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Characteristic length in Nusselt number

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Old   October 8, 2017, 11:33
Default Characteristic length in Nusselt number
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Ashraful Alam
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Hi, I'm new in Fluent and Heat transfer. I'm trying to simulate a 2D natural convection in an enclosure. My questions are:

What is the characteristic length in Nusselt number for that geometry? How can i find that?

Please help me in this matter.
Thank you!
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Last edited by Ashraful Alam; October 8, 2017 at 14:40.
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