Biot Number

(idea) by Professor Pi (1.6 wk) Wed Oct 04 2000 at 0:46:07

A dimensionless number used in heat transfer in general and unsteady state calculations in particular. Proportional to (Thermal internal resistance) / (Surface film resistance).

Bi = (hT (x2-x1)) / k

hT: heat transfer coefficient, (x2-x1): mid-plane distance, k: thermal conductivity

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