Changing material property

bhuwal_anurag · August 31, 2015, 03:10

Hello All,
I am working on transient conjugate heat transfer in which solid material properties are changing with time which are thermal conductivity and temperature. Is it possible to change properties with time in fluent 14.5 or can we can use piece wise polynomial ??

LuckyTran · August 31, 2015, 12:55

A temperature dependent conductivity is straightforward to implement which would be an implicit function of time. Built-in, Fluent will let you define polynomial functions of temperature for material properties.

Are you asking specifically about material properties that are explicitly time-dependent? Time-dependent material properties are a questionable approach but this can be done with a user-defined function.

August 31, 2015, 03:10	Changing material property	#1
bhuwal_anurag New Member anurag Join Date: Aug 2015 Posts: 6 Rep Power: 10	Hello All, I am working on transient conjugate heat transfer in which solid material properties are changing with time which are thermal conductivity and temperature. Is it possible to change properties with time in fluent 14.5 or can we can use piece wise polynomial ??

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August 31, 2015, 12:55		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,668 Rep Power: 65	A temperature dependent conductivity is straightforward to implement which would be an implicit function of time. Built-in, Fluent will let you define polynomial functions of temperature for material properties. Are you asking specifically about material properties that are explicitly time-dependent? Time-dependent material properties are a questionable approach but this can be done with a user-defined function.