[Lukeyfish]

Hey,

So I trying to learn ANSYS for my school's FSAE team; However, I am having two large problems while trying to simulate 2D flow over an aerofoil that is close to the ground for ground effect.

First, Whenever I attempt to run an animation of any sort (I have been trying time-step) it simply does not animate it. For example, it just plays an animation with 2 frames. One with no data, and one with all the data. Whenever I actually ran my calculations, I set "time step size" to 0.01, "number of Time Steps" to 150, and "Max iterations/ Time Step" to 20. We've been trying to figure it out for some time now and have had no luck.

Second, on every aerofoil I have run a simulation on it always gives me this strange almost vortex like pattern on the low pressure side of the aerofoil. Almost like balls of low pressure near the back. It shows strange flow separation patterns yet we are simulation the aerofoil at its optimum angle of attack for best cl/cd. I am not sure what mistakes we are making because this has been happening on every aerofoil we have simulated.

Thank you so much for any help.

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