Search found 245 matches

by Luciano Garelli
Thu Jul 07, 2016 6:58 pm
Forum: code_saturne usage
Topic: Simple flow problem comparison with Comsol
Replies: 11
Views: 2926

Re: Simple flow problem comparison with Comsol

Hello,

I attach a screenshot about where you can set the output frequency.
output.jpg
Regards,

Luciano
by Luciano Garelli
Thu Jul 07, 2016 3:36 pm
Forum: code_saturne usage
Topic: Simple flow problem comparison with Comsol
Replies: 11
Views: 2926

Re: Simple flow problem comparison with Comsol

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...
by Luciano Garelli
Thu Jul 07, 2016 2:46 pm
Forum: code_saturne usage
Topic: Simple flow problem comparison with Comsol
Replies: 11
Views: 2926

Re: Simple flow problem comparison with Comsol

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...
by Luciano Garelli
Wed Jul 06, 2016 6:02 pm
Forum: code_saturne usage
Topic: Simple flow problem comparison with Comsol
Replies: 11
Views: 2926

Re: Simple flow problem comparison with Comsol

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...
by Luciano Garelli
Mon Jul 04, 2016 4:19 pm
Forum: code_saturne usage
Topic: Looking for help running a simulation
Replies: 9
Views: 4904

Re: Looking for help running a simulation

Hello Salim,

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

Regards

Luciano
by Luciano Garelli
Fri Jun 24, 2016 8:02 pm
Forum: code_saturne usage
Topic: Input thermal flux HELP
Replies: 3
Views: 1381

Re: Input thermal flux HELP

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
by Luciano Garelli
Fri Jun 24, 2016 7:42 pm
Forum: code_saturne usage
Topic: Looking for help running a simulation
Replies: 9
Views: 4904

Re: Looking for help running a simulation

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...
by Luciano Garelli
Thu Jun 16, 2016 6:12 pm
Forum: code_saturne usage
Topic: Buoyancy mixing
Replies: 2
Views: 2991

Re: Buoyancy mixing

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...
by Luciano Garelli
Fri Jun 10, 2016 2:35 pm
Forum: code_saturne usage
Topic: Jacobi: error (divergence) solving for Velocity
Replies: 17
Views: 7542

Re: Jacobi: error (divergence) solving for Velocity

Hello Amir,

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

Regards

Luciano
by Luciano Garelli
Fri Jun 10, 2016 2:31 pm
Forum: code_saturne usage
Topic: Expression check failed unexpectedly
Replies: 6
Views: 4259

Re: Expression check failed unexpectedly

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...