# Grashoff number

From AMS Glossary

## Grashoff number

(Abbreviated Gr.) A nondimensional parameter used in the theory of heat transfer, defined by where

*L*is a representative length,*T*_{1}and*T*_{0}representative temperatures,*g*the acceleration of gravity, and ν the kinematic viscosity.The Grashoff number is associated with the Reynolds number and the Prandtl number in the study of convection.