[A.Wendy]

Hi everybody,

i have two problems. Currently i am working on the simulation of an gyrocopter including autorotation but i got some strange problems:
when I calculate the forces/moments on my profile they are oscillating.

in the link below you find the complete cases for a static rotation and one for the autorotation added. when i run the auto rotation case my forces are increasing extremely and i have no idea why....

i am using pimpleDyMFoam and the GGI of OF 1.6 extend.

maybe some of you have ab idea.

best wishes

andy

static RPM: http://ubuntuone.com/7Eivib5v0AIGBE1pKjxk05
autorotation: http://ubuntuone.com/4Ay27nAKiikV7Uh7Gqem5c

[A.Wendy]

hi everybody,

fault one mistake in my boundaries of the velocity and now it seemst to work better. but somehow i often get a floating point exception. when i write my data in a smaller timestep intervall and restart my computation from the latestTime the analysis is running more or less....

but this is a "dirty way" i think....

[aapinillosr]

Hi Wendy,

Currently I'm starting an investigation about CFD with Autogyros rotors with NACA 8H12 airfoil and I'm starting with OpenFoam too, if you could provide me some advice about that fact, I appreciate. Thank you


Best Regards