sunfluidh:outlet_boundary_conditions_setup_namelist
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Ci-dessous, les différences entre deux révisions de la page.
Les deux révisions précédentesRévision précédenteProchaine révision | Révision précédente | ||
sunfluidh:outlet_boundary_conditions_setup_namelist [2016/11/06 18:36] – yann | sunfluidh:outlet_boundary_conditions_setup_namelist [2016/11/29 15:34] (Version actuelle) – [Pressure_Reference_Value] yann | ||
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===== Outlet_Boundary_Condition ===== | ===== Outlet_Boundary_Condition ===== | ||
- | This data setup are used to define the inflow | + | This data setup are used to define the outflow |
- | Whatever the grid topology, the orientation and the span of the inflow | + | |
- | | + | ===== Full data set of the namelist ===== |
- | | + | |
- | When the normal vector is oriented along the I-direction, | + | & |
- | When the the normal vector is oriented along the J-direction, | + | |
- | When the the normal vector is oriented along the K-direction, | + | |
- | Don't forget to set the boolean data “End_of_Data_Block” at the end of the namelist. A “.true.” value means the end of the data block when several namelists are used to create several outlets. | + | |
+ | | ||
+ | | ||
+ | | ||
+ | | ||
+ | |||
+ | <note important> | ||
+ | | ||
+ | * the normal vector of the outlet plane associated to a specific direction (I,J or K). | ||
+ | * the coordinates associated to the position of the outlet sides along the two perpendicular directions to the normal vector (denoted the first and second span directions). | ||
+ | * When the normal vector is oriented along the I-direction, | ||
+ | * When the the normal vector is oriented along the J-direction, | ||
+ | * When the the normal vector is oriented along the K-direction, | ||
+ | * By default the domain is enclosed. The boundary conditions defined by default at the ends of the domain are walls. When an outlet is placed at the end of the domain, it replaces the wall conditions over the outflow area. | ||
+ | | ||
+ | |||
+ | Find some examples [[Inlet_Outlet_Boundary_Conditions_Examples|here]] about outflow configurations. | ||
+ | </ | ||
+ | ----- | ||
+ | ===== Definition of the data set ===== | ||
----- | ----- | ||
==== Type_of_BC ==== | ==== Type_of_BC ==== | ||
* Type : String of 6 characters | * Type : String of 6 characters | ||
- | * Name to define the outflow boundary conditions type. Only one kind of outlet boundary condition is defined | + | * Name to define the outflow boundary conditions type. Three kind of outlet |
+ | * OUTLET : This boundary condition is based on the mass or volumic flowrate conservation to estimate the normal component distribution of the velocity | ||
+ | * OUT_PF : The pressure is imposed at the outlet and the normal velocity component is estimated from a simplified Navier-Stokes equation | ||
+ | * FREEBC : This boundary condition rely on the same concept as the OUT_PF one but the pressure reference-value | ||
==== Direction_Normal_Plan ===== | ==== Direction_Normal_Plan ===== | ||
* Type : integer value | * Type : integer value | ||
Ligne 31: | Ligne 55: | ||
* This coordinate defines the upper side of the outlet plan span along "the second direction" | * This coordinate defines the upper side of the outlet plan span along "the second direction" | ||
==== Pressure_Reference_Value ==== | ==== Pressure_Reference_Value ==== | ||
+ | * Type : real value | ||
+ | * This is the pressure reference value used when the outlet boundary conditions are the type " | ||
+ | ==== Length_Scale ==== | ||
+ | * Type : real value | ||
+ | * This data is the length scale value used to define the distance between the outlet plan and the point where the pressure reference value is imposed. | ||
+ | ==== Flow_Direction ==== | ||
+ | * Type : integer value | ||
+ | * This value is set to 1 or -1. It indicates the presumed direction of the outflow in accordance to the position of the outlet. If the outflow is oriented along the increasing or decreasing index (for a given direction) the value is set to 1 or -1, respectively. | ||
+ | ==== Pressure_Reference_Value ==== | ||
+ | * Type : Real value (__** Not for the release SUNFLUIDH_EDU**__ ) | ||
+ | * Reference value of the imposed dynamical pressure used when " | ||
==== Length_Scale ==== | ==== Length_Scale ==== | ||
- | ==== | + | * Type : Real value (__** Not for the release SUNFLUIDH_EDU**__ ) |
+ | * Distance between the outlet plane and the position where the pressure reference value is imposed behind the outlet plane when the " | ||
==== End_of_Data_Block ==== | ==== End_of_Data_Block ==== | ||
* Type : boolean value | * Type : boolean value | ||
* Specify the end of the namelist or a group of this type of namelist (if true). | * Specify the end of the namelist or a group of this type of namelist (if true). |
sunfluidh/outlet_boundary_conditions_setup_namelist.1478453764.txt.gz · Dernière modification : 2016/11/06 18:36 de yann