Fourier Number
Fourier number, abbreviated as Fo, also called Fourier modulus, a dimensionless number, is the ratio of heat conduction rate to the rate of thermal energy storage in a solid. This is mainly used in unsteady state heat transfer.
Fourier number formula |
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\(\large{ Fo = \frac{\alpha \; t_c }{l_c^2 } }\) | ||
Symbol | English | Metric |
\(\large{ Fo }\) = Fourier number | \(\large{ dimensionless }\) | |
\(\large{ l_c }\) = characteristic length | \(\large{ ft }\) | \(\large{ m }\) |
\(\large{ t_c }\) = characteristic time | \(\large{ sec }\) | \(\large{ s }\) |
\(\large{ \alpha }\) (Greel symbol alpha) = thermal diffusivity | \(\large{\frac{ft^2}{sec}}\) | \(\large{\frac{m^2}{s}}\) |
Fourier number calculator
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Tags: Heat Transfer Equations Temperature Equations Calculators