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Profile transformation method and Frozen rotor method |
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May 24, 2016, 00:35 |
Profile transformation method and Frozen rotor method
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#1 |
Member
misagh
Join Date: Apr 2012
Posts: 64
Rep Power: 14 |
what is the difference between unsteady profile transformation method and steady frozen rotor method? since in both of them the profiles
across the interface are stretched or compressed by the pitch-ratio. How does profile transformation method take into account the unsteady(transient) behavior of Rotor- Stator? thanks in advance |
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May 24, 2016, 09:02 |
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#2 |
Senior Member
Join Date: Jun 2009
Posts: 1,804
Rep Power: 32 |
It is probably better to separate one thing from another..
Profile transformation == profile stretching Frozen Rotor vs Rotor Stator == Fixed Interface|Relative Configuration vs Sliding Interface|Variable Configuration Profile stretching is applied to both interfaces. The unsteady term is always applied to the equations for transient simulations. Hope the above helps, |
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May 24, 2016, 09:45 |
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#3 | |
Member
misagh
Join Date: Apr 2012
Posts: 64
Rep Power: 14 |
Quote:
What do you mean by "Frozen Rotor vs Rotor Stator == Fixed Interface|Relative Configuration vs Sliding Interface|Variable Configuration" Did you mean that the transient terms in only applied to the profile transformation method?(and not to the frozen rotor or stage?) |
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May 24, 2016, 11:55 |
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#4 |
Senior Member
Join Date: Jun 2009
Posts: 1,804
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I clearly stated they are separate topics
Transient simulations always include transient terms for all equations regardless of interface type Profile transformation always stretches the profile, and it is applied at Frozen Rotor and Rotor-stator interfaces regardless of simulation type. Frozen rotor is an interface type where the relative position of the domains on either side of the interface is maintained FIXED. Rotor stator is an interface type where the relative position of the domains on either side of the interface is changing as the rotor moves every time step. Hope the above is a better version of the previous message. |
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May 24, 2016, 12:21 |
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#5 |
Member
misagh
Join Date: Apr 2012
Posts: 64
Rep Power: 14 |
Thanks a lot for your clarification.
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