Roshko Number

Written by Jerry Ratzlaff on . Posted in Dimensionless Numbers

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 \(\large{\frac{ft^2}{sec}}\) \(\large{\frac{m^2}{s}}\)

 

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Tags: Flow Equations Fluid Equations