ABSTRACT This paper investigates journal bearings, and builds a lubrication model taking into account misalignment, the lubricant couple stress effect shear thinning. In order to explore sensitivity of fluid performance oil film thickness, we introduce critical thickness coefficient. The results show that increases with increase coefficient, it is highest in area minimum thickness. Compared par...

We show that a micropolar fluid model successfully describes granular flows on a slope. Micropolar fluid is the fluid with internal structures, and the coupling between the rotation of each particle and the macroscopic velocity field is taken into account; it is a hydrodynamical framework suitable for granular systems which consists of particles with macroscopic size. It is demonstrated that th...

The paper aims the heat transfer analysis for the flow of two immiscible micropolar fluids inside a horizontal channel, by the first and second laws of thermodynamics under the action of an imposed transverse magnetic field. The plates of the channel are maintained at constant temperatures higher than that of the fluid. The flow region consists of two zones, the flow of the heavier fluid taking...

In the article, we aim to investigate well-posedness of solution and regularity global attractor for couple stress fluid in saturated porous media with local thermal non-equilibrium effect. To be more specific, firstly show existence uniqueness weak model by making use standard Galerkin method. Second, relying on verifying uniformly compact condition required, prove space where resides. Finally...

Pulsatile flow of blood through a porous medium has been studied under the influence of periodic body acceleration by considering blood as a couple stress, incompressible, electrically conducting fluid in the presence of magnetic field. An exact solution of the equation of motion is obtained by applying the Laplace and finite Hankel transforms. The expressions for axial velocity, flow rate, flu...

Abstract The paper deals with a theoretical study on blood flow in stenosed segment of an artery, when is mixed nano-particles. Blood treated here as couple stress fluid. Stenosis known to impede and be the cause different cardiac diseases. Since arterial wall weakened due stenosis, it may lead dilatation /aneurysm. homotopy perturbation technique employed determine solution problem for case mi...

In the present work, entropy generation in the flow and heat transfer of couple stress fluid through an infinite inclined channel embedded in a saturated porous medium is presented. Due to the channel geometry, the asymmetrical slip conditions are imposed on the channel walls. The upper wall of the channel is subjected to a constant heat flux while the lower wall is insulated. The equations gov...

The effect of magnetic field on peristaltic transport of a couple stress fluids in non-uniform two dimensional channels has been studied. Long wavelength and low Reynolds number approximation is used to linearize the governing equations. The expressions for pressure gradient and frictional force are obtained by using boundary conditions. The effects of various parameters on channel are discusse...

This communication reconsiders and reorganises parts of existing knowledge that refers to Cosserat-type hyperelasticity formulations in a manner respects pays tribute the early development pattern couple-stress theory and, also, associates with it more recent findings relevant discoveries related certain type polar hyperelastic behaviour fibrous composites. It further shows these different bran...