Abstract The current study aims to explore stagnation spot flow of a micropolar fluid about plain linear exponentially expanding penetrable surface in the incidence radiation and in-house heat production/immersion. Through similarity mapping, mathematical modeling statements are transformed ODE’s numerical results found by shooting techniques. impact varying physical constants on momentum, micr...

The influence of linear, parabolic and inverted temperature gradients on the onset double-diffusive Rayleigh-Darcy convection is theoretically investigated. composite system constrained horizontally by adiabatic free-free thermal boundaries, appropriate interfacial boundary conditions are used to connect fluid-porous layers. regular perturbation approach determine critical Rayleigh number expre...

In this study, the steady hydromagnetic flow of two immiscible couple stress fluids through a uniform porous medium in cylindrical pipe with slip effect is investigated analytically. Essentially, system divided into regions, region I and II, which occupy core periphery system, respectively. The driven by constant pressure gradient applied direction parallel to cylinder’s axis, an external magne...

Abstract: The flow generated by a circular cylinder, performing longitudinal and torsional oscillations, in an infinite expanse of a micropolar fluid is studied under the influence of uniform transverse magnetic field. Analytical expressions for the velocity components and micro rotation components are obtained by using no slip and hyper stick conditions on the boundary of the cylinder. The eff...

In this paper, we discuss an analytical study of unsteady hydro magnetic generalized couette flow of an incompressible electrically conducting couple stress fluid between two parallel plates, taking into account pulsation of the pressure gradient effect and under the influence of periodic body acceleration with phase differenceφ . The solution of the problem is obtained with the help of perturb...

This article deals the Hall and ion slip currents on free convection flow, heat and mass transfer of an electrically conducting couple stress fluid through porous channels with chemical reaction, Soret and Dufour effects. Assume that there is symmetric suction or injection along the expanding or contracting walls, which are maintained at different constant temperatures and concentrations. The g...

The steady flow of an electrically conducting, incompressible micropolar fluid in a narrow gap between two concentric rotating vertical cylinders, with porous lining on inside of outer cylinder, under an imposed axial magnetic field is studied. Beavers and Joseph slip condition is taken at the porous lining boundary. The velocity profiles, coefficient of skin friction on the cylinders are calcu...

The present work investigates numerically the inherent irreversibility in a steady flow of a couple stress fluid through a vertical channel packed with saturated porous substances. The First and Second Laws of Thermodynamics are applied to analyze the problem. The nonlinear governing equations in Cartesian coordinates are obtained and solved numerically using shooting methods together with a Ru...

The effect of temperature-dependent viscosity on heat transfer over a continuous moving surface with variable internal heat generation in micropolar fluids is studied. The fluid viscosity is assumed to vary as inverse linear function of temperature. The governing equations are transformed into dimensionless forms using the stream function and suitable variables then solved numerically using the...