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inverse heat transfer problem

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Old   April 8, 2010, 04:57
Default inverse heat transfer problem
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siva
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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
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Old   January 29, 2012, 08:23
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Jack
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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 View Post
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
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Old   February 19, 2019, 02:06
Default inverse heat transfer
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alireza javadpour
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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??
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Old   February 19, 2019, 08:45
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Quote:
Originally Posted by alireza7246 View Post
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.
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Old   February 19, 2019, 14:15
Default inverse heat transfer
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alireza javadpour
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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.
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Old   February 20, 2019, 09:33
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You need to know all your boundary conditions. End of story.
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Old   February 22, 2019, 06:00
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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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