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[ANSYS Meshing] Divergence in Transient solver

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Old   July 16, 2013, 12:48
Default Divergence in Transient solver
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Hello guys,
I've been trying to model a 2D vertical axis wind turbine using a transient solver. I had a tutorial which helped me a lot set up my problem and my code which defined the motion of the blade.
The blade motion is defined by the equation of motion of of a four bar linkage.
I can preview the mesh motion, which is what i need. The problem is that the solution diverges after only 10 iterations !
Do you reckon it's a problem from my code? (but the mesh motion is correct), or the mesh itself(which i highly suspect) or maybe the setup! (what is usually a key factor contributing to divergence in transient solvers)
Many thanks
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Old   July 17, 2013, 03:22
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Matthias Voß
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hi,
could be anything actually.
Quote:
Originally Posted by Elio View Post
I've been trying to model a 2D vertical axis wind turbine using a transient solver.
Which one?
Quote:
Originally Posted by Elio View Post
The problem is that the solution diverges after only 10 iterations !
What is diverging? How is the setup?
How do you know the mesh motion is correct? Remeshing? Morphing?

matthias

P.S.: try to solve ONLY for the mesh motion without any u,v,w,p,eps,...
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2d airfoil mesh, transient convergence

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