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Eckert number

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

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


  • V is a characteristic velocity of the flow.
  • cp is the constant-pressure specific heat of the flow.
  • ΔT is a characteristic temperature difference of the flow.

See also

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Eckert_number". A list of authors is available in Wikipedia.
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