ! pressure |
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27 | REAL(rstd),INTENT(OUT) :: dW(iim*jjm,llm+1) |
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28 | REAL(rstd),INTENT(OUT) :: dPhi(iim*jjm,llm+1) |
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29 | REAL(rstd),INTENT(OUT) :: du(3*iim*jjm,llm) |
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30 | |
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31 | REAL(rstd) :: berni(iim*jjm,llm) ! (W/m_il)^2 |
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32 | REAL(rstd) :: berni1(iim*jjm) ! (W/m_il)^2 |
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33 | !REAL(rstd) :: gamma, rho_ij, T_ij, X_ij, Y_ij, vreff, Rd, Cvd, Rd_preff |
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34 | REAL(rstd) :: gamma, rho_ij, T_ij, X_ij, Y_ij, vreff, Cvd, Rd_preff |
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35 | INTEGER :: ij, l |
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36 | |
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37 | CALL trace_start("compute_caldyn_solver") |
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38 | |
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39 | !Rd=cpp*kappa |
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40 | |
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41 | IF(dysl) THEN |
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42 | |
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43 | !$OMP BARRIER |
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44 | |
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45 | #include "../kernels_hex/caldyn_mil.k90" |
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46 | IF(tau>0) THEN ! solve implicit problem for geopotential |
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47 | CALL compute_NH_geopot(tau,phis, rhodz, m_il, theta, W, geopot) |
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48 | END IF |
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49 | #define PHI_BOT(ij) phis(ij) |
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50 | #include "../kernels_hex/caldyn_solver.k90" |
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51 | #undef PHI_BOT |
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52 | !$OMP BARRIER |
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53 | |
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54 | ELSE |
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55 | |
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56 | #define BERNI(ij) berni1(ij) |
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57 | ! FIXME : vertical OpenMP parallelism will not work |
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58 | |
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59 | ! average m_ik to interfaces => m_il |
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60 | !DIR$ SIMD |
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61 | DO ij=ij_begin_ext,ij_end_ext |
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62 | m_il(ij,1) = .5*rhodz(ij,1) |
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63 | ENDDO |
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64 | DO l=2,llm |
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65 | !DIR$ SIMD |
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66 | DO ij=ij_begin_ext,ij_end_ext |
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67 | m_il(ij,l) = .5*(rhodz(ij,l-1)+rhodz(ij,l)) |
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68 | ENDDO |
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69 | ENDDO |
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70 | !DIR$ SIMD |
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71 | DO ij=ij_begin_ext,ij_end_ext |
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72 | m_il(ij,llm+1) = .5*rhodz(ij,llm) |
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73 | ENDDO |
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74 | |
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75 | IF(tau>0) THEN ! solve implicit problem for geopotential |
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76 | CALL compute_NH_geopot(tau, phis, rhodz, m_il, theta, W, geopot) |
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77 | END IF |
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78 | |
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79 | ! Compute pressure, stored temporarily in pk |
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80 | ! kappa = R/Cp |
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81 | ! 1-kappa = Cv/Cp |
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82 | ! Cp/Cv = 1/(1-kappa) |
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83 | gamma = 1./(1.-kappa) |
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84 | DO l=1,llm |
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85 | !DIR$ SIMD |
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86 | DO ij=ij_begin_ext,ij_end_ext |
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87 | rho_ij = (g*rhodz(ij,l))/(geopot(ij,l+1)-geopot(ij,l)) |
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88 | X_ij = (cpp/preff)*kappa*theta(ij,l,1)*rho_ij |
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89 | ! kappa.theta.rho = p/exner |
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90 | ! => X = (p/p0)/(exner/Cp) |
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91 | ! = (p/p0)^(1-kappa) |
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92 | pk(ij,l) = preff*(X_ij**gamma) |
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93 | ENDDO |
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94 | ENDDO |
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95 | |
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96 | ! Update W, compute tendencies |
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97 | DO l=2,llm |
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98 | !DIR$ SIMD |
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99 | DO ij=ij_begin_ext,ij_end_ext |
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100 | dW(ij,l) = (1./g)*(pk(ij,l-1)-pk(ij,l)) - m_il(ij,l) |
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101 | W(ij,l) = W(ij,l)+tau*dW(ij,l) ! update W |
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102 | dPhi(ij,l) = g*g*W(ij,l)/m_il(ij,l) |
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103 | ENDDO |
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104 | ! PRINT *,'Max dPhi', l,ij_begin,ij_end, MAXVAL(abs(dPhi(ij_begin:ij_end,l))) |
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105 | ! PRINT *,'Max dW', l,ij_begin,ij_end, MAXVAL(abs(dW(ij_begin:ij_end,l))) |
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106 | ENDDO |
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107 | ! Lower BC (FIXME : no orography yet !) |
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108 | DO ij=ij_begin,ij_end |
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109 | dPhi(ij,1)=0 |
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110 | W(ij,1)=0 |
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111 | dW(ij,1)=0 |
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112 | dPhi(ij,llm+1)=0 ! rigid lid |
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113 | W(ij,llm+1)=0 |
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114 | dW(ij,llm+1)=0 |
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115 | ENDDO |
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116 | ! Upper BC p=ptop |
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117 | ! DO ij=ij_omp_begin_ext,ij_omp_end_ext |
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118 | ! dPhi(ij,llm+1) = W(ij,llm+1)/rhodz(ij,llm) |
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119 | ! dW(ij,llm+1) = (1./g)*(pk(ij,llm)-ptop) - .5*rhodz(ij,llm) |
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120 | ! ENDDO |
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121 | |
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122 | ! Compute Exner function (needed by compute_caldyn_fast) and du=-g^2.grad(w^2) |
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123 | DO l=1,llm |
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124 | !DIR$ SIMD |
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125 | DO ij=ij_begin_ext,ij_end_ext |
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126 | pk(ij,l) = cpp*((pk(ij,l)/preff)**kappa) ! other formulae possible if exponentiation is slow |
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127 | BERNI(ij) = (-.25*g*g)*( & |
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128 | (W(ij,l)/m_il(ij,l))**2 & |
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129 | + (W(ij,l+1)/m_il(ij,l+1))**2 ) |
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130 | ENDDO |
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131 | DO ij=ij_begin,ij_end |
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132 | du(ij+u_right,l) = ne_right*(BERNI(ij)-BERNI(ij+t_right)) |
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133 | du(ij+u_lup,l) = ne_lup *(BERNI(ij)-BERNI(ij+t_lup)) |
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134 | du(ij+u_ldown,l) = ne_ldown*(BERNI(ij)-BERNI(ij+t_ldown)) |
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135 | ENDDO |
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136 | ENDDO |
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137 | #undef BERNI |
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138 | |
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139 | END IF ! dysl |
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140 | |
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141 | CALL trace_end("compute_caldyn_solver") |
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142 | |
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143 | END SUBROUTINE compute_caldyn_solver |
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144 | |
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145 | END MODULE compute_caldyn_solver_mod |
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