How to assign material properties when they are varying with temperature

Sorabh · September 4, 2018, 11:00

Hello,
I am trying to simulate the laser melting of a magnesium alloy. The properties of the alloy vary with temperature.

How do I enter these values in the FLUENT solver when I create a new material?

Thanks.

Zigec · September 4, 2018, 14:27

Plot them in excel and put the trend line over it to get the coefficients, after that you should be able to do it this way:
http://jullio.pe.kr/fluent6.1/help/html/ug/node282.htm

Sorabh · September 5, 2018, 01:28

Quote:

Originally Posted by Zigec

Plot them in excel and put the trend line over it to get the coefficients, after that you should be able to do it this way:
http://jullio.pe.kr/fluent6.1/help/html/ug/node282.htm

Hi! I made a plot on Excel:

X-axis indicates temperature, while Y-axis indicates density. What should I do next?

rewol · September 5, 2018, 02:35

Using a curve-fit function, get the polynomial coefficients and insert them into material properties in FLUENT.

Regards.

September 4, 2018, 11:00	How to assign material properties when they are varying with temperature	#1
Sorabh Member Saurabh Das Join Date: Jul 2018 Posts: 43 Rep Power: 8	Hello, I am trying to simulate the laser melting of a magnesium alloy. The properties of the alloy vary with temperature. How do I enter these values in the FLUENT solver when I create a new material? Thanks.

September 5, 2018, 02:35		#4
rewol Member Refik Join Date: Dec 2014 Location: Turkey Posts: 61 Rep Power: 12	Using a curve-fit function, get the polynomial coefficients and insert them into material properties in FLUENT. Regards. Zigec likes this.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Error - Solar absorber - Solar Thermal Radiation	MichaelK	CFX	12	September 1, 2016 06:15
Calculation of the Governing Equations	Mihail	CFX	7	September 7, 2014 07:27
convergenceof natural convection prob. in cfx	cpkewat	CFX	15	January 31, 2014 07:29
Temperature dependent material properties	stuart230588	CFX	1	November 21, 2013 17:36
Properties of air versus temperature AND pressure	Vincent	Main CFD Forum	5	July 28, 2008 07:28

September 4, 2018, 14:27		#2
Zigec New Member Ziga Join Date: Feb 2016 Location: Maribor, Slovenia Posts: 27 Rep Power: 10	Plot them in excel and put the trend line over it to get the coefficients, after that you should be able to do it this way: http://jullio.pe.kr/fluent6.1/help/html/ug/node282.htm