Unsteady MHD dusty viscoelastic fluid Couette flow in an irregular channel with varying mass diffusion

• Published in: International journal of heat and mass transfer Vol. 55; no. 11-12; pp. 3076 - 3089
• Main Authors: Sivaraj, R., Rushi Kumar, B.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.05.2012; Elsevier
• Subjects: Applied sciences; Channels; Convective boundary; Couette flow; Diffusion; Dusty viscoelastic fluid; Energy; Energy. Thermal use of fuels; Exact sciences and technology; Flows through porous media; Fluid dynamics; Fundamental areas of phenomenology (including applications); Heat transfer; Magnetohydrodynamics; Magnetohydrodynamics and electrohydrodynamics; Mass transfer; Mathematical models; MHD; Non-newtonian fluid flows; Nonhomogeneous flows; Physics; Theoretical studies. Data and constants. Metering; Unsteady; Varying mass diffusion; Walls; Wavy wall; MHD; Wavy wall; Convective boundary; Dusty viscoelastic fluid; Varying mass diffusion; Viscoelastic fluid; Digital simulation; Unsteady flow; MHD flow; Porous medium flow; Dusts; Heat mass transfer; Couette flow; Modelling; Convection cooling; Incompressible fluid; Magnetic fields; Conducting fluid
• ISSN: 0017-9310; 1879-2189
• DOI: 10.1016/j.ijheatmasstransfer.2012.01.049

The present investigation deals with the study of unsteady, MHD, heat absorbing and chemically reacting dusty viscoelastic (Walter’s liquid model-B) fluid Couette flow between vertical long wavy wall and a parallel flat wall saturated with porous medium subject to convective cooling and varying mass diffusion. The perturbation method is employed to analyze the coupled equations involving nonlinear problem and solution for the velocity, temperature and concentration distributions are obtained analytically. The graphical results are presented and the physical aspects are discussed in detail to interpret the effect of various significant parameters of the problem. The effect of the skin-friction, rate of heat and mass transfer coefficients at the channel walls are tabulated.