material property

wlt_1985 · October 26, 2010, 23:04

I would like to define two physical properties for a fluid. I am using the material panel to define the properties with defining the user defined database. One is in polynomial form and I define it correctly with help of user guide. Unfortunately, another one is in out of the forms provided by Fluent. What should I do to define this physical property?

bob12 · October 27, 2010, 04:05

i don't understand what you mean in this point: Unfortunately, another one is in out of the forms provided by Fluent.
i think that you want create a new material? so you can change the value and save with another name at this point fluent ask a confirm of operation. you click yes and you have a new matiarial with your physical property.

wlt_1985 · October 27, 2010, 05:44

Quote:

Originally Posted by bob12

i don't understand what you mean in this point: Unfortunately, another one is in out of the forms provided by Fluent.
i think that you want create a new material? so you can change the value and save with another name at this point fluent ask a confirm of operation. you click yes and you have a new matiarial with your physical property.

Yes. I would like to create new material. Hence, I need to define the properties of material. There are a lot of methods in Fluent used for definition, like polynomial, constant etc. Unfortunately, the method I need for properties definition is not available in Fluent. What should I do for the best?

Thanks for help.

bob12 · October 29, 2010, 03:51

i think that you implemented the property of material with a user definiction function. if you see the last term of windows menu are an udf.

KristianEtienne · October 29, 2010, 07:28

Hi,

If you look in section 2.3.16 in the UDF manual you will find a description of the DEFINE_PROPERTY macro with which you can implement (more or less) any form or dependency for your material. There are also a few examples in this section, if you are unfamiliar with UDF programming.

Cheers!

October 26, 2010, 23:04	material property	#1
wlt_1985 Senior Member raymond Join Date: Nov 2009 Posts: 149 Rep Power: 17	I would like to define two physical properties for a fluid. I am using the material panel to define the properties with defining the user defined database. One is in polynomial form and I define it correctly with help of user guide. Unfortunately, another one is in out of the forms provided by Fluent. What should I do to define this physical property?

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October 27, 2010, 04:05		#2
bob12 Member Join Date: Oct 2009 Location: Italy Posts: 88 Rep Power: 17	i don't understand what you mean in this point: Unfortunately, another one is in out of the forms provided by Fluent. i think that you want create a new material? so you can change the value and save with another name at this point fluent ask a confirm of operation. you click yes and you have a new matiarial with your physical property.

October 29, 2010, 03:51		#4
bob12 Member Join Date: Oct 2009 Location: Italy Posts: 88 Rep Power: 17	i think that you implemented the property of material with a user definiction function. if you see the last term of windows menu are an udf.

October 29, 2010, 07:28		#5
KristianEtienne New Member Kristian Etienne Einarsrud Join Date: Oct 2010 Location: Trondheim Posts: 29 Rep Power: 16	Hi, If you look in section 2.3.16 in the UDF manual you will find a description of the DEFINE_PROPERTY macro with which you can implement (more or less) any form or dependency for your material. There are also a few examples in this section, if you are unfamiliar with UDF programming. Cheers!