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Old   February 15, 2006, 16:45
Default specific heat
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hi I need to make a new material in Fluent. I need to do a solution of salt and water. It`s properties depand of temperature and concetration. How do do density, viscosity I know but what aboute specific heat? Is it possible or not. In my case specific heat change its value with temperature and concetration changes. Haw to deal with this problem???
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Old   February 15, 2006, 22:18
Default Re: specific heat
Seyed Farid Hosseinizadeh
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Hey Man, I think you have to use UDF function. You can see many example about DEFINE_PROPERTY macros in UDF manual. If you don't have this manual please say me. Best Regards, Farid,
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Old   February 16, 2006, 12:18
Default Re: specific heat
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Yes you are right that we can define all properties by UDF. All bur not a specific heat. Bellow is an part of UDF Tutorial:

{".......UDFs cannot be used to de ne speci c heat properties; speci c heat data can be accessed only and not modi ed in FLUENT........" 4.3 Model-Dependent DEFINE Macros} So haw to deal with it? regards
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