Basic Models of Computational Mass Transfer

Abstract The computational mass transfer (CMT) aims to find the concentration profile in process equipment, which is the most important basis for evaluating the process efficiency as well as the effectiveness of an existing mass transfer equipment. This chapter is dedicated to the description of the fundamentals and the recently published models of CMT for obtaining simultaneously the concentration, velocity and temperature distributions. The challenge is the closure of the differential species conservation equation for the mass transfer in a turbulent flow. Two models are presented. The first is a two-equation model termed as model, 

Keywords Computational mass transfer Reynolds averaging Closure of time-averaged mass transfer equation Two-equation model Turbulent mass transfer diffusivity Reynolds mass flux model 

Matrix of inverted Maxwell-Stefan Diffusivities, m s Instantaneous mass concentration of species i, kg m concentration of species i in Sect. 3.4.2, mol s  

Time-average concentration, bulk concentration, kg m mass fraction 

Dimensionless concentration Fluctuating concentration, kg m Variance of fluctuating concentration, kg m Molecular diffusivity, m s  

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Basic Models of Computational Mass Transfer Liquid Inlet... 

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