  In this paper we have studied subgrid multiscale stabilized formulation with
dynamic subscales for non-Newtonian Casson fluid flow model tightly coupled
with variable coefficients ADR ($VADR$) equation. The Casson viscosity
coefficient is taken to be dependent upon solute mass concentration. This paper
presents the stability and convergence analyses of the stabilized finite
element solution. The proposed expressions of the stabilization parameters
helps in obtaining optimal order of convergences. Appropriate numerical
experiments have been provided.
