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by julieng
Tue Apr 23, 2019 12:40 pm
Forum: CfdOF / CFD
Topic: cfMesh install problem
Replies: 23
Views: 1471

Re: cfMesh install problem

Thank you,

I download FreeCAD v0.18 now it works

Best regards
by julieng
Tue Apr 23, 2019 11:24 am
Forum: CfdOF / CFD
Topic: cfMesh install problem
Replies: 23
Views: 1471

Re: cfMesh install problem

Hello, I try to install cfd-of on the computer at work but I think that I have some firewall limitations. Bluecfd core is well installed but cfMesh isn't I have the message: Downloading cfMesh, please wait... Error downloading cfMesh: addinfourl instance has no attribute '__exit__' Download unsucces...
by julieng
Sun Jan 20, 2019 11:27 pm
Forum: CfdOF / CFD
Topic: problem 3D case with narrow outlets
Replies: 2
Views: 223

Re: problem 3D case with narrow outlets

Thank you thschrader, I reduce to 10 the write interval and I see curves and everything works. The case converges with error <0.0001 after 750 iterations so why 100 is too high? I was obliged to stop the computation even if error was lower than 0.0001. In stationary cases only the number of iteratio...
by julieng
Sat Jan 19, 2019 9:30 am
Forum: CfdOF / CFD
Topic: problem 3D case with narrow outlets
Replies: 2
Views: 223

problem 3D case with narrow outlets

Hello, I want to calculate the pressure drop of a duct with narrow outlets (duct diameter 220 mm, inlet velocity 13 m/s, air at 100°C). I use stationnary calculation with incompressible kw SST model. I have import the step file of the geometry in freeCAD. When I mesh the geometry with cfMesh I canno...
by julieng
Mon Jan 14, 2019 3:08 pm
Forum: CfdOF / CFD
Topic: Transient or steady state CFD problem
Replies: 22
Views: 1248

Re: Transient or steady state CFD problem

Hello, Maybe the Reynolds number is too small and the case needs a Stoke traitment. In comsol it is advised for Re<1. I ask you in the same topic if it is possible to plot forces acting on the cylinder over time directly in paraview. Or maybe it is possible to add in the case some post processing co...
by julieng
Tue Jan 01, 2019 8:18 pm
Forum: CfdOF / CFD
Topic: Transient or steady state CFD problem
Replies: 22
Views: 1248

Re: Transient or steady state CFD problem

Hello

Can you have a look on the model please (the model is attached in a previous named flow pass a cylinder Re 05). The model cannot be more simple but I have always a very high value of the error for pressure even for very low inlet velocity.

Best regards

Happy new year
by julieng
Fri Dec 28, 2018 3:41 pm
Forum: CfdOF / CFD
Topic: Transient or steady state CFD problem
Replies: 22
Views: 1248

Re: Transient or steady state CFD problem

Hello, the residual error doesn t decrease during a transient simulation

Best regards
by julieng
Tue Dec 25, 2018 3:57 pm
Forum: CfdOF / CFD
Topic: preprocessing and mesh for openfoam
Replies: 4
Views: 299

Re: preprocessing and mesh for openfoam

Hello,

I want to use some other solvers of openfoam for example for the heat transfer. cfdOF maybe can help me to preprocess cases (geometry and mesh)

In any case, Salome do the job

Best regards
by julieng
Sun Dec 23, 2018 11:00 pm
Forum: CfdOF / CFD
Topic: preprocessing and mesh for openfoam
Replies: 4
Views: 299

preprocessing and mesh for openfoam

Hello, Is there a simple solution to preprocess cases for Openfoam (mesh with Freecad and patches inlet outlet walls)? I watched some tutorial of Salome allowing to do this but not really with FreeCAD. I try to preprocess a case with cfdOF and use the polyMesh folder created in Openfoam but it seems...
by julieng
Sun Dec 23, 2018 5:10 pm
Forum: CfdOF / CFD
Topic: Transient or steady state CFD problem
Replies: 22
Views: 1248

Re: Transient or steady state CFD problem

Ok. My question was to know if the residual error for the pressure was ok because during all the transient simulation p always larger than 0.1

Best regards

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