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Re: Heat transfer coefficient (from Main Forum)

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Old   January 15, 2002, 06:30
Default Re: Heat transfer coefficient (from Main Forum)
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Eugene
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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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