Grashof number
The
Grashof number is a
dimensionless number which approximates the ratio of buoyancy force to the viscous force acting on a fluid.
- Gr = ( g β (T_{s} - T_{inf}) L^{3} ) / ν^{2}
- g gravity
- β volumetric thermal expansion coefficient
- T_{s} source temperature
- T_{inf} quiescent temperature
- L characteristic length
- ν kinematic viscosity
See also
Reynolds number,
fluid dynamics,
buoyancy.