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Eckert number : ウィキペディア英語版
Eckert number

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 dissipation.〔http://www.cchem.berkeley.edu/gsac/grad_info/prelims/binders/dimensionless_numbers.pdf〕 It is named after Ernst R. G. Eckert.
It is defined as
:
\mathrm = \frac = \frac{ \mbox{Heat Dissipation Potential}}

where
* ''u'' is the local flow velocity of the continuum,
* ''cp'' is the constant-pressure local specific heat of the continuum,
* \Delta T is the difference between wall temperature and local temperature.
==References==

Category:Dimensionless numbers of thermodynamics
Category:Continuum mechanics

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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