Lewis number
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The Lewis number for a given species <math> k </math> is | The Lewis number for a given species <math> k </math> is | ||
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Latest revision as of 09:55, 17 December 2008
The Lewis number for a given species is
Denoting the heat diffusivity coefficient the Lewis number can be expressed as
which is the ratio of the heat diffusion speed to the diffusion speed of species .
In many combustion models, all species are assumed to diffuse at the same speed and therefore