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Forum: Fluent UDF and Scheme Programming

May 31, 2013, 02:56

Replies: 12

2D Pitching Airfoil

Views: 3,586

Posted By blackmask

Thanks, I am OK. The sliding mesh is...

Thanks, I am OK.

The sliding mesh is sufficient for your purpose. Use

DEFINE_TRANSIENT_PROFILE

for time varying rpm. Otherwise you do not need UDF at all.

Forum: Fluent UDF and Scheme Programming

May 6, 2013, 01:52

Replies: 12

2D Pitching Airfoil

Views: 3,586

Posted By blackmask

I assume that you can tell the difference between...

I assume that you can tell the difference between pitch angle, say beta, and angular velocity, say omega. And you should know they are related by
omega[2] = d (beta) / dt (#)
While
beta(t) = 0.5...

Forum: Fluent UDF and Scheme Programming

May 6, 2013, 00:56

Replies: 12

2D Pitching Airfoil

Views: 3,586

Posted By blackmask

Note that omega is angular speed rather than the...

Note that omega is angular speed rather than the angle of attack. You angular speed is always non-negative so that your airfoil is always pitch in the same direction. You need something like
d 0.5 *...

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