# Richardson number

Written by Jerry Ratzlaff on . Posted in Dimensionless Numbers

Richardson number, abbreviated as Ri, a dimensionless number, is the ratio of the buoyancy term to the flow shear term.

### Richardson Number Formula

$$\large{ f = \frac{ Gr }{ Re^2 } }$$

Where:

$$\large{ Ri }$$ = Richardson number

$$\large{ Gr }$$ = Grashof number

$$\large{ Re }$$ = Reynolds number