[sheth]

Hi,

I am trying to model flapping motion of airfoil. My questions are

1. After some iterations there is negative volume error being generated so what should I do to avoid that.

2. Is my meshing scheme suitable for capturing flow perfectly (Image attached).

3. How do I mesh so that when flapping occurs in solver there is no negative element. Or any remedies for such problems.

4. I tried the remesh option available in cfx solver, but it rotational displacement about centroid or any other point is neglected in remeshing. See image [its from cfx manual], so any solutions?

Any help will be appreciated.

Thanks for time.