Eckert Number

Written by Jerry Ratzlaff on . Posted in Dimensionless Numbers

Eckert Number

Eckert number ( \(Ec\) ) (dimensionless number) is used to calculate the ratio of the kinetic energy to enthalpy.

Eckert Number FORMULA

\(\large{ Ec = \frac{v^2 } {2   v   \triangle T}   }\)     

Where:

\(\large{ Ec }\) = Eckert number

\(\large{ v }\) = flow velocity

\(\large{ c }\) = specific heat

\(\large{ \Delta T }\) = temperature differential

Solve for:

\(\large{ v =  \sqrt  {  2    Ec   c   \triangle T     }    }\)

\(\large{ c = \frac{v^2 } {2   Ec   \triangle T}  }\)

\(\large{ \triangle T = \frac{v^2 } {2   Ec   c}  }\)

 

Tags: Equations for Energy