Physics:Eckert number
From HandWiki
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
- [math]\displaystyle{ \mathrm{Ec} = \frac{u^2}{c_p \Delta T} = \frac{ \mbox{Advective Transport} }{ \mbox{Heat Dissipation Potential}} }[/math]
where
- u is the local flow velocity of the continuum,
- cp is the constant-pressure local specific heat of the continuum,
- [math]\displaystyle{ \Delta T }[/math] is the difference between wall temperature and local temperature.
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