[leech10]

Hi

I am brand new to CFD, a bit familiar with the inventor. I need to do lift simulation. I was checking several tutorials and I found also this: http://forums.autodesk.com/t5/Autodesk-Simulation-CFD/NACA-AEROFOIL-2415-lift-coefficient-calculatio...

I see that for airfoil simulation 2D option is suggested. I dont get one thing, maybe stupid question. There is stated that 2D simulation uses 1 unit depth. So does this treat wing as one meter span( if metric units are chosen), and lift is calculated for 1 meter wingspan? Am I correct or maybe I dont understand this?
Is there a possibility to simulate lift of the delta wing or trapezoid swept wing by using 2D or only classic straight wings can be simulated in 2D and rest in 3D.
Is there a possibility to simulate lift of the rotating cylinder( magnus effect)?

Regards

[marktm250xc]

Your assumption is correct. Lift and drag forces would be for the unit depth; multiply by the true length of object to get total forces.

Of course 2D will not account for any end effects. 2D is great for a quick first pass on a mesh-intensive application such as this. However, it has it limitations when the geometry is really 3D and not just a 2D extrusion. A NACA airfoil in 2D is a great learning example. Then do the same in 3D to get a feel for overall mesh requirements and run times.

You can apply a rotational BC to the spinning surface to simulate that effect.

[leech10]

Hi

Thank you very much. I will try with 2D first as I have 4 digit NACA and rotating cylinder to calculate.

Regards
Piotr

[Ehtesham]

I am also trying to simulate the lift, but this isnt giving me correct results