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September 30, 2013, 05:26 |
Transient Coupled Runner
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#1 |
New Member
Peter
Join Date: Mar 2013
Location: Austria
Posts: 22
Rep Power: 13 |
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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