Temperature depedendent of the z coordinate

Nunuuika · November 28, 2011, 05:25

Hello,

I want to simulate a drill pipe. For the outer wall I want the Temperature dependent on the z-coordinate. In which way had to be the expression in cfx for the wall boundary.

I have following table

depth [m] Temperature [K]
0 293
-125 283
-250 278
-500 277
-1000 277

I bulid in Excel the following expression for the curve:

y = 0,00000000000002x5 + 0,00000000014546x4 + 0,00000030610553x3 + 0,00027853765499x2 + 0,11180845335616x + 293

y=Temperature
x=z-coordinate

Thank you for your help.

ghorrocks · November 28, 2011, 17:49

You have already done the hard work, just define this as a CEL expression and use it for your boundary condition. This sort of thing is described int he tutorials.

November 28, 2011, 05:25	Temperature depedendent of the z coordinate	#1
Nunuuika New Member Join Date: Nov 2011 Posts: 5 Rep Power: 15	Hello, I want to simulate a drill pipe. For the outer wall I want the Temperature dependent on the z-coordinate. In which way had to be the expression in cfx for the wall boundary. I have following table depth [m] Temperature [K] 0 293 -125 283 -250 278 -500 277 -1000 277 I bulid in Excel the following expression for the curve: y = 0,00000000000002x5 + 0,00000000014546x4 + 0,00000030610553x3 + 0,00027853765499x2 + 0,11180845335616x + 293 y=Temperature x=z-coordinate Thank you for your help.

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November 28, 2011, 17:49		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,872 Rep Power: 144	You have already done the hard work, just define this as a CEL expression and use it for your boundary condition. This sort of thing is described int he tutorials.