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Multi-passage Simulation in CFX

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Old   February 16, 2020, 08:43
Default Multi-passage Simulation in CFX
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Hey guys,
I'd like to do a 8-passage, unsteady simulation of axial compressor at near stall condition. In order to do so, I simulated a single passage model at near stall condition, and used the single passage result as the initial flow filed of the multi-passage model. However, the simulation seems to crash. I checked the boundary condition for many times, so the boundary setup is correct. Therefore, I suppose whether there will be a mistake during the single passage result transforming to the multi-passage initial flow field.

Best regards,

Da
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Old   February 17, 2020, 01:03
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Write a backup / transient output at the initial time step. That should allow you to check how the single passage result was applied to your multi-passage setup.
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Old   February 17, 2020, 08:50
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How did you initialize from single passage to multi-passage setup?
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Old   February 17, 2020, 22:22
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Quote:
Originally Posted by AtoHM View Post
Write a backup / transient output at the initial time step. That should allow you to check how the single passage result was applied to your multi-passage setup.
Thank you very much. I checked the output at initial time step, the result is definitely wrong. So do you have any ideas on initial the simulation from single passage to multi-passage?
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Old   February 17, 2020, 22:25
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How did you initialize from single passage to multi-passage setup?
I just input the single simulation results as the initial file in Solver-manager. I checked the initial time step output, and find that this method seems improper. Can you give me some suggestion on that?
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Old   February 18, 2020, 01:08
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Yes. There is a tool to make a rotational copy of the results to the other passages. I forgot the naming of it ... but there was a thread here some time ago ...

Interpolating Segment-Result on Full-Cylinder-Model as initial Condition
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Old   February 19, 2020, 22:50
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Yes. There is a tool to make a rotational copy of the results to the other passages. I forgot the naming of it ... but there was a thread here some time ago ...

Interpolating Segment-Result on Full-Cylinder-Model as initial Condition
Thank you sooooo much. The problem has been solved!!!
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