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Old   August 25, 2015, 09:50
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Deepak
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Hi this is deepak, i am new to CFX, after i import mesh file from icem to cfx, i need to create 3 domain, 1 is fluid, 2nd is aircraft solid and 3rd is a propeller (rotating domain), please help me how to define three domain
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Old   August 27, 2015, 03:17
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Here are few slides from my training on CFX. May be they are helpful to you...





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Old   August 28, 2015, 01:06
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better make 3 solids. Make big enough gaps, where they should not touch. Then in the mesher greate named selections or even in the solid modeler, so its easier to select them in Pre and Post processor
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Old   August 28, 2015, 06:09
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Consider whether modelling the propeller directly together with an entire aircraft model is a model you have the resources to achieve. You are going to need a seriously big mesh to get this to work and unless you have the resources of NASA at your fingertips I doubt it will work.

A far more tractable model would be to model the propeller as a momentum source. Then you are just doing a full aircraft model and this is merely a very large model rather than a humongous one.
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Old   August 28, 2015, 07:06
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Maxim
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Quote:
Originally Posted by Steffen595 View Post
better make 3 solids. Make big enough gaps, where they should not touch. Then in the mesher greate named selections or even in the solid modeler, so its easier to select them in Pre and Post processor
I hope you don't mind me asking a follow-up question to this statement in this thread: What is the advantage in modeling an airplane with a propeller as 3 solids?
My approach would've been: create a control volume/domain around the airplane ("filled" with air) and another domain around the propeller. Turbo rotation for the propeller and interfaces with the other domain for inflow/outflow.
I started working with CFX a few weeks ago - so I don't know all the tricks and best practices yet...
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Old   August 28, 2015, 07:56
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I just found it easier to give each solid a domain with different materials and so on. I am just using Ansys occassionally and when I did a porous domain, I thought thats how its done.
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