Influence Of Hall Research Articles

Inclusion of Hall and Ion slip consequences on inclined magnetized cross hybrid nanofluid over a heated porous cone: Spectral relaxation scheme

The cone geometry has a great significant for heat transmission in many industrial processes due to its ability to induce turbulence, enable directional flow, promote uniform temperature distribution, and offer versatility in applications. The current study aims to investigate the heat transport process of an inclined magnetized cross hybrid nanofluid over a heated porous cone under the influence of Hall and Ion slip consequences. Additionally, porous medium the flow is past under the effect of inclined uniform magnetic field and porosity of the medium is used to enhance heat transfer. The framed set of governing equations took the form of dimension free structure through appropriate transformations and then finally solved by an effective spectral relaxation method. Thermal impacts and heat transport mechanism associated with the hybrid flow is seen through different values of emerging parameters. Heat transport is seen higher with higher radiation parameters, as radiation and rising temperature are similar. Augmented values of Fr causes pressure drop in fluids which reduces the fluid motion and brings depreciation in velocity field. Eckert number also boosts the temperature of the fluid stirring via a porous rotating cone.

Influence of Hall and Slip on MHD Reiner-Rivlin blood flow through a porous medium in a cylindrical tube

Influence of Hall and Slip on MHD Reiner-Rivlin blood flow through a porous medium in a cylindrical tube

Analyses of entropy generation and Hall influence in the Cattaneo–Christov double diffusive radiative Non-Darcy flow of a Casson nanofluid within rotating disks

The present research work interprets the entropy generation in the magnetohydrodynamic multiple slip flow of Casson nanofluid initiated due to stretching and coaxially rotating surfaces of two disks inside a non-Darcy porous medium under the dominance of the diacritic Hall current and heat generation. The energy field is explored by incorporating the consequences of distinctive thermal radiation, viscous dissipation, and Joule heating. The present study overcomes the barrier of heat and mass transport by annexing Cattaneo–Christov double diffusion effects. A substantive mathematical problem is modeled by assigning nonlinear partial differential equations together with multiple slip boundary conditions. A compatible similarity transformation comprised in the current study is exerted to produce a set of nonlinear ordinary differential equations with competent boundary conditions. The resulting mathematical model is numerically solved via dispensing the successive linearization method. The present article deals with an in-depth exploration of diagnostic flow parameters’ attributes against the flow field and efficient physical quantities with the help of distinctive graphs and tables. As per regression analysis, the maximum relative error for the regression model on the skin friction coefficient in the radial direction ranging from .0097236 to .017225% is less than that of the other physical quantities. Besides, augmenting the thermophoretic diffusion boosts diluting the concentration of nanoparticles.

Influence of Hall and Ion-Slip Currents on Peristaltic Transport of Magneto-Nanofluid in an Asymmetric Channel

Influence of Hall and Ion-Slip Currents on Peristaltic Transport of Magneto-Nanofluid in an Asymmetric Channel

Influence of Hall and Joule heating on a magnetic nanofluid (Fe3O4) flow on a rotating disk with generalized slip condition

AbstractThis study analyzes Hall current and Joule heating effects on the ferro‐nanofluid flow by the rotation of the disk incorporated with generalized slip condition. By using the well‐known Von Karman transformation, formulated flow equations are modeled into ordinary differential equations. Numerical solutions of the governing flow equations are attained by utilizing the shooting method consolidated with the fourth‐order Runge–Kutta scheme. The impacts of different parameters on skin friction coefficient, velocity, temperature, and Nusselt number are given in graphs and tables and investigated in detail. Furthermore, an association with formerly published articles is given and met in remarkable correspondence.

Influence of Hall on the Motion of a Newtonian Fluid through a Porous Medium in an Inclined Planar Channel with Peristalsis

Influence of Hall on the Motion of a Newtonian Fluid through a Porous Medium in an Inclined Planar Channel with Peristalsis

English

English

Hall and ion slip current’s impact on magneto-sodium alginate hybrid nanoliquid past a moving vertical plate with ramped heating, velocity slip and Darcy effects

PurposeThe purpose of this study is to analyze an unsteady MHD Darcy flow of nonNewtonian hybrid nanoliquid past an exponentially accelerated vertical plate under the influence of velocity slip, Hall and ion slip effects in a rotating frame of reference. The fluids in the flow domain are assumed to be viscously incompressible electrically conducting. Sodium alginate (SA) has been taken as a base Casson liquid. A strong uniform magnetic field is applied under the assumption of low magnetic Reynolds number. Effect of Hall and ion-slip currents on the flow field is examined. The ramped heating and time-varying concentration at the plate are taken into consideration. First-order homogeneous chemical reaction and heat absorption are also considered. Copper and alumina nanoparticles are dispersed in base fluid sodium alginate to be formed as hybrid nanoliquid.Design/methodology/approachThe model problem is first formulated in terms of partial differential equations (PDEs) with physical conditions. Laplace transform method (LTM) is used on the nondimensional governing equations for their closed-form solution. Based on these results, expressions for nondimensional shear stresses, rate of heat and mass transfer are also determined. Graphical presentations are chalked out to inspect the impacts of physical parameters on the pertinent physical flow characteristics. Numerical values of the shear stresses, rate of heat and mass transfer at the plate are tabulated for various physical parameters.FindingsNumerical exploration reveals that a significant increase in the secondary flow (i.e. crossflow) near the plate is guaranteed with an augmenting in Hall parameter or ion slip parameter. MHD and porosity have an opposite effect on velocity component profiles for both types of nanoliquids. Result addresses that both shear stresses are strongly enhanced by the Casson effect. Also, hybrid nanosuspension in Casson fluid (sodium alginate) exhibits a lower rate of heat transfer than usual nanoliquid.Social implicationsThis model may be pertinent in cooling processes of metallic infinite plate in bath and hybrid magnetohydrodynamic (MHD) generators, metallurgical process, manufacturing dynamics of nanopolymers, magnetic field control of material processing, synthesis of smart polymers, making of paper and polyethylene, casting of metals, etc.Originality/valueThe originality of this study is to obtain an analytical solution of the modeled problem by using the Laplace transform method (LTM). Such an exact solution of nonNewtonian fluid flow, heat and mass transfer is rare in the literature. It is also worth remarking that the influence of Hall and ion slip effects on the flow of nonNewtonian hybrid nanoliquid is still an open question.

Thermal Ramp Type of Photo-Thermal Excitation in Hall Current and Variable Thermal Conductivity of Semiconductor Elastic Material

In this article, the variable thermal conductivity which it depending on temperature gradient in context of the photothermal excitation process of a semiconductor elastic material is studied. In the presence of Hall current effect the governing equations is introduced in one dimension subjected to thermal ramp type. The interaction between thermal-elastic-mechanical-plasma waves are used during the models of dual-phase-lag (DPL) and Lord-Shulman (LS) according to thermoelasticity theory. Laplace transform method in one dimension (1D) is used to get the solutions of physical fields quantities under investigation. The mechanical (which describe the case when the traction is free) and thermal ramp type at the free surface are applied through the photo-generated (recombination) transport processes due to the light energy absorption. The inversion of Laplace transform is used to observe the complete solution of physical quantities. The influence of Hall current, thermal memories with variable thermal conductivity are illustrated graphically and discussed on the resulting quantities.

Hydromagnetic free convective flow of Walters’-B fluid over a vertical surface with time varying surface conditions

Purpose In the present investigation, hydromagnetic boundary layer flow of Walters’-B fluid over a vertical porous surface implanted in a porous material under the action of a strong external applied magnetic field and rotation is presented. In several industrial applications, the external applied magnetic field is strong enough to produce Hall and ion-slip currents. Thus, the influence of Hall and ion-slip currents is also considered in this analysis. The flow through configuration is generated because of time varying motion of the free-stream and buoyancy action. Design/methodology/approach Regular perturbation scheme is used to obtain the solution of the system of coupled partial differential equations representing the mathematical model of the problem. Numerical computation has been performed to notice the change in flow behavior and the numerical results for velocity field, temperature field, species concentration, skin friction, rate of heat and mass transfer are presented through graphs and tables. Findings An important fact noticed that the exponential time varying motion of the free-stream induces reverse flow in the direction perpendicular to the main flow. Rising values of the strength of the applied magnetic field give increment in the fluid velocity in the neighbourhood of the vertical surface, this may cause because of the exponential motion of the free-stream. The behaviour of the Darcian drag force is similar as magnetic field on fluid flow. Originality/value In literature, very less research works are available on Walters’-B fluid where unsteadiness in the system occurs because of time varying motion of the free-stream. In this paper, the authors have made an attempt to study the action of Hall and ion-slip currents, rotation and external applied magnetic field on hydromagnetic boundary layer flow of Walters’-B fluid over a vertical surface implanted in a porous material.

Steady MHD Casson Ohmic heating and viscous dissipative fluid flow past an infinite vertical porous plate in the presence of Soret, Hall, and ion‐slip current

AbstractIn the present study, the influence of Hall and ion‐slip current on steady magnetohydrodynamics mixed convective, Ohmic heating, and viscous dissipative Casson fluid flow over an infinite vertical porous plate in the presence of Soret effect and chemical reaction are investigated. The modeling equations are transformed into dimensionless equations and then solved analytically through the multiple regular perturbation law. Computations are performed graphically to analyze the behavior of fluid velocity, temperature, concentration, skin friction, Nusselt number, and Sherwood number on the vertical plate with the difference of emerging physical parameters. This study reflects that the incremental values of Casson fluid parameter and Schmidt number lead to reduction in velocity. However, fluid velocity rises due to enhancement of ion‐slip parameter but an opposite effect is observed in case of Hall parameter. In addition, the Sherwood number declines with enhancing dissimilar estimators of the chemical reaction, Schmidt number, as well as Soret number.

Influence of the near standing hall for wind flowing around group of circular cylinders

This article deals with experimental investigation of air flow around in – line standing circular cylinders and influence of nearby standing hall on external wind pressure distribution. The wind pressure distribution on the structures is an important parameter in terms of wind load calculation. For vertical circular cylinders in a row arrangement only wind force coefficient is possible find in Eurocode. 1991-1-4. External wind pressure coefficient depends on wind direction and the ratio of distance and diameter b. Influence of nearby standing structure is not possible find in Eurocode. The series of parametric wind tunnel studies was carried out in Boundary Layer Wind Tunnel (BLWT) STU to investigate the external wind pressure coefficient in turbulent wind flow. Experimental measurements were performed in BLWT for 2 reference wind speeds, which fulfilled flow similarity of prototype and model. We have compared the results of free in - line standing 3 circular cylinder and influence of hall on distribution of wind pressure at 3 height levels in turbulent wind flow and these results were compared with values in EN 1991-1-4.

MHD Casson Fluid Flow over a Stretching Sheet with Entropy Generation Analysis and Hall Influence.

The impacts of entropy generation and Hall current on MHD Casson fluid over a stretching surface with velocity slip factor have been numerically analyzed. Numerical work for the governing equations is established by using a shooting method with a fourth-order Runge–Kutta integration scheme. The outcomes show that the entropy generation is enhanced with a magnetic parameter, Reynolds number and group parameter. Further, the reverse behavior is observed with the Hall parameter, Eckert number, Casson parameter and slip factor. Also, it is viewed that Bejan number reduces with a group parameter.

Influence of Hall and Ion-Slip Current on Span-Wisecosinusoidally Fluctuating MHD Free Convective Fluid Flow Past an Inclined Porous Plate with Chemical Reaction and Soret Effect

Influence of Hall and Ion-Slip Current on Span-Wisecosinusoidally Fluctuating MHD Free Convective Fluid Flow Past an Inclined Porous Plate with Chemical Reaction and Soret Effect

Influence of Hall and ion-slip currents on unsteady MHD free convective flow of a rotating fluid past an oscillating vertical plate

Influence of Hall and ion-slip currents on unsteady MHD free convective flow of a rotating fluid past an oscillating vertical plate

𝔉-groups and Hall s-semiembedded subgroups

Let [Formula: see text] be a finite group. A subgroup [Formula: see text] of [Formula: see text] is said to be a Hall [Formula: see text]-semiembedded subgroup of [Formula: see text] if [Formula: see text] is a Hall subgroup of [Formula: see text] for any [Formula: see text], where [Formula: see text]. In this paper, we investigate the influence of Hall [Formula: see text]-semiembedded subgroups on the structure of the finite group [Formula: see text]. Some new results about [Formula: see text] to be a [Formula: see text]-group are obtained, where [Formula: see text] is a saturated formation.

Influence of G. Stanley Hall on Yuzero Motora, the First Psychology Professor in Japan: How the Kymograph Powered Motora’s Career in Psychology

Yuzero Motora was the founder of psychology in Japan, acting as an organizer, executive, and administrator of psychological science and practice and as a vocal link between psychology and the larger philosophical and pedagogical community. He studied under Professor G. Stanley Hall and earned his PhD at Johns Hopkins University. An article coauthored by Hall and Motora was published in the first issue of The American Journal of Psychology. Findings presented herein are based partially on the biographical records, articles, and books written by Motora and partially on Motora's personal documents and course curriculum from Johns Hopkins University. We focus on Motora's life and work with Hall at Johns Hopkins, the research described in the article coauthored with Hall and the impact that it had, and the influence of Hall on Motora's career after he returned to Japan.

Perturbation of the energy loss spectra for an accelerated electron beam due to the photo injector exit

The influence of the photoinjector exit hall on the energy loss for an accelerated electron beam is investigated, by calculating the total energy transferred from the electrons to the wakefields, which are driven by the beam. The obtained energy loss is compared to those previously obtained for a ‘pill-box’ cavity [9]. This comparison shows that the influence of this hall, in terms of energy loss, varies over the beam length. It is strongest in the middle of the beam and decreases towards both ends. In consequence of this perturbation, the center of the beam is displaced from its initial position during the first phase ( t t < 250 ps.

Moral Panic: The Legacy of Stan Cohen and Stuart Hall

This article assesses the legacy of Stan Cohen's moral panic thesis in the context of its debt to the discipline of sociology and its appropriation and transformation by Stuart Hall, especially in the relatively neglected major work, Policing the Crisis. This is shown to be a significant, if flawed, paradigmatic legacy for contemporary media and cultural studies where Hall's influence in particular remains remarkably strong. Despite their considerable innovations, Cohen and Hall are found to have reproduced elements of the functionalism of their sources. The article concludes with a consideration of some recent commentators' revisions which may enable a less compromised articulation of this paradigm.

The Influence of Hall on Shakespeare's English Historical Plays

The Influence of Hall on Shakespeare's English Historical Plays