Rayleigh number
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m (Rayleigh Number moved to Rayleigh number) |
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</math> | </math> | ||
| - | where <math>g =</math> acceleration due to [[gravity]] | + | where <math>g =</math> acceleration due to [[gravity]], |
| - | <math>\alpha =</math> [[coefficient of thermal expansion]] | + | <math>\alpha =</math> [[coefficient of thermal expansion]], |
| - | <math>\Gamma =</math> background [[temperature]] [[gradient]] | + | <math>\Gamma =</math> background [[temperature]] [[gradient]], |
| - | <math>d =</math> length scale of flow | + | <math>d =</math> length scale of flow, |
| - | <math>\nu =</math> [[kinematic viscosity]] | + | <math>\nu =</math> [[kinematic viscosity]] and |
<math>\kappa =</math> [[thermal diffusivity]] | <math>\kappa =</math> [[thermal diffusivity]] | ||
Latest revision as of 03:40, 21 September 2005
The Rayleigh number is the ratio of the buoyancy force to the viscous force in a medium.
where 
acceleration due to gravity,
coefficient of thermal expansion,
background temperature gradient,
length scale of flow,
kinematic viscosity and
thermal diffusivity
