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Drift in Sinusoidal Rigid Body Motion with Two Domains |
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September 22, 2012, 04:17 |
Rigid Body Solver Input
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#1 |
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Josh Yen
Join Date: Jul 2011
Posts: 14
Rep Power: 15 |
Does anyone know why the CFX Rigid Body solver only accepts Torque values above a certain threshold number? This threshold number also seems to depend on the timestep size.
Last edited by dae4god; September 23, 2012 at 23:20. |
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September 24, 2012, 22:59 |
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#2 |
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Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,862
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This sounds very strange. Can you give more details - what torque numbers are you trying to enter? What are you modelling?
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September 24, 2012, 23:45 |
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#3 |
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Josh Yen
Join Date: Jul 2011
Posts: 14
Rep Power: 15 |
Hi ghorrocks,
I actually started a new thread with a title that was more appropriate to the problem - sorry. The new thread is at http://www.cfd-online.com/Forums/cfx...tml#post383433. My simulation involves rotating a rigid body at very small angular accelerations of the order of . However, when I look at the Angular Acceleration Z in one of the CFD-Solver monitors, it shows . Do you know why this happens, or how I can rotate my rigid body at small angular accelerations? |
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drift, rigid body, sinusoidal |
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