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Boundry conditions for O-grid mesh

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Old   September 16, 2014, 15:22
Default Boundry conditions for O-grid mesh
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saad
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Dear All,

Using pointwise, I have created hyperbolic O-grid topology 2d mesh for airfoil, now for boundry condition, what I am doing, is to split the outer circle into two semi curves (for velocity inlet and pressure outlet)

Is this right approach?? or there is other way around? kindly help
my solver is ansys fluent

Thanks
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Old   September 17, 2014, 09:57
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Chris Sideroff
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That depends on the type of gas model you are using. If you are assuming a compressible flow (ideal gas), Fluent has a characteristic boundary condition call "farfield" where you set the freestream conditions. This boundary condition type would allow you to use the whole circle.

However, this boundary condition can not be used for incompressible flow (constant density). Therefore, the approach you are using would be appropriate.
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Old   December 30, 2018, 17:13
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Bidesh Sengupta
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Hi!
What shall be BC in case of openfoam?
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Old   January 3, 2019, 12:16
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Travis Carrigan
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Quote:
Originally Posted by BSengupta View Post
Hi!
What shall be BC in case of openfoam?
There's a "freestream" and "freestreamPressure" type you can use with OpenFOAM. You'll just need to specify a "freestreamValue" and you're good to go.
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Old   January 4, 2019, 03:00
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Bidesh Sengupta
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Thank you very much. It was successful.
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Old   February 9, 2020, 01:37
Default O grid mesh boundary condition in ansys fluent solver
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Jay
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I used farfield as velocity inlet, airfoil as wall.. which boundary condition I give for sides?...This was the problem that I faced in ansys fluent solver.. can anyone help me?
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Old   February 9, 2020, 01:39
Default O grid mesh boundary condition in ansys fluent solver
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I used farfield as velocity inlet, airfoil as wall for o grid mesh.. which boundary condition I give for sides?...This was the problem that I faced in ansys fluent solver.. can anyone help me?.. in ansys fluent I got big confusion what I give for sides?
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Old   February 22, 2020, 01:12
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hi!
what shall be BC incase of ansys fluent
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