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Transient Coupled Runner

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Old   September 30, 2013, 05:26
Default Transient Coupled Runner
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pps
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Peter
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Hello!

I have to couple a runner with a stayvanering. The stayvanering is meshed in ICEM, the runner with turbogrid, so I have one mesh as .cfx5 and one as .gtm.

To start a transient simulation I need an initial solution. So i started with an "frozen rotor"-simulation. (stage didn't work)

The first problem with frozen rotor is, that the flow isn't continuous at my interface between runner and stayvanering. (see picture)

The second problem: at the transient simulation my monitorpoint c_p swings too much and is not in the expected range. It also swings with an unexpected frequency.(..swings not with the blade passing frequency)


I think, both problems are result of an bad interface between runner and stayvanering.
Has anybody ideas what exactly could be wrong?

Thx!
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