sunfluidh:sgs_model_setup_namelist
Différences
Ci-dessous, les différences entre deux révisions de la page.
| Prochaine révision | Révision précédente | ||
| sunfluidh:sgs_model_setup_namelist [2016/11/11 14:03] – créée yann | sunfluidh:sgs_model_setup_namelist [2016/11/28 17:50] (Version actuelle) – yann | ||
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| Ligne 1: | Ligne 1: | ||
| ===== Namelist SGS_Model ===== | ===== Namelist SGS_Model ===== | ||
| + | __** Not for the release SUNFLUIDH_EDU**__ .\\ | ||
| This data setup allows the user to use a LES subgrid model to modelize the subgrid scales effects of turbulence.\\ | This data setup allows the user to use a LES subgrid model to modelize the subgrid scales effects of turbulence.\\ | ||
| The different models are proposed here to take into account the dynamical scales and the thermal scales (when heat transfer is considered). Some LES models results from the research performed at LIMSI. Their use depends on the type of flow considered. | The different models are proposed here to take into account the dynamical scales and the thermal scales (when heat transfer is considered). Some LES models results from the research performed at LIMSI. Their use depends on the type of flow considered. | ||
| + | ----- | ||
| + | ==== Types and definitions of the data setup ==== | ||
| + | ----- | ||
| ==== LES_Enabled ==== | ==== LES_Enabled ==== | ||
| * Type : boolean value | * Type : boolean value | ||
| Ligne 10: | Ligne 12: | ||
| * Type : integer value | * Type : integer value | ||
| * This data allows the user to select the LES model related to the dynamic scales of the flow to define a subgrid viscosity term in the momentum equations. | * This data allows the user to select the LES model related to the dynamic scales of the flow to define a subgrid viscosity term in the momentum equations. | ||
| - | * 0 : Static model of Mansour (version 0 : like Smagorinsky model with the vorticity tensor considered in place of the constraint tensor) | + | * 0 : No kinematic LES model |
| - | * 1 : Static model of Mansour (version 1) | + | * 1 |
| * 2 : Mixed scales model (Mansour + Bardina approach to estimate the subgrid scales) | * 2 : Mixed scales model (Mansour + Bardina approach to estimate the subgrid scales) | ||
| * 11 : Dynamic model based on the Germano procedure applied to the Mansour' | * 11 : Dynamic model based on the Germano procedure applied to the Mansour' | ||
| Ligne 25: | Ligne 27: | ||
| * 11 : Dynamic model based on a Reynolds analogy in order to estimate a local value of the subgrid Prandtl number | * 11 : Dynamic model based on a Reynolds analogy in order to estimate a local value of the subgrid Prandtl number | ||
| * 20 : Dynamic model based on the Germano procedure applied to the static model (2) in order to estimate a local value of the subgrid Prandtl number | * 20 : Dynamic model based on the Germano procedure applied to the static model (2) in order to estimate a local value of the subgrid Prandtl number | ||
| + | |||
| + | ==== Constant_Kinematic_Model ==== | ||
| + | * Type : real value | ||
| + | * This is the reference value of the constant parameter that is used in LES models related to the momentum equations. See the literature in relation with your simulation case in order to define the suitable constant. | ||
| + | ==== Constant_Thermal_Model ==== | ||
| + | * Type : real value | ||
| + | * This is the reference value of the constant parameter that is used in LES models related to the enthalpy equation. See the literature in relation with your simulation case in order to define the suitable constant. | ||
| + | ==== Weight_Of_Grid_Filtering ==== | ||
| + | * Type : real value | ||
| + | * This parameter is associated to the length-scale of the filter chosen in some LES models such as dynamic models or mixed-scales models in order to estimate the subgrid turbulence scales. By considering $\Delta$ as the grid length scale and $\hat{\Delta}$ as the filter length scale, the most classical values of the parameter are : | ||
| + | * Weight_Of_Grid_Filtering= 2.0 : $\hat{\Delta}= \sqrt{6}.\Delta$ | ||
| + | * Weight_Of_Grid_Filtering= 4.0 : $\hat{\Delta}= 2.\Delta$ | ||
| + | * Weight_Of_Grid_Filtering= 6.0 : $\hat{\Delta}= \sqrt{3}.\Delta$ | ||
| + | |||
sunfluidh/sgs_model_setup_namelist.1478869395.txt.gz · Dernière modification : 2016/11/11 14:03 de yann