Aeration Number

Written by Jerry Ratzlaff on . Posted in Dimensionless Numbers

aeration number 1Aeration Number, abbreviated as \(N_a\), a dimensionless number, is used for the agitated mixing of gas and liquids.


Aeration Number formula

\(\large{ N_a = \frac{ Q }{ n \; d^3 }  }\) 
Symbol English Metric
\(\large{ N_a }\) = Aeration number \(\large{dimensionless}\)  
\(\large{ Q }\) = volumetric flow rate of gas \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\)
\(\large{ n }\) = rotational speed \(\large{\frac{deg}{sec}}\) \(\large{\frac{rad}{s}}\)
\(\large{ d }\) = diameter of impeller \(\large{in}\) \(\large{mm}\)


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Tags: Gas Equations Liquid Equations