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nussult no

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Old   August 5, 2008, 03:07
Default nussult no
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about nusselt no

sometimes nusselt no is positive and sometimes it is negative but i think it has nothing to do with if heat is lost by the fluid or gained by the fluid

i think it corresponds to the direction of flow of heat?? is that so ??
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Old   August 8, 2008, 02:14
Default Re: nussult no
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nusselt no is hl/k. how it can be negative?
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