[overture] rigid body motion

From: Junji Huang <jhyt7@xxxxxxx>
To: overture@xxxxxxxxxxxxx
Date: Thu, 13 Aug 2015 11:48:48 -0500

Hi Bill,

I tried to set up a case of rigid body(two savonius blades) motion that is
constrained to rotate about a point being driven by freestream flow, the
commands for moving body is as follows:

specify grids to move
rigid body
density
1.
moments of inertia
0.1
initial centre of mass
0. 0.
initial angular velocity
0.
position is constrained to a line
0 0 1
done
bottom-savonius
top-savonius
done

For these settings, I want the top and bottom blades rotate about the point
(0., 0.). However, the blades didn't seem to move. I have checked the
torque using aero.C, it produced a negative value that should make the
blade rotate. Would you give me some suggestions on this kind of problem?
Thanks.

[image: Inline image 1]

Follow-Ups:
- [overture] Re: rigid body motion
  - From: Bill Henshaw

[overture] rigid body motion

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