Effect of couple stresses on the unsteady convective diffusion in fluid flow through a channel.

Abstract:

:A generalized dispersion model is used to obtain exact solution for unsteady convective diffusion in the presence of couple stresses. The effect of the couple stress parameter 'a' on the most dominant dispersion coefficient is clearly depicted. The dimensionless mean concentration distribution is obtained as a function of dimensionless axial distance, time and 'a'. The results for 'pure convection' are also reported. It is shown that the effect of couple stress is predominant only for small values of 'a' and when a----infinity the flow characteristics tend to their equivalents in Newtonian theory. The results of Taylor's dispersion model are recovered as a particular case in the limit tau----infinity.

journal_name

Biorheology

journal_title

Biorheology

authors

Rudraiah N,Pal D,Siddheshwar PG

doi

10.3233/bir-1986-23404

subject

Has Abstract

pub_date

1986-01-01 00:00:00

pages

349-58

issue

4

eissn

0006-355X

issn

1878-5034

journal_volume

23

pub_type

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