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Grashof Number



         


The Grashof number is a dimensionless number in fluid dynamics which approximates the ratio of the 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







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