# Roshko Number

Roshko number, abbreviated as Ro, a dimensionless number, is describing oscillating flow mechanisms.

## Roshko Number formula

\(\large{ Ro = \frac{ f \; l_c^2 }{ \nu } }\) |

### Where:

\(\large{ Ro }\) = Roshko number

\(\large{ l_c }\) = characteristic length

\(\large{ f }\) = frequency of vortex shedding

\(\large{ \nu }\) (Greek symbol nu) = kinematic viscosity