Hello guys, I am trying to study the flow around NACA0012 airfoil at zero angle of attack. However, when I try to refine the octree parameter around the airfoil and generate the mesh, every single time I get different values for Lift force! Any reasons??

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0 Chuel-Ho.Kim over 3 years ago

NACA0012 has a symmetrical airfoil.

The lift force is zero when the angle of attack is 0 degrees.

Will it be the values(floating) whose lift force cannot be considered zero?

And does that the values(floating) change depending on the octree parameter?

I think it is natural to get different values(floating) for different octree setting.

Anyway, I used scFLOW to get the lift coefficient for NACA0012.

It was a very good result with even a small number of meshes.

Here are the results of the lift coefficient and examples of the octree and prism settings for your reference.

The chord length is 1.0 meter. The mesh is a pseudo-2D with one element in depth.
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0 Chuel-Ho.Kim over 3 years ago

NACA0012 has a symmetrical airfoil.

The lift force is zero when the angle of attack is 0 degrees.

Will it be the values(floating) whose lift force cannot be considered zero?

And does that the values(floating) change depending on the octree parameter?

I think it is natural to get different values(floating) for different octree setting.

Anyway, I used scFLOW to get the lift coefficient for NACA0012.

It was a very good result with even a small number of meshes.

Here are the results of the lift coefficient and examples of the octree and prism settings for your reference.

The chord length is 1.0 meter. The mesh is a pseudo-2D with one element in depth.
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Vote Up 0 Vote Down

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