Eckert number

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The Eckert number is a dimensionless number used in flow calculations. It expresses the relationship between a flow's kinetic energy and enthalpy, and is used to characterize dissipation. It is named for the late professor Ernst R. G. Eckert.

It is defined as

<math>

\mathit{Ec}=\frac{V^2}{c_p\Delta T} = \frac{\mbox{Kinetic Energy}}{\mbox{Enthalpy}} </math>

where

• <math>V</math> is a characteristic velocity of the flow.
• <math>c_p</math> is the constant-pressure specific heat of the flow.
• <math>\Delta T</math> is a characteristic temperature difference of the flow.

[edit] See also

v • d • e Dimensionless numbers in fluid dynamics

Archimedes • Bagnold • Biot • Bond • Brinkman • Capillary • Damköhler • Dean • Deborah • Eckert • Ekman • Eötvös • Euler • Froude • Galilei • Grashof • Hagen • Knudsen • Laplace • Lewis • Mach • Magnetic Reynolds • Marangoni • Morton • Nusselt • Ohnesorge • Péclet • Prandtl • Rayleigh • Reynolds • Richardson • Roshko • Rossby• Ruark • Schmidt • Sherwood • Stanton • Stokes • Strouhal • Suratman • Taylor • Weber • Weissenberg • Womersley

de:Eckert-Zahl

nl:Getal van Eckert