The Eckert number (Ec) is a dimensionless number used in continuum mechanics. It expresses the relationship between a flow's kinetic energy and the boundary layer enthalpy difference, and is used to characterize heat transfer dissipation.[1] It is named after Ernst R. G. Eckert.
It is defined as
where
- u is the local flow velocity of the continuum,
- cp is the constant-pressure local specific heat of the continuum,
- is the difference between wall temperature and local temperature.
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Transcription
References
- ^ "Table of Dimensionless Numbers" (PDF). cchem.berkeley.edu. Retrieved 31 March 2023.