|
| 1 | +Re = 1.375e4 |
| 2 | +density = 1 # kg cm-3 |
| 3 | +D = 1 |
| 4 | +inlet = 1 |
| 5 | +viscosity = '${fparse density * inlet * D / Re}' # dynamic viscosity, mu = nu * rho, kg cm-1 s-1 |
| 6 | +alpha = 0.33333 # INS SUPG and PSPG stabilization parameter |
| 7 | + |
| 8 | +[GlobalParams] |
| 9 | + integrate_p_by_parts = false |
| 10 | + viscous_form = 'traction' |
| 11 | + pressure = p |
| 12 | + velocity = vel |
| 13 | +[] |
| 14 | + |
| 15 | +[Mesh] |
| 16 | + [channel] |
| 17 | + type = CartesianMeshGenerator |
| 18 | + dim = 2 |
| 19 | + dx = '0.05 0.2 19.75' |
| 20 | + dy = '0.3 0.1 0.05 0.05' |
| 21 | + ix = '20 1 79' |
| 22 | + iy = '10 5 5 10' |
| 23 | + [] |
| 24 | + [corner_node] |
| 25 | + type = ExtraNodesetGenerator |
| 26 | + input = channel |
| 27 | + new_boundary = 'pinned_node' |
| 28 | + coord = '20 0.5' |
| 29 | + [] |
| 30 | +[] |
| 31 | + |
| 32 | +[Problem] |
| 33 | + type = FEProblem |
| 34 | +[] |
| 35 | + |
| 36 | +[Variables] |
| 37 | + [vel] |
| 38 | + family = LAGRANGE_VEC |
| 39 | + order = FIRST |
| 40 | + [] |
| 41 | + [p] |
| 42 | + [] |
| 43 | + [mu_tilde] |
| 44 | + initial_condition = '${fparse viscosity * 5}' |
| 45 | + [] |
| 46 | +[] |
| 47 | + |
| 48 | +[AuxVariables] |
| 49 | + [mu_turbulence] |
| 50 | + [] |
| 51 | + [wall_dist] |
| 52 | + [] |
| 53 | + [velx] |
| 54 | + [] |
| 55 | + [vely] |
| 56 | + [] |
| 57 | + [wall_shear_stress] |
| 58 | + family = MONOMIAL |
| 59 | + order = CONSTANT |
| 60 | + [] |
| 61 | + [turbulent_stress] |
| 62 | + family = MONOMIAL |
| 63 | + order = CONSTANT |
| 64 | + [] |
| 65 | +[] |
| 66 | + |
| 67 | +[Kernels] |
| 68 | + [mass] |
| 69 | + type = INSADMass |
| 70 | + variable = p |
| 71 | + [] |
| 72 | + [mass_pspg] |
| 73 | + type = INSADMassPSPG |
| 74 | + variable = p |
| 75 | + [] |
| 76 | + [momentum_advection] |
| 77 | + type = INSADMomentumAdvection |
| 78 | + variable = vel |
| 79 | + [] |
| 80 | + [momentum_viscous] |
| 81 | + type = INSADMomentumViscous |
| 82 | + variable = vel |
| 83 | + [] |
| 84 | + [momentum_turbulent_viscous] |
| 85 | + type = INSADMomentumTurbulentViscous |
| 86 | + variable = vel |
| 87 | + mu_tilde = mu_tilde |
| 88 | + [] |
| 89 | + [momentum_pressure] |
| 90 | + type = INSADMomentumPressure |
| 91 | + variable = vel |
| 92 | + [] |
| 93 | + [momentum_supg] |
| 94 | + type = INSADMomentumSUPG |
| 95 | + variable = vel |
| 96 | + [] |
| 97 | + [momentum_time] |
| 98 | + type = INSADMomentumTimeDerivative |
| 99 | + variable = vel |
| 100 | + [] |
| 101 | + |
| 102 | + [mu_tilde_time] |
| 103 | + type = SATimeDerivative |
| 104 | + variable = mu_tilde |
| 105 | + [] |
| 106 | + [mu_tilde_space] |
| 107 | + type = SATurbulentViscosity |
| 108 | + variable = mu_tilde |
| 109 | + [] |
| 110 | + [mu_tilde_supg] |
| 111 | + type = SATurbulentViscositySUPG |
| 112 | + variable = mu_tilde |
| 113 | + [] |
| 114 | +[] |
| 115 | + |
| 116 | +[AuxKernels] |
| 117 | + [mu_space] |
| 118 | + type = SATurbulentViscosityAux |
| 119 | + variable = mu_turbulence |
| 120 | + mu_tilde = mu_tilde |
| 121 | + [] |
| 122 | + [wall_distance] |
| 123 | + type = WallDistanceAux |
| 124 | + variable = wall_dist |
| 125 | + walls = 'top' |
| 126 | + execute_on = initial |
| 127 | + [] |
| 128 | + [velx] |
| 129 | + type = VectorVariableComponentAux |
| 130 | + variable = velx |
| 131 | + vector_variable = vel |
| 132 | + component = x |
| 133 | + [] |
| 134 | + [vely] |
| 135 | + type = VectorVariableComponentAux |
| 136 | + variable = vely |
| 137 | + vector_variable = vel |
| 138 | + component = y |
| 139 | + [] |
| 140 | + [wall_shear_stress] |
| 141 | + type = WallShearStressAux |
| 142 | + variable = wall_shear_stress |
| 143 | + boundary = top |
| 144 | + [] |
| 145 | + [turbulent_stress] |
| 146 | + type = TurbulentStressAux |
| 147 | + variable = turbulent_stress |
| 148 | + mu_tilde = mu_tilde |
| 149 | + [] |
| 150 | +[] |
| 151 | + |
| 152 | +[Functions] |
| 153 | + [xfunc] |
| 154 | + type = ParsedFunction |
| 155 | + expression = '${fparse inlet}' |
| 156 | + [] |
| 157 | + [mu_func] |
| 158 | + type = ParsedFunction |
| 159 | + expression = 'if(y=0.5, 0, ${fparse viscosity * 5})' |
| 160 | + [] |
| 161 | +[] |
| 162 | + |
| 163 | +[ICs] |
| 164 | + [velocity] |
| 165 | + type = VectorFunctionIC |
| 166 | + function_x = xfunc |
| 167 | + function_y = 0 |
| 168 | + variable = vel |
| 169 | + [] |
| 170 | +[] |
| 171 | + |
| 172 | +[BCs] |
| 173 | + [no_slip] |
| 174 | + type = ADVectorFunctionDirichletBC |
| 175 | + variable = vel |
| 176 | + boundary = 'top' |
| 177 | + function_x = 0 |
| 178 | + function_y = 0 |
| 179 | + [] |
| 180 | + [inlet] |
| 181 | + type = ADVectorFunctionDirichletBC |
| 182 | + variable = vel |
| 183 | + boundary = 'left' |
| 184 | + function_x = xfunc |
| 185 | + function_y = 0 |
| 186 | + [] |
| 187 | + [outlet] |
| 188 | + type = INSADMomentumTurbulentNoBCBC |
| 189 | + variable = vel |
| 190 | + boundary = 'right' |
| 191 | + mu_tilde = mu_tilde |
| 192 | + [] |
| 193 | + [outlet_supg] |
| 194 | + type = INSADMomentumSUPGBC |
| 195 | + variable = vel |
| 196 | + boundary = 'right' |
| 197 | + [] |
| 198 | + [outlet_pspg] |
| 199 | + type = INSADMassPSPGBC |
| 200 | + variable = p |
| 201 | + boundary = 'right' |
| 202 | + [] |
| 203 | + [symmetry] |
| 204 | + type = ADVectorFunctionDirichletBC |
| 205 | + variable = vel |
| 206 | + boundary = 'bottom' |
| 207 | + set_x_comp = false |
| 208 | + function_y = 0 |
| 209 | + [] |
| 210 | + |
| 211 | + [pressure_pin] |
| 212 | + type = DirichletBC |
| 213 | + variable = p |
| 214 | + boundary = 'pinned_node' |
| 215 | + value = 0 |
| 216 | + [] |
| 217 | + |
| 218 | + [mu_inlet] |
| 219 | + type = FunctionDirichletBC |
| 220 | + variable = mu_tilde |
| 221 | + boundary = 'left' |
| 222 | + function = mu_func |
| 223 | + [] |
| 224 | + [mu_wall] |
| 225 | + type = DirichletBC |
| 226 | + variable = mu_tilde |
| 227 | + boundary = 'top' |
| 228 | + value = 0 |
| 229 | + [] |
| 230 | + [mu_outlet] |
| 231 | + type = SATurbulentViscosityNoBCBC |
| 232 | + variable = mu_tilde |
| 233 | + boundary = 'right' |
| 234 | + [] |
| 235 | + [mu_outlet_supg] |
| 236 | + type = SATurbulentViscositySUPGBC |
| 237 | + variable = mu_tilde |
| 238 | + boundary = 'right' |
| 239 | + [] |
| 240 | +[] |
| 241 | + |
| 242 | +[Materials] |
| 243 | + [ad_mat] |
| 244 | + type = ADGenericConstantMaterial |
| 245 | + prop_names = 'rho mu' |
| 246 | + prop_values = '${density} ${viscosity}' |
| 247 | + [] |
| 248 | + [sa_mat] |
| 249 | + type = SATauMaterial |
| 250 | + alpha = ${alpha} |
| 251 | + mu_tilde = mu_tilde |
| 252 | + wall_distance_var = wall_dist |
| 253 | + use_ft2_term = true |
| 254 | + [] |
| 255 | +[] |
| 256 | + |
| 257 | +[Executioner] |
| 258 | + type = Transient |
| 259 | + |
| 260 | + solve_type = 'NEWTON' |
| 261 | + petsc_options = '-snes_converged_reason -ksp_converged_reason -snes_linesearch_monitor' |
| 262 | + petsc_options_iname = '-pc_type -pc_factor_shift_type -pc_factor_mat_solver_package' |
| 263 | + petsc_options_value = 'lu NONZERO superlu_dist' |
| 264 | + line_search = none |
| 265 | + |
| 266 | + automatic_scaling = true |
| 267 | + compute_scaling_once = false |
| 268 | + resid_vs_jac_scaling_param = 0.1 |
| 269 | + scaling_group_variables = 'vel; p; mu_tilde' |
| 270 | + off_diagonals_in_auto_scaling = true |
| 271 | + |
| 272 | + nl_rel_tol = 1e-8 |
| 273 | + nl_abs_tol = 1e-14 |
| 274 | + nl_max_its = 10 |
| 275 | + |
| 276 | + start_time = 0.0 |
| 277 | + end_time = 6 |
| 278 | + dtmin = 1.0 |
| 279 | + dtmax = 10 |
| 280 | + [TimeStepper] |
| 281 | + type = IterationAdaptiveDT |
| 282 | + dt = 1e-0 |
| 283 | + cutback_factor = 0.9 |
| 284 | + growth_factor = 1.1 |
| 285 | + optimal_iterations = 6 |
| 286 | + iteration_window = 1 |
| 287 | + linear_iteration_ratio = 1000 |
| 288 | + [] |
| 289 | +[] |
| 290 | + |
| 291 | +[Preconditioning] |
| 292 | + [SMP] |
| 293 | + type = SMP |
| 294 | + full = true |
| 295 | + [] |
| 296 | +[] |
| 297 | + |
| 298 | +[Outputs] |
| 299 | + [exodus] |
| 300 | + type = Exodus |
| 301 | + execute_on = final |
| 302 | + [] |
| 303 | +[] |
| 304 | + |
| 305 | +[Debug] |
| 306 | + show_var_residual_norms = true |
| 307 | +[] |
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