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Enabling Acceleration in Moving Reference Frame

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Old   May 3, 2009, 10:42
Default Enabling Acceleration in Moving Reference Frame
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jpo
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Dear All,

Is there a UDF to enable acceleration of moving reference frame (MRF) in Fluent 6.2? The standard Fluent capabilities allow only for a constant angular velocity.

This thread:
UDF to change Rotation Speed in a MRF simulation
says that such UDF exists on fluentusers.com


Where should I look for it? (which directory, path, section etc)
Regards.
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Old   October 8, 2009, 10:24
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Can you shed some light on how to implement this if you ever found it?

Thank you.
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Old   October 8, 2009, 12:26
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Hello,

Please read this thread:
http://university.fluent.com/forum/v...a13ec3903bf2ac

It explains the solution. As I recall, I generated a profile for the rotation of the entire system and used dynamic mesh.

Regards.
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Old   October 8, 2009, 12:43
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Thanks for your answer. Actually I want to accelerate the reference frame, not rotating but translating it.

I cannot access fluentusers.com but I think it suggests to use a dynamic mesh. I assume this means moving the object instead of the fluid, doesn't it? The problem with using a dynamic mesh is that the body displacement is much larger than the domain size...
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Old   October 8, 2009, 13:29
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Yes, I needed to rotate the entire domain. You can control displacement with your UDF/profile.
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