# inverse heat transfer problem

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 April 8, 2010, 04:57 inverse heat transfer problem #1 New Member   siva Join Date: Apr 2010 Posts: 1 Rep Power: 0 Dear all I wish to solve a 1D heat conduction problem inside a copper block. the bottom end has constant heat flux boundary condition and the top end has a variable heat transfer coefficient. i have measurement data for transient temperature profile at two interior points. How do i estimate the transient heat transfer coefficient? I understand there is no direct option available in fluent.but even if I am supposed to write UDF what is the approach and how to go about the same? other wise are there any open source codes available for solving inverse problems? regards Siva

January 29, 2012, 08:23
#2
Senior Member

Jack
Join Date: Mar 2009
Posts: 106
Rep Power: 15
Hi,

i have the same doubt as you. Take a look at http://www.cfd-online.com/Forums/mai...-possible.html .

Rogerio.

Quote:
 Originally Posted by siva0182 Dear all I wish to solve a 1D heat conduction problem inside a copper block. the bottom end has constant heat flux boundary condition and the top end has a variable heat transfer coefficient. i have measurement data for transient temperature profile at two interior points. How do i estimate the transient heat transfer coefficient? I understand there is no direct option available in fluent.but even if I am supposed to write UDF what is the approach and how to go about the same? other wise are there any open source codes available for solving inverse problems? regards Siva

 February 19, 2019, 02:06 inverse heat transfer #3 New Member   alireza javadpour Join Date: Feb 2019 Posts: 9 Rep Power: 6 hi all, i have a square with heat generation rate inside that, i have three boundary conditions with constant temperature, but i dont have heat flux from one of walls, i want to simulate this problem in Fluent, could you please any one explain me??

February 19, 2019, 08:45
#4
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Lucky
Join Date: Apr 2011
Location: Orlando, FL USA
Posts: 5,238
Rep Power: 63
Quote:
 Originally Posted by alireza7246 hi all, i have a square with heat generation rate inside that, i have three boundary conditions with constant temperature, but i dont have heat flux from one of walls, i want to simulate this problem in Fluent, could you please any one explain me??

You need to know all your boundary conditions.

 February 19, 2019, 14:15 inverse heat transfer #5 New Member   alireza javadpour Join Date: Feb 2019 Posts: 9 Rep Power: 6 i have three wall with constant temperature 300k that is determined but the output heat flux from one wall is unknown, i have temperature within the enclosure that is 400k.

 February 20, 2019, 09:33 #6 Senior Member   Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,238 Rep Power: 63 You need to know all your boundary conditions. End of story.

 February 22, 2019, 06:00 #7 Senior Member   Alexander Join Date: Apr 2013 Posts: 2,259 Rep Power: 33 you should modify your domain for example add solid attached to 4th wall or some fluid zone, depending on your case so you will get other boundaries with known boundary conditions best regards

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