How to assign material properties when they are varying with temperature

Sorabh · September 4, 2018, 10:00

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, 13:27

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, 00:28

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, 01:35

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

Regards.

September 4, 2018, 10:00	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, 01:35		#4
rewol Member Refik Join Date: Dec 2014 Location: Turkey Posts: 65 Rep Power: 12	Using a curve-fit function, get the polynomial coefficients and insert them into material properties in FLUENT. Regards. Zigec likes this.

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September 4, 2018, 13:27		#2
Zigec New Member Ziga Join Date: Feb 2016 Location: Maribor, Slovenia Posts: 27 Rep Power: 11	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