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August 25, 2015, 09:50 |
domain creation
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#1 |
New Member
Deepak
Join Date: Jul 2014
Posts: 2
Rep Power: 0 |
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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August 28, 2015, 01:06 |
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#3 |
Senior Member
Join Date: May 2012
Location: Melbourne
Posts: 161
Rep Power: 13 |
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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August 28, 2015, 06:09 |
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#4 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,701
Rep Power: 143 |
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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August 28, 2015, 07:06 |
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#5 | |
Senior Member
Maxim
Join Date: Aug 2015
Location: Germany
Posts: 415
Rep Power: 12 |
Quote:
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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August 28, 2015, 07:56 |
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#6 |
Senior Member
Join Date: May 2012
Location: Melbourne
Posts: 161
Rep Power: 13 |
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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