Différences

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

--- sunfluidh:fluid_properties_namelist [2016/12/01 10:03] – yann
+++ sunfluidh:fluid_properties_namelist [2021/04/15 18:26] (Version actuelle) – yann
@@ Ligne 18: / Ligne 18: @@
                     Heat_Capacity_Ratio         = 1.4  ,
                    Reference_Dynamic_Viscosity  = 1.84D-05 ,
-                   Reference_Dynamic_Viscosity  = 1.84D-05 ,
+                   Reference_Dynamic_Viscosity_2= 1.84D-05 ,
-                   Prandtl                      = 0.71 ,
-                   Reference_Temperature        = 293.0    ,
                    Reference_Density            = 1.2058789 ,
                    Reference_Density_2          = 0.4 ,
+                   Surface_Tension_Coefficient  = 0.0 ,
+                   Prandtl                      = 0.71 ,
+                   Reference_Temperature        = 293.0    ,
                    Molecular_Mass               = 2.9D-02            ,
                    Thermal_Expansion_Coefficient= 0.0
@@ Ligne 30: / Ligne 31: @@
                    Multi_Species_Mixture_Law_for_Thermal_Conductivity_Enabled= .false. ,
                    Multi_Species_Mixture_Law_for_Mass_Diffusion_Enabled      = .false.  ,
-                   Soret_Effect_Enabled                                      = .false. /
+                   Soret_Effect_Enabled                                      = .false. ,
+                   Axisymmetric_Case_3D_Enabled                              = .false. /
 <note important>
-   * The values of physical quantities can be used to either initialize a field or like a reference value to calculate another physical quantities or both. For instance :
+The reference values of physical quantities are used in different ways :
-     * for incompressible flows with heat transfer, the "Reference_Temperature" is used to define the reference temperature implied in the buoyancy force (see the namelist [[sunfluidh:gravity_namelist| "Gravity"]]. \\ If the fluid is a gas, the "Reference_Temperature" is used by the code to calculate the thermal expansion coefficient implied in the buoyancy force (for that, the user must set Thermal_Expansion_Coefficient to zero).
+     * For incompressible flows with heat transfer, the "Reference_Temperature" is used to define the reference temperature implied in the buoyancy force (see the namelist [[sunfluidh:gravity_namelist| "Gravity"]].
-   * [[ Fluid_Properties_Examples | Find here some examples]]
+     * If the incompressible fluid is a gas, the "Reference_Temperature" can be also used by the code in order to calculate automatically the thermal expansion coefficient (**for that, the user must set the variable "Thermal_Expansion_Coefficient" to zero**).
+     * For incompressible two-phase flows, the "Reference_Density" and the "Reference_Density_2" are used in order to initialize the density field. This field must be explicitly defined by an user's function in the module "module_user_define_init_fields.f90". The dynamic viscosity field is automatically initialized from the data "Reference_Density" and "Reference_Density_2".
+     * For low Mach number flows, the reference pressure value is calculated from the "Reference_Density", the "Reference_Temperature" and the "Molecular_Mass" by using the equation of state of perfect gas. \\ This pressure, that is uniform over the domain, is thus used for initializing the density field, knowing the temperature field (defined with the namelist [[sunfluidh:temperature_initialization_namelist|"Temperature_Initialization"]]) and the species mass fraction fields (defined with the namelist [[sunfluidh:species_initialization_namelist|"Species_Initialization"]]) in the particular case of multi-species flows.
+     * For low Mach number flows or incompressible two-phase flows, the "Reference_Density" is also implied in the gravity/buoyancy force (see the namelist [[sunfluidh:gravity_namelist| "Gravity"]].
+     * The "Reference_Dynamic_Viscosity" must be in accordance with the "Reference_Temperature" when the viscosity depends on the temperature (Sutherland's law).
+[[ Fluid_Properties_Examples | Find here some examples]]
 </note>
@@ Ligne 50: / Ligne 59: @@
 ==== Incomp_MultiFluids  ====
    * type : Boolean value (__** Not for the release SUNFLUIDH_EDU**__ )
-    * true : incompressible two-phase flow (only whether Variable_Density=true).
+    * true : incompressible two-fluid flow (only whether Variable_Density=true).
     * false : single phase flow
    * Default value = .false.
@@ Ligne 56: / Ligne 65: @@
    * type = Boolean value
     * true : mass conservation
-    * false : flow at constant pressure
+    * false : mass variation possible
    * Default value = .true.
+==== Constant_Pressure_Flow ====
+   * type = Boolean value
+   * true : Thermodynamical pressure is imposed and constant
+   * Default value = .false.
+==== Variable_Fluid_Volume ====
+   * type = Boolean value
+    * true : The volume of fluid can vary in time
+   * Default value = .false.
 ==== MultiSpecies_Flow ====
    * type = boolean value
@@ Ligne 78: / Ligne 95: @@
 ==== Reference_Density_2 ====
    * type = real value (__** Not for the release SUNFLUIDH_EDU**__ )
-   * reference value of the 2nd fluid density for incompressible two-phase flows (used with Incomp_MultiFluids= .true.)
+   * reference value of the 2nd fluid density for incompressible two-fluid flows (used with Incomp_MultiFluids= .true.)
    * Default value= 1.0
 ==== Reference_Dynamic_Viscosity ====
@@ Ligne 86: / Ligne 103: @@
 ==== Reference_Dynamic_Viscosity_2 ====
    * type = real value (__** Not for the release SUNFLUIDH_EDU**__ )
-   * Reference value for the 2nd dynamic viscosity of incompressible two-phase flows (used with Incomp_MultiFluids= .true.)
+   * Reference value for the 2nd dynamic viscosity of incompressible two-fluid flows (used with Incomp_MultiFluids= .true.)
    * Default value= 1.84D-05
-==== Interface_Thickness_Scale ====
+====Surface_Tension_Coefficient ====
    * type = real value   (__** Not for the release SUNFLUIDH_EDU**__ )
-   * Half-thickness of the interface (used with Incomp_MultiFluids= .true.). \\ If Interface_Thickness_Scale= 0.0, the interface thickness is automatically estimated.
+   * Surface tension coefficient for the simulation of two-fluid flows with capillary effects (used with Incomp_MultiFluids= .true.). \\
-   * Default value = 0.01
+   * Default value = 0.0
 ==== Prandtl ====
    * type = real value
@@ Ligne 134: / Ligne 152: @@
 ==== Axisymmetric_Case_3D_Enabled ====
    * type : boolean value
-   * true : the third velocity component is taken in to account for a 2D axisymmetric problem
+   * true : the third velocity component is taken in to account for a 2D axisymmetric problem (You must set [[sunfluidh:domain_features_namelist?s[]=geometric|Geometric_Layout]] = 2)
    * false:  the third velocity component is not taken in to account for a 2D axisymmetric problem
    * Default value = .false.