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==============================================================
*Code_Saturne* howto: **run a coupling study**
==============================================================
----------------
Introduction
----------------
This tutorial provides a course for a coupling study with *Code_Saturne* and *SYRTHES*.
Run a coupling study from *SALOME_CFD* in graphical mode is not available yet.
----------------
Open SALOME
----------------
We consider that we use SALOME_CFD to compute a coupling study. Then, to
open a salome shell the command is ``~/salome/appli_x_y_z/salome shell``.
Now, we are in a salome environment, but in a shell. You can, for example, run
commands like ``code_saturne -h`` for general options or
``code_saturne info -g user`` for the *Code_Saturne* user's guide.
-------------------------------------
Create study
-------------------------------------
To create a study:
- go to the main directory for the study. For example, **my_cfd_study** whith the command: ``cd my_cfd_study``.
- create the study: ``code_sturne create --study=my_study --case=saturne_case --syrthes=syrthes``.
Now, in the directory **my_cfd_study**, a directory **my_study** has been created, with five subdirectories
and two files:
====================== =========================================================
Directory / file Content
====================== =========================================================
MESH directory for mesh files
POST directory for optional post processing scripts
RESU_COUPLING directory for study results
saturne_case directory for *Code_Saturne* case (DATA, SRC)
syrthes directory for *SYRTHES*
coupling_parameters.py file for coupling parameters (number of processors, ...)
runcase executable script
====================== =========================================================
-------------------------------------
Define calculation
-------------------------------------
Use the function **exit** with the command ``exit`` in the salome shell to log out.
Now, we can launch salome in GUI mode, with the command: ``~/salome/appli_x_y_z/salome``.
We are in salome environment and we can:
- create CAD and meshes,
- define CFD calculation parameters,
- define SYRTHES calculation parameters.
-------------------------------------
Run computation
-------------------------------------
When calculation parameters are defined, close the salome GUI and launch the **salome shell** again.
Then, go to the directory **my_study** and edit **coupling_parameters.py** file.
Finally, to launch the computation just run the **runcase** file with the command ``./runcase``.
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