This is what I work on, among many other things...Originally posted by Puffin83
The ALE formulation uses the displacement boundary conditions applied by the D, DL, and DA commands to update the finite element mesh. It determines the displacement at the beginning of each time step relative to the previous time step. For each time step, an elasticity based morphing algorithm updates the mesh. The algorithm ensures that boundary layers are retained (that is, nodes in a fine mesh area move less than nodes in a coarse mesh area).
A transient analysis cannot proceed if morphing fails. If morphing is independent of the fluid flow solution, you can step through the morphing algorithm before doing a fluid flow analysis to determine whether morphing will fail. To do so, issue the following command sequence:
/solu
.
.
.
fldata,solu,turb,f
fldata,solu,temp,f
fldata,solu,spec,f
fldata,solu,ale,t
fldata,solu,flow,f
solve
You can not check for morphing failure in advance if the time step size depends on the fluid flow variables or the problem involves a free surd.More blah...You like this thread...C'mon! Admit it and be saved!
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I'm not up to par tonight, I'll try tommorow.
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