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heat transfer not working well

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Old   March 1, 2005, 02:22
Default heat transfer not working well
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ocy
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Hi all,

I have a vertical duct where there is air inside.

The bottom walls of the duct heat up the air as it flows in through the inlet.

When i remove the insulation of the wall, only a small region near the wall shows temp decrease. The main bulk of the air still maintains a high temp.

Is this normal? or have i done something wrong? Pls help. Thanks in advance
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Old   March 2, 2005, 12:42
Default Re: heat transfer not working well
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Evan Rosenbaum
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Check your flow regime. If you have laminar flow, you would expect a near-wall effect only.
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