how to define initial temperature change with depth

ywan168 · June 5, 2018, 11:58

Hello, folks,

I am modeling a 2-D geometry where outside is rock formation (solid), inside is a well (a hole) with pipe (casing). Fluid is injected through pipe inlet, and flow outlet is at annulus between outside casing and formation. First of all, I need to define the initial temperature of both formation inside and outside. My assumption is initial temperature is the same anywhere with the same depth, and T changes with depth. I don't know how to define or set this condition. If anyone has similar experience, please share with us. Thank you~

Regards,

LuckyTran · June 6, 2018, 09:30

It would help if you state what this initial temperature distribution actually is.... Otherwise I have to assume it is some arbitrary by known (to you) function that can be written down in finite time and you are not too lazy to carry out this task...

You can use a PROFILE or you can just create a custom field function which calculates this temperature field. After you initialize, use the patch command to set the temperature field to this custom field function.

ywan168 · June 7, 2018, 13:59

Yes, I used field function to initialize the temperature profile. Thank you

June 5, 2018, 11:58	how to define initial temperature change with depth	#1
ywan168 Member Join Date: Nov 2016 Posts: 34 Rep Power: 9	Hello, folks, I am modeling a 2-D geometry where outside is rock formation (solid), inside is a well (a hole) with pipe (casing). Fluid is injected through pipe inlet, and flow outlet is at annulus between outside casing and formation. First of all, I need to define the initial temperature of both formation inside and outside. My assumption is initial temperature is the same anywhere with the same depth, and T changes with depth. I don't know how to define or set this condition. If anyone has similar experience, please share with us. Thank you~ Regards,

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June 6, 2018, 09:30		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,675 Rep Power: 66	It would help if you state what this initial temperature distribution actually is.... Otherwise I have to assume it is some arbitrary by known (to you) function that can be written down in finite time and you are not too lazy to carry out this task... You can use a PROFILE or you can just create a custom field function which calculates this temperature field. After you initialize, use the patch command to set the temperature field to this custom field function.

June 7, 2018, 13:59		#3
ywan168 Member Join Date: Nov 2016 Posts: 34 Rep Power: 9	Yes, I used field function to initialize the temperature profile. Thank you