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Grashof number
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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 (Ts - Tinf) L3 ) / ν2
- g gravity
- β volumetric thermal expansion coefficient
- Ts source temperature
- Tinf quiescent temperature
- L characteristic length
- ν kinematic viscosity
See also Reynolds number, fluid mechanics, buoyancy.
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