Différences

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

--- sunfluidh:sunfluidh_output [2020/09/18 15:07] – [Type of files] witko
+++ sunfluidh:sunfluidh_output [2022/01/10 10:09] – yann
@@ Ligne 24: / Ligne 24: @@
      * N is the physical quantity related to the time series recorded in the file. N= u,v,w,t,p,r for the three velocity components, the temperature, the pressure or the density, respectively.
 <note info>
-These files are written in ASCII format and data are ordered in colums.
+   * These files are written in ASCII format and data are ordered in columns.
-The first column is the time and the others are the time series of a specific quantity. Other columns are linked with probe locations.
+   * The first column is the time and the others are the time series of the physical quantity specified in the file name. Other columns are linked with probe locations.
+   * The velocity components are interpolated at the center of cells.
 </note>
 The data setting is defined in the file "input3d.dat" by means of the namelists:
@@ Ligne 39: / Ligne 40: @@
      * "xxxxxxx" is the file number (the rank) used for the time classification in regard to the recording rate.
 <note info>
-These files are written in binary format.\\
+   * These files are written in binary format.\\
-Each recorded field includes the ghost-cells surrounding the computational domain (or subdomains for MPI computing).
+   * Each recorded field includes the ghost-cells surrounding the computational domain (or subdomains for MPI computing).\\
+   * Each file contains a cell-centered coordinate set \\
+   * The velocity components are located at the center of the __cell-faces__ (the location used during the computation, see [[sunfluidh:sunfluidh_tools|"Overview of key points for using Sunfluidh"]]). \\
 </note>
 The data setting is performed in the file "input3d.dat" with the namelists :
@@ Ligne 64: / Ligne 67: @@
 <note info>
-When the variable "Slice_Gathering_Enabled= .true." in the namelist [[Field_Recording_Setup_Namelist_Setup|Field_Recording_Setup]], every "slice" data split over several MPI subdomains are gathered and recorded in the same file named "slice_Id_Dir_xxxxxxx.d"("yyyyy" is not considered).\\
+   * When the variable "Slice_Gathering_Enabled= .true." in the namelist [[Field_Recording_Setup_Namelist_Setup|Field_Recording_Setup]], every "slice" data split over several MPI subdomains are gathered and recorded in the same file named "slice_Id_Dir_xxxxxxx.d"("yyyyy" is not considered).
+   * Each file contains a cell-centered coordinate set. \\
+   * The velocity components are interpolated at the center of cells. Their position is directly given by the cell-centered coordinate set.
 </note>
@@ Ligne 74: / Ligne 79: @@
      * "xxxxxxx" is the file number (the rank) used for the time classification in regard to the recording rate.
 <note info>
-These files are written in binary format.\\
+   * These files are written in binary format.
+   * Each file contains a cell-centered coordinate set.
+   * The velocity components are interpolated at the center of cells. Their position is directly given by the cell-centered coordinate set.
 </note>
 The data setting is performed in the file "input3d.dat" with the namelists :
@@ Ligne 89: / Ligne 96: @@
      * "xxxxxxx" is the file number used for the time classification.
 <note info>
-These files are written in binary format (double precision for the real values).
+   * These files are written in binary format (double precision for the real values).
-Each recorded field includes the ghost-cells surrounding the computational domain (or subdomains for MPI computing).
+   * Each recorded field includes the ghost-cells surrounding the computational domain (or subdomains for MPI computing).
+   * Each file contains a cell-centered coordinate set.
+   * The velocity components are interpolated at the center of cells. Their position is directly given by the cell-centered coordinate set.
 </note>
 <note important> The term "statistics" generally means the computation of time averages :$$ \overline{f(x_i,x_j,x_k,z)}= \frac{1}{T}\sum_{n=1}^{n=N_t} f(x_i,x_j,x_k,t_n) \Delta t$$
@@ Ligne 103: / Ligne 112: @@
 ==== Backup files ====
 ----
-Three types of files exits :
+Three types of files exists for data used for a restart procedure :
      * The file "save_var_yyyyy_n.d" : This file contains some variables describing the state of the simulation at the backup time.
      * The file "save_fld_yyyyy_n.d" : This file contains all backup fields that are mandatory in order to perform a resuming of the simulation.
@@ Ligne 119: / Ligne 128: @@
      * For the species mass fractions (only for multi-species flows) **[[ Species_Initialization_Namelist | Species_Initialization ]] **
      * For incompressible and immiscible bi-fluid flows : **[[ Two_fluids_Initialization_Namelist | Two_Fluids_Initialization ]]**
+It also exists two kinds of files for the backup of statistical quantities :
+     * The files "save_stat_yyyyy_n.d" : They contain all backup fields that are mandatory in order to perform a resuming of the statistical quantities computation.
+     * The files "save_tpst_yyyyy_n.d" : They contain some variables describing the state of the statistical computation at the backup time.
 ----