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Can openfoam solve problems in cylindrical and spherical coordinate systems?

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Old   October 26, 2010, 07:58
Default Can openfoam solve problems in cylindrical and spherical coordinate systems?
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George
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Hi,

Can anyone tell me whether the OpenFoam grad, div and Laplacian operators are hardcoded to the Cartesian coordinate system (ie. grad(f)=?[df/dx df/dy df/dz])? Or are these operators flexible enough to also account for cylindrical and sperical coordinate systems?

I am interested in solving an axisymmetric dambreak problem and hence solving the problem within a cylindrical coordinate system would be the most elegant.

Best regards,
George
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Old   October 27, 2010, 02:33
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ata
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Hi George
As I know they are for Cartesian coordinate. But I think you can solve your problem in Cartesian coordinate easily.
Best regards

Ata
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Old   October 27, 2010, 17:11
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What you need to do is create a cylindrical or spherical wedge geometry in 3-D and use wedge boundary conditions.

Enjoy,

Hrv
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Old   October 27, 2010, 17:18
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Thanks. I will simulate a wedge then.

Cheers,
George
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Old   February 3, 2015, 18:17
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hello Dr. Jasak,

For the spherical wedge geometry, it is still with small angle (< 5 degree)? I am not sure what kind of spherical wedge geometry should be generated if I would like to solve the spherical geometry problems. Thank you so much.

OFFO

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Originally Posted by hjasak View Post
What you need to do is create a cylindrical or spherical wedge geometry in 3-D and use wedge boundary conditions.

Enjoy,

Hrv
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Old   February 5, 2015, 10:48
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Dear openfoam....,

You should draw a slice of your geometry like the figures inside the attached website.

http://www.google.de/imgres?imgurl=h...ed=0CDkQ9QEwBA

I hope I understand your question exactly.
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Old   February 5, 2015, 11:37
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I got it, thanks!

Quote:
Originally Posted by Dosin View Post
Dear openfoam....,

You should draw a slice of your geometry like the figures inside the attached website.

http://www.google.de/imgres?imgurl=h...ed=0CDkQ9QEwBA

I hope I understand your question exactly.
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