Documentation du code de simulation numérique SUNFLUIDH

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===== Example of inflow/outflow boundary conditions =====
[[sunfluidh:inlet_boundary_conditions_setup_namelist|Click here for the previous page on the inlet boundary conditions]] \\
[[sunfluidh:outlet_boundary_conditions_setup_namelist|Click here for the previous page on the outlet boundary conditions]] \\
<WRAP info> 
   * This example is defined for a 2D geometrical configuration. The size of the domain is $1.5 \times 1.0.$
   * The flow is homogeneous (no multi-species gas)
   * An inlet is located at the down left side of the domain (red line on the figure).
   * An outlet is located at the top right side of the domain (green line on the figure).
   * Conditions are constant in time
</WRAP>

{{ :sunfluidh:inflow_outflow_bc.jpg?direct&600 |}}
(inlet in red line, outlet in green line, remaining walls in blue lines)


===== Inflow data =====

==== Example 1 ====
<WRAP info> 
   * The flow is homogeneous (no multi-species gas)
   * Conditions are constant in time
</WRAP>

   &Inlet_Boundary_Conditions
   Type_of_BC= "INLET", Direction_Normal_Plan= 1 ,
   Plan_Location_Coordinate= 0.0   ,
   Start_Coordinate_of_First_Span = 0.0, End_Coordinate_of_First_Span = 0.5,
   Start_Coordinate_of_Second_Span= 0.0  , End_Coordinate_of_Second_Span= 0.0 ,
   Flow_Direction= 1 ,
   Normal_Velocity_Reference_Value= 1.0  , 
   Temperature_Reference_Value= 293.0 ,   
   Density_Reference_Value=  1.2,
   Define_Velocity_profile= 0 ,
   End_of_Data_Block= .true. /

==== Example 2 ====

__**Not for the release SUNFLUIDH_EDU**__

<WRAP info> 
   * The flow is homogeneous (no multi-species gas)
   * The temperature and the density are constant.
   * The normal velocity component is time-dependent :
     * The function is sinusoidal. The mean value of the time function is given by "Normal_Velocity_Reference_Value".
     * the frequency is 10 Hz
     * The magnitude is 40% of the mean inlet velocity
</WRAP>

   &Inlet_Boundary_Conditions
   Type_of_BC= "INLET", Direction_Normal_Plan= 1 ,
   Plan_Location_Coordinate= 0.0   ,
   Start_Coordinate_of_First_Span = 0.0, End_Coordinate_of_First_Span = 0.5,
   Start_Coordinate_of_Second_Span= 0.0  , End_Coordinate_of_Second_Span= 0.0 ,
   Flow_Direction= 1 ,
   Normal_Velocity_Reference_Value= 1.0  , 
   Temperature_Reference_Value= 293.0 ,   
   Density_Reference_Value=  1.2,
   Define_Velocity_profile= 0 ,
   Time_Fct_Name= "Sinus" , Time_Fct_Threshold= 0.0 , 
   Time_Fct_Time_Scale= 0.1 , Time_Fct_Magnitude= 0.4 ,
   End_of_Data_Block= .true. /

===== Outflow data =====

==== Example 1 ====
<WRAP info> 
   * The outflow is based on the mass flowrate conservation.
   * The normal pressure gradient is zero (Neumann boundary condition).
</WRAP>
   
 &Outlet_Boundary_Conditions
   Type_of_BC= "OUTLET", Direction_Normal_Plan= 1 ,
   Plan_Location_Coordinate= 1.5   ,
   Start_Coordinate_of_First_Span = 0.5    , End_Coordinate_of_First_Span = 1.0 ,
   Start_Coordinate_of_Second_Span= 0.0    , End_Coordinate_of_Second_Span= 0.0 ,
   Flow_Direction= 1 ,
   End_of_Data_Block= .true. /
   
==== Example 2 ====

__** Not for the release SUNFLUIDH_EDU**__   

<WRAP info> 
   * The outflow is based on pressure conditions.
   * The (dynamic) pressure value is given by "Pressure_Reference_Value". It is imposed out of the domain and located at a distance "Length_Scale" from the outflow plan (Robin condition).
   * Keep in mind that the pressure is here related to the dynamics, not to the thermodynamics of the flow. It is therefore defined from a reference value which can be null.
</WRAP>
   
 &Outlet_Boundary_Conditions
   Type_of_BC= "FREEBC", Direction_Normal_Plan= 1 ,
   Plan_Location_Coordinate= 1.5   ,
   Start_Coordinate_of_First_Span = 0.5    , End_Coordinate_of_First_Span = 1.0 ,
   Start_Coordinate_of_Second_Span= 0.0    , End_Coordinate_of_Second_Span= 0.0 ,
   Flow_Direction= 1 ,
   Pressure_Reference_Value       = 0.0    , Length_Scale= 0.2 ,
   End_of_Data_Block= .true. /
   
[[sunfluidh:inlet_boundary_conditions_setup_namelist|Click here for the previous page on the inlet boundary conditions]] \\
[[sunfluidh:outlet_boundary_conditions_setup_namelist|Click here for the previous page on the outlet boundary conditions]]