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Old   January 16, 2006, 05:09
Default airfoil grid generation
  #1
Bounecer
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Please I'm using structured C-grid generation to simulate numerically flow about NACA airfoil. My code program diverge after it reachs 10**(-4) between two concequative velocity values.

That's some details of my code program: 2D, incomressible, laminar, viscous flow grid dimension:191x145 streching coeffecients: 0.12, 0.12 Re number: 2x10**3 relaxation parameters for all variables: 0.05 finite volumes method with upwind second order scheem SIMPLER Algorithm

Please i'm ready for more details if you would like help me to run my code.
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Old   January 16, 2006, 06:15
Default Re: airfoil grid generation
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B787
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Hi,

Just try running ur code without the airfoil...just a plane flow..theoretically the solution should not change with time. If u still get an error, i think the probability of finding an error due to the grid (like calculation of angles etc) is more. The other thing i suggest is try a simple test case--a flat plate or flow between parallel plates and see wat happens.

regards,

B787
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Old   January 16, 2006, 07:46
Default Re: airfoil grid generation
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Bounecer
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Thanks verry much for y're interest, I'm runing the code for permanent case and zero angle of attack. But i have a difficulties in imposing boundary conditions in numerical domain
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Old   February 7, 2006, 00:09
Default Re: airfoil grid generation
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santiago suarez
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I need only a grid generation soft (free) for simulate a C or O grid about a 2D profile (orthogonal mesh in a computational plane), please if you know some one link send me it.

Thanks

Santiago Argentina
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Old   February 7, 2006, 00:42
Default Re: airfoil grid generation
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Ahmed
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studentfluent.com, click on mesh lib and download all the mesh files you wish for free
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Old   February 7, 2006, 11:27
Default Re: airfoil grid generation
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zonexo
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u can try ugrid or shore-cfd. one is o-grid, another is c-grid. google them...
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Old   February 10, 2006, 22:04
Default Re: airfoil grid generation
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santiago suarez
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thanks Ahmed, IŽll try. Later I`ll talk about.

Bye
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Old   February 10, 2006, 22:05
Default Re: airfoil grid generation
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santiago suarez
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thanks zonexo, IŽll try. Later I`ll talk about.

Bye
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