# airfoil grid generation

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 January 16, 2006, 05:09 airfoil grid generation #1 Bounecer Guest   Posts: n/a 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.

 January 16, 2006, 06:15 Re: airfoil grid generation #2 B787 Guest   Posts: n/a 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

 January 16, 2006, 07:46 Re: airfoil grid generation #3 Bounecer Guest   Posts: n/a 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

 February 7, 2006, 00:09 Re: airfoil grid generation #4 santiago suarez Guest   Posts: n/a 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

 February 7, 2006, 00:42 Re: airfoil grid generation #5 Ahmed Guest   Posts: n/a studentfluent.com, click on mesh lib and download all the mesh files you wish for free

 February 7, 2006, 11:27 Re: airfoil grid generation #6 zonexo Guest   Posts: n/a u can try ugrid or shore-cfd. one is o-grid, another is c-grid. google them...

 February 10, 2006, 22:04 Re: airfoil grid generation #7 santiago suarez Guest   Posts: n/a thanks Ahmed, IŽll try. Later I`ll talk about. Bye

 February 10, 2006, 22:05 Re: airfoil grid generation #8 santiago suarez Guest   Posts: n/a thanks zonexo, IŽll try. Later I`ll talk about. Bye

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