Roshko Number

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

 

Roshko Number formula
\(\large{ Ro =  \frac{ f \; l_c^2 }{ \nu }  }\)
Symbol	English	Metric
\(\large{ Ro }\) = Roshko number	\(\large{dimensionless}\)
\(\large{ l_c }\) = characteristic length	\(\large{in}\)	\(\large{mm}\)
\(\large{ f }\) = frequency of vortex shedding	\(\large{dimensionless}\)
\(\large{ \nu }\)  (Greek symbol nu) = kinematic viscosity	\(\large{\frac{ft^2}{sec}}\)	\(\large{\frac{m^2}{s}}\)