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Old   January 23, 2013, 20:06
Default Time dependent material properties
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Hatef Khadivinassab
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Hey all,

How do I assign time dependent material properties?
Your help will be much appreciated!

Thanks,
Hatef
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Old   January 24, 2013, 04:50
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Lance
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well, this will work:
1000 [kg/m^3]*t*1[s^-1]
then just assign the expression to your material.
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Old   January 24, 2013, 05:03
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Hatef Khadivinassab
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Thanks for your reply, I actually tried to use that, but it doesn't work on its own! I guess CFX generates a table for temp. and pres. dependent material properties before the actual numerical iteration starts in order to reference them during simulation. I was wondering if I can manually generate a table for time!?
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Old   January 24, 2013, 05:59
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yep, use a user function. See e.g.
Transient with time-varying boundary conditions
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Old   January 24, 2013, 13:27
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Hatef Khadivinassab
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I have done time dependent boundary condition before, that works fine. But when it comes to defining a new material with time dependent properties, it doesn't like it!
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Old   January 25, 2013, 03:25
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OK, i see - maybe CFX wont allow time-dependent material properties for some reason. What are you trying to achieve? Maybe it can be done in another way?
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