Différences

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

--- sunfluidh:meshgen_doc [2017/12/02 16:42] – yann
+++ sunfluidh:meshgen_doc [2017/12/02 17:16] – yann
@@ Ligne 69: / Ligne 69: @@
 In the data file, each block of data is attributed to a direction (I,J or K).\\
 Each direction can be split in several parts (segments) on which a specific distribution law is applied in order to place the discrete nodes.\\
-Each distribution law is associated to a function defined by a namelist. The available functions are :
+Each distribution law is defined by means of namelists that are described at the end of this page. The available functions are :
    * Regular function (Function_name= REGULAR_MESH)
    * Hyperbolic tangent function "one side" (Function_Name= TANH_ONE_SIDE_MESH)
@@ Ligne 84: / Ligne 84: @@
    * Reverse_Ordering : Reverse the ordering of the distribution if set to .true.
    * End_of_Block_Data : logical set to .true. to declare the end of a data structure (by default it set to .false. by the program)
+__A complete template is provided below.__
 <note important>
-For each direction, the block of data must start with the namelist &METRIC_UNIT         Type_of_Metric= 0 / \\
+For each direction, the block of data must start with the namelist \\ &METRIC_UNIT         Type_of_Metric= 0 / \\
    * Type_of_Metric= 0 specifies a usual metric
    * Type_of_Metric= 1 specifies an angular metric. The unit is the degree.
-The block of data must be closed with the special namelist &MESH_FUNCTION_DATA End_of_Data_Block = .true./
+The block of data must be closed with the special namelist \\ &MESH_FUNCTION_DATA End_of_Data_Block = .true./
 </note>
-A template  each function is given here
+==== Templates for each function ====
+<file template>
+&METRIC_UNIT Type_of_Metric= 0 /         ---> Used to define the metric unit
+&MESH_FUNCTION_DATA  Function_Name="GAUSS_LOBATTO"     Number_of_Cells= 30   Length= 1.0                                                    Reverse_Ordering= .false. /
+&MESH_FUNCTION_DATA  Function_Name="TANH_ONE_SIDE"     Number_of_Cells= 40   Length= 1.0  Left_Cell_Size= 1.0d-03                           Reverse_Ordering= .false. /
+&MESH_FUNCTION_DATA  Function_Name="GEOMETRIC_SERIE_1" Number_of_Cells= 60   Length= 1.0  Left_Cell_Size= 1.0d-02  Cell_Ratio= 1.05d-00     Reverse_Ordering= .false. /
+&MESH_FUNCTION_DATA  Function_Name="REGULAR"           Number_of_Cells= 100  Length= 1.0                                                    Reverse_Ordering= .false. /
+&MESH_FUNCTION_DATA  Function_Name="TANH_TWO_SIDES"    Number_of_Cells= 100  Length= 1.0  Left_Cell_Size= 1.0d-02  Right_Cell_Size= 1.0d-02 Reverse_Ordering= .false. /
+&MESH_FUNCTION_DATA  Function_Name="GEOMETRIC_SERIE_2" Number_of_Cells= 50   Length= 1.0  Left_Cell_Size= 1.0d-02  Right_Cell_Size= 5.0d-02 Reverse_Ordering= .false. /
+&MESH_FUNCTION_DATA  Function_Name="TANH_ONE_SIDE"     Number_of_Cells= 100  Length= 1.0  Left_Cell_Size= 1.0d-03                           Reverse_Ordering= .false. /
+&MESH_FUNCTION_DATA  End_of_Data_Block= .true.        /
+</file>
+==== Generate the grid with Meshgen ====
+After setting the data set in the file "data_meshgen.dat", run the command "meshgen.x".
+Few questions are asked :
+   * Choice of CFD code : OLORIN or SUNFLUIDH (1) CHORUS (2) ---> tape the correct option
+   * MPI domain decomposition (1) or not (0) ---> tape the correct option
+For the case of MPI domain decomposition, further information is required to perform the appropriate domain decomposition
+   * number of domain decomposition per direction
+     *  In I-direction
+     *  In J-direction
+     *  In K-direction
+The grid data are recorded in the appropriate files that depend on the code previously selected:
+    * For Chorus : maille_yyyyy.dat : data are recorded in binary format. "yyyyy" is the number of the associated subdomain.
+    * For sunfluidh : maillx_yyyyy.dat, maillx_yyyyy.dat and maillz_yyyyy.dat (one file per direction): data are recorded in ASCII format and ordered in two colums, the first one is the cell-index, the second one is the coordinate of the upper face of the cell.