code_saturne User's Forum

Hello, Yes, you can select the frequency of the output in the writer tab on "Output Control". With respect to the energy balance you can define internal surfaces and integrate the variables or quantities, but also you can do during the post processing (this is what I did) in paravis/paravi...

Hello, In the practical user's guide of CS ( http://code-saturne.org/cms/documentation ) you can get a description of the different values of IDTVAR IDTVAR = -1: steady algorithm IDTVAR = 0: constant time step IDTVAR = 1: time step constant in space but variable in time IDTVAR = 2: variable time ste...

Hello, Regarding your question about steady algorithm you can check the BPG (Best Practice Guidelines) http://code-saturne.org/cms/sites/default/files/file_attach/BPG/BPG-4-Numerical-Parameters.pdf where some guidelines about the use and requirements of the different schemes. In order to check if th...

Hello Salim,

You are welcome. I'm glad you were able to run your simulation.

Regards

Luciano

Hello, The results that you mention are obtained with CS (outlet temp=25°C)?. Also you can do an energy balance doing E=C_p Q_m \bar{\Delta T} in order to compute the total heat transfer. Please post the listing file (May be you need to add an extension to the file (e.g. dat, txt)). Regards, Luciano

Hello Salim, The error that you get it is because you created a mesh which is build from 2 independent domains (Mesh_1 and Mesh_2), wherewith you get a duplicated face at the union and you will get two surface meshes. To ensure the continuity of the fluid domain you have two options, one is merge th...

Hello, Did you solve your problem? The convergence in the listing looks good and the change in the mass flow rate may be it is because the fluid changes its density in the case that you has set a velocity inlet or volumetric inlet. Which is the reasonable solution that are you expecting? Could you g...

Hello Amir,

You are welcome. I'm glad you were able to solve your problem.

Regards

Luciano

Hello, I found the same error message in these following post, I do not know if the information that is there it is useful.. http://www.na-mic.org/Bug/view.php?id=3461 https://groups.google.com/forum/#!topic/eventandtaskmanager/L636sUwZudY https://github.com/aroberge/easygui_qt/issues/3 http://forum...

Hello, Generally the mass flow rate is computed as \dot{m}=\rho \cdot \vec{V} \cdot \vec{n} \cdot A . In the documentation is mention that the surface vector of the faces are oriented outwards. Also, I think that a simple example like a fluid flow in a tube with an inlet and outlet can answer this q...