Forum: OpenFOAM Running, Solving & CFD
February 10, 2011, 03:27
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Replies: 85
Views: 21,632
Hi,
well, everything is posted here...
Hi,
well, everything is posted here (http://www.cfd-online.com/Forums/openfoam-solving/57870-wing-aerodynamics-fluent-15-comparison-3.html#post212960). If you want the original files, give me some...
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Forum: OpenFOAM Running, Solving & CFD
December 6, 2010, 03:35
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Replies: 85
Views: 21,632
Well,
I solved the problem posted above, and...
Well,
I solved the problem posted above, and was not (only) a problem of fvSchemes and fvSolution. In any case, the right setup is not unique and must be refined for your case, that is indeed really...
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Forum: OpenFOAM Running, Solving & CFD
December 1, 2010, 08:32
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Replies: 85
Views: 21,632
Hi,
No, Pointwise is not for free. I have...
Hi,
No, Pointwise is not for free. I have chosen it for three main reasons:
1. It is the software I knew better when I started to look for a new mesher;
2. It has a direct Pointwise -> OpenFOAM...
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Forum: OpenFOAM Running, Solving & CFD
December 1, 2010, 03:37
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Replies: 85
Views: 21,632
Hi V,
well, I guess it is a sort of learning...
Hi V,
well, I guess it is a sort of learning how to proper grading cells on basic connectors. As I learnt from Alberto, a good distribution on the 1D and 2D mesh will lead to a nice 3D mesh......
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Forum: OpenFOAM Running, Solving & CFD
April 15, 2009, 05:40
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Replies: 85
Views: 21,632
Conclusion
Hello FOAMers,
in order to obtain better convergence and results closer to Fluent for my external aerodynamic simulation, I changed one more time my fvSchemes, following some suggestions I had from...
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Forum: OpenFOAM Running, Solving & CFD
February 24, 2009, 11:52
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Replies: 85
Views: 21,632
Hi Mathias,
in the last days
Hi Mathias,
in the last days I have been busy with other stuff and I haven't tested anything new. I will try some more settings, included what Maruthamuthu suggested, as soon as I will have some...
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Forum: OpenFOAM Running, Solving & CFD
February 18, 2009, 13:33
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Replies: 85
Views: 21,632
Hi FOAMers,
In order to under
Hi FOAMers,
In order to understand why OF and Fluent converge to such different coefficient values, I analyzed the single forces contribution. Here the results:
<u>Fluent</u>
pressure force:...
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Forum: OpenFOAM Running, Solving & CFD
February 16, 2009, 10:57
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Replies: 85
Views: 21,632
Hi FOAMers!
In order to fin
Hi FOAMers!
In order to find a proper case set up, I am considering a wing with an AoA = 8°, that it is easier to simulate and has not problem with flow detachment. After trying different...
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Forum: OpenFOAM Running, Solving & CFD
February 16, 2009, 04:34
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Replies: 85
Views: 21,632
Hi guys,
I am still doing som
Hi guys,
I am still doing some tests to set everything properly. As soon as I am appy with my case set up, I will post here the comparison results and send it to you.
Bye,
Maddalena.
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Forum: OpenFOAM Running, Solving & CFD
February 12, 2009, 12:32
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Replies: 85
Views: 21,632
Hi guys,
finally I have some
Hi guys,
finally I have some good news from my simulations!
1)Thanks to Rosario's suggestion, I changed my boundary condition for the spherical domain from fixedValue to inletOutlet. In simple...
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Forum: OpenFOAM Running, Solving & CFD
February 12, 2009, 06:04
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Replies: 85
Views: 21,632
Hi Rosario,
I set fixedValue
Hi Rosario,
I set fixedValue both for k and epsilon at the spherical ext patch. Should I have used inletOutlet since the flow "runs" in the two directions?
Regards,
Maddalena
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Forum: OpenFOAM Running, Solving & CFD
February 11, 2009, 13:00
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Replies: 85
Views: 21,632
http://www.cfd-online.com/Ope
http://www.cfd-online.com/OpenFOAM_Discus/icons/mime_pdf.gif velocityField.pdf (http://www.cfd-online.com/OpenFOAM_Discus/messages/1/velocityField-11108.pdf)
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Forum: OpenFOAM Running, Solving & CFD
February 11, 2009, 12:57
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Replies: 85
Views: 21,632
Dear BastiL,
after a succes
Dear BastiL,
after a successfull run with my case, I realized that a spherical domain is not suitable for OF. Why? See this velocity magnitude contour... ...
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Forum: OpenFOAM Running, Solving & CFD
February 11, 2009, 09:04
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Replies: 85
Views: 21,632
I have run some simulations as
I have run some simulations as well. I have focused on gradSchemes, since Gauss linear is stable, but force coefficients are not converging. I added a limiter as suggested by Hrvoje at the beginning...
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Forum: OpenFOAM Running, Solving & CFD
February 10, 2009, 05:12
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Replies: 85
Views: 21,632
Always problems in attaching f
Always problems in attaching files...
http://www.cfd-online.com/OpenFOAM_Discus/icons/mime_pdf.gif residualHistory.pdf...
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Forum: OpenFOAM Running, Solving & CFD
February 10, 2009, 05:07
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Replies: 85
Views: 21,632
Good morning FOAMers!
@ Bas
Good morning FOAMers!
@ BastiL
1) Ok, perfect! In any case... My boundary conditions are:
- patch named ext: v (15, 0, 0), p zeroGradient, k = 0.001, epsilon = 0.000616218, that is the...
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Forum: OpenFOAM Running, Solving & CFD
February 9, 2009, 06:50
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Replies: 85
Views: 21,632
Yes, I modified OF because I'd
Yes, I modified OF because I'd like to be coherent with Fluent settings. In some minutes you'll get the case. Thanks.
Maddalena
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Forum: OpenFOAM Running, Solving & CFD
February 9, 2009, 05:43
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Replies: 85
Views: 21,632
http://www.cfd-online.com/Ope
http://www.cfd-online.com/OpenFOAM_Discus/icons/attachment_icon.gif FluentSettings.rar (http://www.cfd-online.com/OpenFOAM_Discus/messages/1/FluentSettings-11043.unk)
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Forum: OpenFOAM Running, Solving & CFD
February 9, 2009, 05:31
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Replies: 85
Views: 21,632
Mmm.. Sorry...
http://www.c
Mmm.. Sorry...
http://www.cfd-online.com/OpenFOAM_Discus/icons/attachment_icon.gif FluentSettings.jpg.tar.gz (http://www.cfd-online.com/OpenFOAM_Discus/messages/1/FluentSettings_jpg_tar-11041.unk)
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Forum: OpenFOAM Running, Solving & CFD
February 9, 2009, 05:07
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Replies: 85
Views: 21,632
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Forum: OpenFOAM Running, Solving & CFD
February 6, 2009, 13:01
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Replies: 85
Views: 21,632
Dear all,
Some fresh news a
Dear all,
Some fresh news about Fluent-OF comparison in wing aerodynamics...
So far, I have applied realizableKE, kepsilon or Launder Sharma ke turbulence model to simulate flow around a 3D...
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Forum: OpenFOAM Running, Solving & CFD
February 5, 2009, 13:23
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Replies: 85
Views: 21,632
Dear Hrvoje, Dear Maruthamuthu
Dear Hrvoje, Dear Maruthamuthu,
thanks for your advices and suggestions, but unfortunately I haven't succeed in let the simulation converge... Here my today's results:
1)As reported at the...
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Forum: OpenFOAM Running, Solving & CFD
February 5, 2009, 13:14
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Replies: 85
Views: 21,632
Dear Hrvoje, Dear Maruthamuthu
Dear Hrvoje, Dear Maruthamuthu,
thanks for your advices and suggestions, but unfortunately I haven't succeed in let the simulation converge... Here my today's results:
1)As reported at the...
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Forum: OpenFOAM Running, Solving & CFD
February 5, 2009, 04:38
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Replies: 85
Views: 21,632
... about point 3: the simulat
... about point 3: the simulation yith a y+ of about 25 blew in 50 iterations. As usual, epsilon range became way too large and has to be bounded by simpleFoam. This happened although a higher...
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Forum: OpenFOAM Running, Solving & CFD
February 4, 2009, 13:06
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Replies: 85
Views: 21,632
Dear Maruthamuthu, Dear Daniel
Dear Maruthamuthu, Dear Daniel,
thanks for your support and advices. Here there are some answers (and some more questions as well...):
1) I have some problems to apply Fluent boundary...
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