# Galileo Number

Galileo number, abbreviated as Ga, is a dimensionless number used in fluid dynamics to describe fluid film flow over walls. It is a ratio of forces present in the flow of viscous fluids. The Galileo Number is used in the momentum of heat transfer, viscous flow, thermal expansion.

\(\large{ Ga = \frac{ g \; l^3 \; \mu^2 } { \rho^2 } }\) Where: \(\large{ Ga }\) = Galileo number \(\large{ l_c }\) = characteristic length \(\large{ \rho }\) (Greek symbol rho) = density \(\large{ g }\) = gravitational acceleration \(\large{ \mu }\) (Greek symbol mu) = viscosity |