Différences

Ci-dessous, les différences entre deux révisions de la page.

--- sunfluidh:inlet_outlet_boundary_conditions_examples [2016/11/28 17:03] – [Inlet Namelist] yann
+++ sunfluidh:inlet_outlet_boundary_conditions_examples [2018/12/15 14:56] (Version actuelle) – [Example of inflow/outflow boundary conditions] yann
@@ Ligne 1: / Ligne 1: @@
 ===== 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.
+   * 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.
+   * 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)
@@ Ligne 58: / Ligne 60: @@
    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]]