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Dimensionless quantity characterising the development of Natural Thermal Convection:
(1) | \mbox{Ra} = \mbox{Gr} \cdot \mbox{Pr} = \frac{g \, \beta \, \Delta T \, L^3}{\nu \cdot a} |
where
\Delta T | Temperature gradient | \nu | Kinematic viscosity |
---|---|---|---|
\beta | Thermal expansion coefficient | ||
L | Characteristic length of Natural Thermal Convection | g | Standard gravity constant |
See also