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Search took 0.00 seconds. Search: Posts Made By: ghorrocks
Forum: CFX November 7, 2013, 21:42
Replies: 15
Views: 2,436
Posted By ghorrocks
I was talking about "Mesh Deformation" options...

I was talking about "Mesh Deformation" options under the domains tab.

There has been a lot of new things done in V14 and V14.5. You should upgrade to the latest version of CFX.
Forum: CFX November 4, 2013, 04:35
Replies: 15
Views: 2,436
Posted By ghorrocks
Mesh smoothing options for mesh motion. This is...

Mesh smoothing options for mesh motion. This is in CFX-Pre under domain options.

Output Control > Trn Results just does averaging and other statistical manipulation of the results. This is useful...
Forum: CFX November 3, 2013, 17:20
Replies: 15
Views: 2,436
Posted By ghorrocks
Have a look at the options for mesh smoothing to...

Have a look at the options for mesh smoothing to stop the mesh folding error you are getting.

For adaptive time steps:
Set the initial time step to 1e-4s
Minimum time step size should be 1e-10s...
Forum: CFX November 3, 2013, 16:43
Replies: 15
Views: 2,436
Posted By ghorrocks
If you are modelling a 50Hz vibration you will...

If you are modelling a 50Hz vibration you will need a time step much smaller than 0.01s. Try 1e-4 [s], that is closer to the size you will need.

But a better way of setting the time step size is...
Forum: CFX November 3, 2013, 05:00
Replies: 15
Views: 2,436
Posted By ghorrocks
Your translations are OK, I am starting to...

Your translations are OK, I am starting to understand what you are trying to do.

You might need to run your simulation for many vibration periods before a flow starts up. A short simulation might...
Forum: CFX November 2, 2013, 23:34
Replies: 15
Views: 2,436
Posted By ghorrocks
This sounds simple - just a moving mesh...

This sounds simple - just a moving mesh simulation. You first post says the flow is not how you expect. I would not expect much (or even any) forward flow if you just vibrate a blade.

What flow do...
Forum: CFX November 2, 2013, 23:06
Replies: 15
Views: 2,436
Posted By ghorrocks
So this sounds like a moving mesh application....

So this sounds like a moving mesh application. Does the motion have any twisting or is it just vibration?
Forum: CFX November 2, 2013, 22:46
Replies: 15
Views: 2,436
Posted By ghorrocks
I do not understand what you are trying to do. ...

I do not understand what you are trying to do.

Why does the fan have the vibration? Is the vibration known or is it coupled to the fluid flow?

What is the purpose of doing this model? What...
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