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-   -   Re: Heat transfer coefficient (from Main Forum) (http://www.cfd-online.com/Forums/phoenics/51327-re-heat-transfer-coefficient-main-forum.html)

Eugene January 15, 2002 06:30

Re: Heat transfer coefficient (from Main Forum)
 
I have next geometry from Phoenics 3.3

<img src=http://htex.mpei.ac.ru/~krinitsky/img/image002.jpg>

And I want to calculate Heat Transfer Coefficient along fins.

<img src=http://htex.mpei.ac.ru/~krinitsky/img/image003.gif>

This is Temperature distribution in solid along Z of central fin.

<img src=http://htex.mpei.ac.ru/~krinitsky/img/image004.gif>

STAN is max of Stn_turb and Stn_lam

<img src=http://htex.mpei.ac.ru/~krinitsky/img/image005.gif>

As you can see, STAN greater to conners of channel

<img src=http://htex.mpei.ac.ru/~krinitsky/img/image006.gif>

It's look like good, but:

<img src=http://htex.mpei.ac.ru/~krinitsky/img/image1.gif>

<img src=http://htex.mpei.ac.ru/~krinitsky/img/image2.gif>

<img src=http://htex.mpei.ac.ru/~krinitsky/img/image3.gif>

<img src=http://htex.mpei.ac.ru/~krinitsky/img/image4.gif>

<img src=http://htex.mpei.ac.ru/~krinitsky/img/image5.gif>

<img src=http://htex.mpei.ac.ru/~krinitsky/img/image6.gif>

And after that we have:

<img src=http://htex.mpei.ac.ru/~krinitsky/img/image7.gif>

Where AlfaNorm is Alfa0 and Alfa1 from STAN

But to corner is higher!!! Why?



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