Motivated by emerging applications in bio-microfluidic devices, the present study rigorously examines generalized Taylor–Gill hydrodynamic dispersion of a point source solute injected into microchannel, influenced constant axial static electric field along channel and charged surface with different wall potentials. The engages first-order irreversible chemical reaction at both microchannel walls. By incorporating potentials absorptive coefficients lower upper walls, current transport model...

This study aims at investigating the dispersion process in an oscillatory flow of a layered liquid. The liquid is considered as three-layer where center region Casson surrounded by Newtonian layer flowing through narrow pipe under wall reaction. perturbation technique has been used for solving momentum equations. In order to assist analysis solute transport behavior, Aris-Barton’s method moments utilized, different molecular diffusivities were assumed respective regions, yet be constant....

The analysis of Taylor dispersion in a fluid flowing through narrow pipe is considerable interest among the scientific community. Most studies on primarily considered transversely uniform release contaminant at initial moment, while only few have addressed influence condition process tube flow. present work investigates transient with ring-source solute by means an unsteady two-dimensional transport model. An irreversible absorptive type first-order reaction also considered. model solved...

Abstract The transport of a neutral solute in incompressible electro‐osmotic flow Bingham plastic non‐Newtonian liquid flowing through microchannel is studied theoretically. driven by constant axially applied electric field. non‐dimensional conservation equations with associated boundary conditions are solved Gill's series expansion technique. whole process analyzed using three coefficients, namely, advection coefficient, dispersion coefficient and the apparent asymmetry respectively. mean...

This paper examines the effect of heterogeneous chemical reaction on transport a solute in Casson fluid flow through an annular pipe under periodic pressure gradient. Aris–Barton's method moments is employed to understand process. A finite difference implicit scheme utilized solve momentum equation as well integral moment arising from unsteady convective diffusion equation. Using Hermite polynomial representation, mean concentration distribution axial direction acquired first four central...

Abstract We have studied the effect of addition (a) mica, (b) silane coupling agent, and (c) silane-treated mica on ambient dielectric properties vulcanized styrene-butadiene rubber. It is observed that both constant loss increase as silane, are added. The more pronounced in case than for untreated systems. values constants close agreement with calculated ones obtained from different theories heterogeneous dielectrics. Dielectric strength shows an increasing trend presence mica. At higher...

The present investigation deals with Taylor dispersion of reactive species in Casson liquid an oscillatory flow because the pulsatile pressure gradient.The solute is considered to be chemically active at boundary and also participate a first order reaction within bulk flow.To evaluate transport coefficients, Aris-Barton moment technique considered.The process discoursed detailed respect yield stress, chemical parameter, Womersly number etc.The study reveals that both wall absorption have...

Abstract The study aims to investigate the transport of solute in a packed cylindrical tube, analytically. At wall, experiences an irreversible chemical reaction order-one.The combined action moments method with integral transform technique has been introduced employ Gill’s generalized dispersion model. main goal is full time evaluation various coefficients different superficial flow through porous media together wall reaction. This provides perspective on how influences migration solutes...

Longitudinal dispersion of solute released in an unsteady flow between two coaxial cylinders is re-examined the presence first order chemical kinetics bulk flow. The unsteadiness caused by oscillation outer tube around its axis as well a periodic pressure gradient. Unlike some previous works, gap width annular used typical length scale which physically meaningful to greater extent. In employ method moment, finite difference implicit scheme has been adopted solve Aris integral moment...

This study aims to examine the dispersion of a passive contaminant solute released in Casson liquid flow through tube. The wall tube is taken be chemically active where driven by constant pressure gradient. To evaluate transport coefficients, Aris-Barton’s Moment technique considered, finite difference implicit scheme adopted handle differential equation arises moment methodology. Also confirm results obtained method, generalized model has been applied. Unlike previous studies on liquid,...

The present article purposes to investigate the solute dispersion through an annular pipe in presence of heterogeneous chemical reactions among species and wall annulus. is considered experience a kinetic reversible phase exchange with inner layer irreversible absorption into wall. Two kinds oscillatory flow (Poiseuille Couette flow) are order track complex interactions between velocity distributions reaction parameters. method moments as proposed by Aris-Barton used determine apparent...

The present paper is a study on dispersion of reactive solute in an oscillatory flow two-fluid, three-layer Casson-Newtonian continuum using Aris-Barton's approach. A two-fluid model blood has been considered, the fluid central region taken to be Casson (a core red cell suspension) and peripheral layer plasma modelled as Newtonian fluid. governing equations for velocity distribution have solved perturbation technique, effective coefficient evaluated numerically (FDM) by solving moment...

The unsteady dispersion of a solute has been discussed by the method generalized technique in blood-like liquid flowing through pipe under combined effects finite yield stress and irreversible absorption into wall.The solvent is enacted as three-layered considering center Casson (a core red blood cell suspension) peripheral layer plasma Newtonian liquid. An asymptotic representation for convection coefficients shown only large values time, which will not hamper study physical behavior...

“Poetry is, at bottom, a criticism of life”, says Matthew Arnold. We know that literature is not only faithful artistic representation life but also medicine which cures the maladies society. The purpose correcting wrongs in society taken by some litterateurs to be great responsibility. They cannot accept wrong way going. That why they try amend errors committed people. This practice seen mainly satirical works. In all literatures ages, there are plenty writers who satirises unjust social...