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Heat transfer coefficient

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Old   May 15, 2007, 05:49
Default Heat transfer coefficient
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Hi all,

i have a long rectangular channel and the bulk temperature is much lower than the wall temperature but the results that i am getting after surface integral it using area weighted average is negative...What does negative heat transfer coefficient means in FLUENT? is it a reverse flow in the heat transfer? but how could this happen as the wall temperature is much higher than the bulk temperature? thank u in advance...
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Old   May 15, 2007, 08:55
Default Re: Heat transfer coefficient
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the heat transfer coefficient cannot be negative. check your reference temperature.
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