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sunfluidh:2d_channel_flow_incomp_flow

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input3d.dat
===========================================================================
===========================================================================
            MAIN INPUT DATA FILE : 2D CHANNEL FLOW
                                   INCOMPRESSIBLE
                                   ISOTHERM
 
            DIMENSIONLESS LAYOUT :
 
                 Length scale     : h (the channel height)
                 Reynolds number    Re_h= rho_0.U_0.h/nu= 100
 
                 dimensionless quantities :
                   velocity U*      = U/U_0
                   kinetic viscosity= 1/Re_h
 
                 dimensionless domain : Lx/h= 10
 
                 Initialisation = uniform velocity field
                 inlet flowrate = uniform profil
 
 
 
------------------------------------------
 
---> inflow                   outflow --->
 
------------------------------------------
J
^
|
|
---->I
===========================================================================
===========================================================================
&Version File_Version="VERSION2.0"/
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
                     GENERAL LAYOUT
                     (DIMENSIONLESS)
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
&Fluid_Properties         Reference_Dynamic_Viscosity = 1.00D-02, Reference_Density= 1.0 /
 
&Velocity_Initialization  I_Velocity_Reference_Value  = 1.0 , J_Velocity_Reference_Value = 0.0 , K_Velocity_Reference_Value = 0.0 /
===========================================================================
                    DOMAIN FEATURES
                     (DIMENSIONLESS)
===========================================================================
&Domain_Features Start_Coordinate_I_Direction= 0.00 , End_Coordinate_I_Direction= 10.00,
                 Start_Coordinate_J_Direction= 0.00 , End_Coordinate_J_Direction= 1.00,
                 Start_Coordinate_K_Direction= 0.00 , End_Coordinate_K_Direction= 0.00,
                 Cells_Number_I_Direction= 128 ,Cells_Number_J_Direction= 32 ,Cells_Number_K_Direction= 1,
                 Regular_Mesh= .true. /
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
              DEFINITION OF BOUNDARY CONDITIONS
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
=============================================================================
                 WALL BOUNDARY CONDITION SETUP
                     (DIMENSIONLESS)
=============================================================================
Not really necessary (Default wall boundary conditions for the velocity are used, no heat transfer)
 
=============================================================================
               INLET AND OUTLET  BOUNDARY CONDITIONS
                     (DIMENSIONLESS)
=============================================================================
Keep in mind that the domain is enclosed by default. 
Here the inlet and outlet conditions are located at the ends of the domain. They replace the walls by default over the insterested areas.
 
&Inlet_Boundary_Conditions  Type_of_BC= "INLET", Direction_Normal_Plan= 1 , Flow_Direction= 1 ,
                            Plan_Location_Coordinate=  0.0    ,
                            Start_Coordinate_of_First_Span =  0.00  ,  End_Coordinate_of_First_Span = 1.00 ,
                            Start_Coordinate_of_Second_Span= 0.0    ,  End_Coordinate_of_Second_Span= 0.0  ,
                            Normal_Velocity_Reference_Value= 1.0 /
 
Outlet : Mass flowrate conservation
 
&Outlet_Boundary_Conditions  Type_of_BC= "OUTLET", Direction_Normal_Plan= 1 , Flow_Direction= 1 ,
                             Plan_Location_Coordinate=  10.0   ,
                             Start_Coordinate_of_First_Span =  0.00  ,  End_Coordinate_of_First_Span = 1.00 ,
                             Start_Coordinate_of_Second_Span= 0.0    ,  End_Coordinate_of_Second_Span= 0.0  /
 
=============================================================================
               BORDER BOUNDARY CONDITIONS
=============================================================================
!--- No new boundary conditions are defined at the ends of the domain : walls by default are preserved, the inlet and outlet previously are defined above)
 
&Border_Domain_Boundary_Conditions West_BC_Name= "None" , East_BC_Name= "None" , Back_BC_Name= "None" , Front_BC_Name= "None" / 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
                   NUMERICAL METHODS
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
&Numerical_Methods  NS_NumericalMethod= "BDF2-SchemeO2"                         ,  !--- BDF2 + 2nd order centered scheme
                    MomentumConvection_Scheme="Centered-O2-Conservative"        ,  !--- conservative form for solving the velocity (momentum) equation
                    Poisson_NumericalMethod="Home-SORMultigrid-ConstantMatrixCoef"  / !--- SOR  + multigrid method (homemade release) for solving the Poisson's equation with constant coefficient matrix                    
 
&HomeData_PoissonSolver  SolverName="SOR"                ,         !--- Successive Over-Relaxation (SOR) method based on the red-black algorithm 
                            Relaxation_Coefficient= 1.8  ,         !--- Relaxation coefficient of the SOR method ( 1 <= Relaxation_Coefficient < 2)
                            Number_max_Grid= 4,                    !--- Number of grid levels
                            Number_max_Cycle= 10,                   !--- Number of multigrid cycles
                            Number_Iteration= 0,                   !--- Maximum number of SOR iterations method applied for any grid level, if 0 (or removed) the 3 next data are considered
                            Number_Iteration_FineToCoarseGrid= 15, !--- number of SOR iterations applied on any grid level during the restriction step (before the coarsest grid computation)
                            Number_Iteration_CoarseToFineGrid= 15, !--- number of SOR iterations applied on any grid level during the prolongation step (after the Coarsest grid computation)
                            Number_Iteration_CoarsestGrid= 15 ,    !--- number of SOR iterations applied on the coarsest grid
                            Convergence_Criterion= 1.D-08 /        !--- convergence tolerance on the residu of the Poisson's equation   
 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
                   SIMULATION MANAGEMENT
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
The numerical time step is imposed
 
&Simulation_Management    Restart_Parameter= 0 ,
                          Steady_Flow_Stopping_Criterion_Enabled = .true. , Steady_Flow_Stopping_Criterion = 1.D-16,
                          Temporal_Iterations_Number = 100000                  , Final_Time = 5.D+01  ,
                          TimeStep_Type = 0 ,
                          Timestep_Max = 1.D-03 ,
                          Simulation_Backup_Rate                 = 1000   , Simulation_Checking_Rate = 101 /
=============================================================================
                   PROBES MANAGEMENT
=============================================================================
 
                                                     Probes order    U    , V     , W      , T      , P      , RHO
&Probe_Quantities_Enabled  Temporal_Series_For_Quantity_Enabled(:) = .true., .true., .false., .false., .true. , .false. /
 
&Probe_Location  Xi= 3.0 , Xj= 0.5 , Xk= 0.0  /
&Probe_Location  Xi= 6.0 , Xj= 0.5 , Xk= 0.0 /
&Simulation_Management  Probe_TimeIterationRecordingRate= 1   , 
                        Probe_StartTimeIterationRecording= 0  ,
                        Probe_RecordingReset=.false. /
 
=============================================================================
           FIELDS RECORDING SETUP
=============================================================================
&Field_Recording_Setup    Precision_On_Instantaneous_Fields= 2 /
 
!--- Snapshots
 
&Simulation_Management
    InstantaneousFields_RecordingReset=.false.     ,       
    InstantaneousFields_TimeRecordingRate= 2.0E+00 ,
    InstantaneousFields_RecordingStartTime= 0.D-00  /
 
&Instantaneous_Fields_Listing  Name_of_Field = "U     " /      First velocity component
&Instantaneous_Fields_Listing  Name_of_Field = "V     " /      Second velocity component
 
!--- Statistics
 
 
END OF FILE

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sunfluidh/2d_channel_flow_incomp_flow.txt · Dernière modification: 2019/11/13 16:33 de yann