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Problem with interface between rotating and static domain

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Old   March 2, 2016, 17:30
Exclamation Problem with interface between rotating and static domain
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Mathieu
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Hi guys,

I'm trying to simulate an hydrokinetic turbine, so I split my domain with a rotating and static domain. My problem is the connection between theses two interfaces...I you take a look at the streamline, the vortex downstream the turbine just stop immediately at the end of my rotating domain and begins before the blades! I could use some help here..

In CFX-Pre, my interface setting for interface models are :
option : general connection
Frame change : Frozen rotor


Thank you for your help!
Attached Images
File Type: png SIMU_interface.png (127.3 KB, 29 views)
File Type: jpg Streamline_v2.jpg (67.5 KB, 23 views)

Last edited by Math13570; March 2, 2016 at 19:56.
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Old   March 3, 2016, 21:40
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Do you use the sliding mesh technique?
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Old   March 4, 2016, 06:55
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Is your simulation converged? Have you run it long enough to convect the flow to the outlet? This is exactly what happens if you have not run it long enough.
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Old   March 4, 2016, 21:05
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Quote:
Originally Posted by Math13570 View Post
Hi guys,

I'm trying to simulate an hydrokinetic turbine, so I split my domain with a rotating and static domain. My problem is the connection between theses two interfaces...I you take a look at the streamline, the vortex downstream the turbine just stop immediately at the end of my rotating domain and begins before the blades! I could use some help here..

In CFX-Pre, my interface setting for interface models are :
option : general connection
Frame change : Frozen rotor


Thank you for your help!
What you called "vortex" is the relative streamlines that will be ONLY seen in the rotating frame of reference domain. What is wrong with those pics? They look normal.

Last edited by turbo; March 5, 2016 at 12:42.
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