Relative Viscosity

on . Posted in Fluid Dynamics

Relative viscosity, abbreviated \(\eta_r\), is the ratio of the viscosity of a solution to the viscosity of a solution used.

 

Relative Viscosity formula

\(\large{ \eta_r = \frac {\eta} {\eta_s}  }\) 
Symbol English Metric
\(\large{ \eta_r }\)  (Greek symbol eta) = relative viscosity \(\large{\frac{lbf - sec}{ft^2}}\)  \(Pa-s\) 
\(\large{ \eta }\)  (Greek symbol eta) = viscosity of a solution \(\large{\frac{lbf - sec}{ft^2}}\) \(Pa-s\)
\(\large{ \eta_s }\)  (Greek symbol eta) = viscosity of a solution used \(\large{\frac{lbf - sec}{ft^2}}\) \(Pa-s\)

 

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Tags: Viscosity Equations