# the material parameters depending on temperature

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 December 22, 2006, 02:51 the material parameters depending on temperature #1 Jason Guest   Posts: n/a Hi,all Now I have fifty groups number,the aluminium density depending on temperature.How can I add this to my material in cfx? Maybe I can add this using CEL, Temp=Densitylower+(Densityupper-Densitylower)*(T-Templower)/(Tempupper-Templower) But it is difficult as there are two many data . Maybe I can use the profile instead. I have no idea. Could someone give me some suggestions? Thank you in advance. Jason

 December 22, 2006, 10:03 Re: the material parameters depending on temperatu #2 opaque Guest   Posts: n/a Dear Jason, Read about 1D interpolation function in the ANSYS CFX-Pre manual. Then, you will input (Temperature,Density) pairs, and let the solver evaluate that for you.. Opaque

 December 22, 2006, 10:37 Re: the material parameters depending on temperatu #3 Jason Guest   Posts: n/a Dear Opaque : Thank you for your help. It is very useful for me. The Units in the Plot seems different from the "Result Units" .For example,I set the thermal conductivity [W m^-1 K^-1] in "result Units", and it turns out [kg m s^-3 K^-1] in the plot in the expression. Is it Okay? Jason

 December 22, 2006, 10:57 Re: the material parameters depending on temperatu #4 opaque Guest   Posts: n/a Dear Jason, [W] = [J s^-1] = [N m s^-1] = [kg m s^-2 m s^-1] = [kg m^2 s^-3] [W m^-1 K^-1] = [kg m^2 s^-3 m^-1 K^-1]= = [kg m s^-3 K^-1] I do not see any problem.. Opaque

 December 22, 2006, 20:54 Re: the material parameters depending on temperatu #5 Jason Guest   Posts: n/a Dear Opaque : I got it. Thank you. yours Jason

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