Nusselt Number
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Nusselt Number
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(After Wilhelm Nusselt, 1882- , German engineer). A number expressing the
ratio of convective to conductive heat
transfer between a solid boundary and a moving fluid, defined as hl/k
where h is the heat-transfer coefficient, l is the
characteristic length, and k is the thermal conductivity of the fluid.
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References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use