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Forum: CFX

March 19, 2013, 04:42

Replies: 6

Angular Velocity Ramp for Axial Turbine

Views: 2,658

Posted By ghorrocks

Of course ramping the speed like this causes its...

Of course ramping the speed like this causes its own convergence difficulties. It is not an ideal way of doing it.

A much preferable way is to have the impeller running at the constant full speed,...

Forum: CFX

March 17, 2013, 17:26

Replies: 6

Angular Velocity Ramp for Axial Turbine

Views: 2,658

Posted By ghorrocks

If your existing citer*10[rev min^-1] is too...

If your existing citer*10[rev min^-1] is too agressive then isn't the solution simply to reduce the coefficient, maybe citer*1[rev min^-1] or whatever works?

Note that this equation is unbounded...

Forum: CFX

March 16, 2013, 04:57

Replies: 6

Angular Velocity Ramp for Axial Turbine

Views: 2,658

Posted By ghorrocks

What do you mean by "axial velocity ramp each 25...

What do you mean by "axial velocity ramp each 25 iterations"? Why are you doing this?

You could use a CEL expression to automatically link the axial velocity to iteration number but I cannot see...

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