Différences

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

--- sunfluidh:sunfluidh_tutorials [2017/09/29 16:56] – yann
+++ sunfluidh:sunfluidh_tutorials [2020/01/30 11:31] (Version actuelle) – [Data setup] yann
@@ Ligne 18: / Ligne 18: @@
 The computation is on a 2D heated back-facing step flow. The temperature of the bottom and top walls is imposed to $T_c$ and the temperature of the step walls is $T_h$. The inflow is fixed with an uniform velocity profile $U_b$ at temperature $Tc$. We consider an incompressible flow under the Boussinesq hypothesis : the physical properties are constant and the thermal buoyancy effect is modelised by the Boussinesq hypothesis :
 $F_b= -\rho_0.\beta.g_0.(T - T_0)$ (see the page [[ Gravity_Namelist | Gravity ]] for more details).
-We suppose the fluid as a perfect gas. As a consequence, $\beta= \frac{1}{T_0}$
+We suppose the fluid is air that behaves as a perfect gas. As a consequence, $\beta= \frac{1}{T_0}$
 {{ :sunfluidh:heatedbackfacingstepflow.jpg?direct&600 |}}
+__The governing equations for incompressible flows are shown [[sunfluidh:sunfluidh_link_equations_data_set|here]]__.
 ==== Dimensionless data ====
@@ Ligne 65: / Ligne 67: @@
     * [[ tuto1_outputdata |Data set on the output data]]
+<note>
+Boundary conditions can be difficult to understand. Some help can be find through [[ :sunfluidh:Examples_wall_bc | some examples illustrated here]].
+</note>
-==== Output data ====
-Here we show an example of usual data acquisition :
-   * Instantaneous fields
-   * Statistical fields
-   * Time series from probes located at specific positions
-The various parameters related to each type of output data are originally splitted by topic in the appropriate namelist. For a sake of clarity, they are directly regrouped for each type of output data as shown here :
-For instantaneous fields
-   &Field_Recording_Setup         Precision_On_Instantaneous_Fields= 2 /                  !--- option value for writing results in double precision (1 = single precision)
-   &Simulation_Management         Fields_Recording_Rate = 1.0D-00 /                       !--- Recording rate (in time unit)
-   &Instantaneous_Fields_Listing  Name_of_Field = "U" , Recording_Enabled = .true.  /     !--- Recording of the first velocity component enabled
-   &Instantaneous_Fields_Listing  Name_of_Field = "V" , Recording_Enabled = .true.  /     !--- Recording of the second velocity component enabled
-   &Instantaneous_Fields_Listing  Name_of_Field = "W" , Recording_Enabled = .false. /     !--- Recording of the Third velocity component disabled
-   &Instantaneous_Fields_Listing  Name_of_Field = "T" , Recording_Enabled = .true.  /     !--- Recording Temperature enabled
-   &Instantaneous_Fields_Listing  Name_of_Field = "P" , Recording_Enabled = .true.  /     !--- Recording Pressure enabled
-For statistical fields
-   &Simulation_Management Start_Time_For_Statistics= 1.D+2               ,          !--- Start time for computing the statistical fields
-                          Time_Range_Statistic_Calculation = 1.D+00      /          !--- time range over which the statistical field computation is performed.
-                                                                                          When it has been covered, the results are recorded and a new statistical computation starts again
-   &Field_Recording_Setup      Precision_On_Statistical_Fields= 2 ,                 !--- option value for writing results in double precision (1 = single precision)
-                               Time_Statistics_Enabled= .true.    ,                 !--- time statistics  are performed (true) - classical statistics (false)
-                               Sample_Rate_For_Statistics= 1      ,                 !--- Sample rate (in time iteration unit)
-                               Statistic_Space_Average_Type= "NO_SPACE_AVERAGE" /   !--- option on spatial averaged fields
-   &Statistical_Fields_Listing  Name_of_Field = "<U>   " , Recording_Enabled = .true.  /   !---- Averaged I-velocity component
-   &Statistical_Fields_Listing  Name_of_Field = "<V>   " , Recording_Enabled = .true.  /   !---- Averaged J-velocity component
-   &Statistical_Fields_Listing  Name_of_Field = "<P>   " , Recording_Enabled = .true.  /   !---- Averaged pressure
-For time-series from probes
-                                                                         U    , V     , W      , T      , P     , RHO
-   &Probe_Quantities_Enabled  Temporal_Series_For_Quantity_Enabled(:)= .true. , .true., .false., .false., .true., .false.    /    !--- Selection of physical quantities
-   &Simulation_Management Probe_Recording_Rate                       = 10                                                     /   !--- Recording rate (in time-iteration unit)
-   &Probe_Location  Xi= 2.0 , Xj= 1.5 , Xk= 0.0 /       !---coordinates of probe 1
-   &Probe_Location  Xi= 3.0 , Xj= 1.0 , Xk= 0.0 /       !---coordinates of probe 2
-<note important>
-Any information about these namelist are available here :
-   * [[Simulation_Management_Setup_Namelist|Simulation_Management]]
-   * [[Field_Recording_Setup_Namelist_Setup|Field_Recording_Setup]]
-   * [[Instantaneous_Fields_Listing_Namelist_Setup|Instantaneous_Fields_Listing]]
-   * [[Statistical_Fields_Listing_Namelist_Setup|Statistical_Fields_Listing]]
-   * [[Probe_Quantities_Enabled_Setup_Namelist|Probe_Quantities_Enabled]]
-   * [[Probe_Location_Setup_Namelist|Probe_Location]]
-</note>