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-   -   inverse heat transfer problem (https://www.cfd-online.com/Forums/fluent/74769-inverse-heat-transfer-problem.html)

siva0182 April 8, 2010 04:57
inverse heat transfer problem
 
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

rogbrito January 29, 2012 08:23
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 (Post 253724)
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

alireza7246 February 19, 2019 02:06
inverse heat transfer
 
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??

LuckyTran February 19, 2019 08:45
Quote:
Originally Posted by alireza7246 (Post 725181)
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.

alireza7246 February 19, 2019 14:15
inverse heat transfer
 
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.

LuckyTran February 20, 2019 09:33
You need to know all your boundary conditions. End of story.

AlexanderZ February 22, 2019 06:00
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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