ReviewLecture1a_2014

Consider an exit stream can also work with area

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Unformatted text preview: on Flux The mass diffusion flux of a species i is normally defined rela2ve to the mo2on of the mixture as a whole: If we sum over all species The diffusive fluxes are not independent! Rela7on between various fluxes Total mass flux of mixture: Species mass flux: Mass diffusion flux: species mass flux mass diffusion flux total mass flux Molar Flow Rates at Entrances and Exits of Control Volumes Area integral of molar flux: Molar concentra7on Recall that the species velocity can be wriUen as mass average velocity diffusive velocity v A = v + uA Normally diffusive flux...
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