Reynolds Number for Liquid

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

Reynolds Number for Liquid Formula

\(\large{ Re = \frac{ 92.1\; SG \; Q }{ d \; \eta }  }\)   

Where:

 Units English Metric
\(\large{ Re }\) = Reynolds number \(\large{ dimensionless }\)  
\(\large{ Q }\) = flow rate of liquid \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\)
\(\large{ d }\) = inside diameter of pipe \(\large{ in}\) \(\large{ mm }\)
\(\large{ SG }\) = liquid specific gravity relative to water (water = 1) \(\large{ dimensionless }\)
\(\large{ \eta }\)  (Greek symbol eta)  = viscosity of liquid \(\large{\frac{lbf - sec}{ft^2}}\) \(\large{Pa-s}\)

 

P D Logo 1

Tags: Flow Equations Liquid Equations