Unsteady Convective Diffusion with Interphase Mass Transfer in Casson Liquid

  • Ashis Kumar Roy Department of Mathematics, National Institute of Technology Agartala, India
  • Apu Kumar Saha Department of Mathematics, National Institute of Technology Agartala, India
  • Sudip Debnath Department of Mathematics, National Institute of Technology Agartala, India

Abstract

This study aims to examine the  dispersion of a passive contaminant of solute released  in Casson liquid flow through a tube. The wall of the tube is taken to be chemically active where the flow is driven by the constant pressure gradient. To evaluate the transport coefficients, Aris-Barton’s Moment technique is considered, a finite difference implicit scheme is adopted to handle the differential equation arises in moment methodology. Also to confirm the results obtained by Aris-Barton’s method,  the generalized dispersion model has been applied. Unlike the previous studies on dispersion in Casson liquid, the time-dependent behavior of the transport coefficients has been established. Some significant observations have been founded, e.g. exchange coefficient is independent of yield stress while the convection coefficient and dispersion coefficient are inversely proportional to yield stress. Results reveal that transport coefficients are enormously affected by wall absorption.

Keywords

casson liquid, longitudinal dispersion, irreversible boundary absorption
Published
09-08-2017
How to Cite
ROY, Ashis Kumar; SAHA, Apu Kumar; DEBNATH, Sudip. Unsteady Convective Diffusion with Interphase Mass Transfer in Casson Liquid. Periodica Polytechnica Chemical Engineering, [S.l.], aug. 2017. ISSN 1587-3765. Available at: <https://pp.bme.hu/ch/article/view/10328>. Date accessed: 26 sep. 2017. doi: https://doi.org/10.3311/PPch.10328.
Section
Articles