Diffusivity coefficients in multicomponent systems

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Discussion Overview

The discussion revolves around methods for estimating diffusivity coefficients in multicomponent systems, specifically focusing on gas and liquid diffusivities in mixtures such as ethane in air-methane and acetone in water-ethanol.

Discussion Character

  • Exploratory, Technical explanation

Main Points Raised

  • One participant inquires about methods to estimate diffusivities in multicomponent systems.
  • Another participant mentions HCB, prompting a request for clarification on the acronym.
  • A subsequent reply provides the full reference for HCB, identifying it as "Hirschfelder, Curtiss, & Byrd, Molecular Theory of Gases and Liquids."
  • A further contribution references a summary of results from HCB found in the book "Transport Phenomena" by Bird et al.

Areas of Agreement / Disagreement

The discussion does not appear to have reached a consensus on specific methods for estimating diffusivities, and multiple references are provided without clear agreement on their applicability.

Contextual Notes

There are limitations in the discussion regarding the specific methods or models for estimating diffusivities, as well as the assumptions underlying the references mentioned.

maistral
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Hi. Is anyone aware of a method to estimate diffusivities in multicomponent systems?

Ie. Finding the gas diffusivity coefficient of ethane in an air-methane mixture, or the liquid diffusivity coefficient of acetone in a water-ethanol mixture.
 
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Are you familiar with HCB?
 
Bystander said:
Are you familiar with HCB?

Hi, thanks for replying.

I don't even know what the acronym means, sorry.
 
Hirschfelder, Curtiss, & Byrd, Molecular Theory of Gases and Liquids, John Wiley & Sons, Inc., New York, 1954.
 
Also, there is a summary of the results from Hirschfelder, Curtiss, and Bird in the book Transport Phenomena by Bird et al.
 

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