Publications

Numerical Study of Radiative and Dissipative <scp>MHD</scp> Casson Nanofluid Over a Cone With High‐Order Chemical Reaction

ABSTRACT This study investigated the dissipative effects on time‐dependent Casson nanofluid motion over a cone, considering variable heat source/absorption and higher‐order reacting species. Water ethylene glycol was employed as the Casson base fluid. The dimensional PDEs were transformed into dimensionless PDEs by fitting non‐dimensional parameters and solved using an effectual Galerkin finite element method (GFEM). The impact of physical parameters on momentum, energy, and concentration profiles is analyzed via graphical representations. The wall friction, thermal, and solutal transport rates are tabularly detailed. It was detected that increasing the absorbency parameter, Eckert number, thermal radiation, and thermal generation improves fluid velocity. Conversely, intensifying the magnetic field, Prandtl number and inclination angle reduces fluid velocity. The nanofluid temperature declines with a mounted Prandtl number and nanoparticle volume fraction, and the opposite effect is perceived with increased Eckert, Dufour, and Soret numbers. Wall friction intensifies with rising porosity, magnetic field strength, Casson parameter, and diffusive parameters, while it diminishes with higher nanoparticle volume fraction. The findings distinctly indicate that nanofluid exhibits superior effectiveness in enhancing thermal and mass exchanges compared to nanofluid. Furthermore, a comparative analysis agrees with earlier findings. This current model problem finds application across various scientific, engineering, and technological domains, including energy production, space exploration, food preservation, agricultural product manufacturing, materials processing, astrophysical phenomena, biomedical procedures, and enhanced oil recovery.

Cross-diffusion process for degradation of methylene blue by unsteady MHD Casson natural heat-driven nanofluid flow via an absorbent vertical heated cone in a porous membrane

<scp>MHD</scp> Flow Dynamics of Brinkman‐Type <scp>EO</scp>‐Based <scp>MoS</scp>₂ Nanofluid Over a Rotatory Disk: Numerical Insights Into Cross‐Diffusion, Hall Current, and Reactive Transport

ABSTRACT In this article, the Hall and cross‐diffusion effects on magnetohydrodynamic engine‐oil based heat‐consuming reactive Brinkman‐type molybdenum disulfide (MoS 2 ) nanofluid with thermal radiation flowing over the rotating disk immersed in a porous medium were prospected. The constituted dimensional flow's directing coupled partial differential equations were reformed into dimensionless partial differential equations by facilitating the suitable scaling variables and thereupon solved numerically by riveting the finite difference scheme. The performance of the flow fields for diversified input parameters is demonstrated via graphical pictures while the shear stresses, Nusselt, and Sherwood numbers via tables by generating numerical data in MATLAB software. This research study entrusted that increased nanoparticles volume fraction enhanced the temperature field and decelerated both velocity fields. The temperature and both velocity fields intensified by the radiation and Dufour effects, but these fields were decayed by the heat absorption processes. The concentration and both velocity fields amplified by the thermo‐diffusion effect. The magnetic field and rotational aspects heighten the secondary velocity and reduce the primary velocity. Both velocity fields decreased by the Brinkman parameter, and the opposite trend was noted with the Hall parameter. The Soret and Dufour effects caused to strengthen the primary shear stress and experience opposite impact in secondary shear stress. The primary shear stress is repressed due to the Brinkman and Hall parameters, and secondary shear stress raises. The Nusselt number upsurges for growing Dufour and radiation parameters, but the time factor has exposed opposite tendency. Increasing Schmidt number and Soret influence assist to deepen the Sherwood number. Furthermore, we accomplished a validation with earlier published outcomes, and an outstanding accord is achieved.

A finite difference study of radiative mixed convection MHD heat propagating Casson fluid past an accelerating porous plate including viscous dissipation and Joule heating effects

A finite difference numerical simulation scrutiny is executed to evaluate the combined impacts of heat generation, buoyancy forces, viscous dissipation and Joule heating in unsteady hydro-magnetic mixed convective chemically reactive and radiative Casson fluid flowing along an exponentially accelerating permeable vertical plate engrossed in a porous media by considering ramp surface concentration and temperature. The dimensionless non-linear coupled PDEs describing the flow model are dealt numerically by adopting the competent implicit Crank-Nicolson finite difference procedure. The variance of velocity, temperature, and concentration distributions are exposed via graphical representations due to the dissimilarity of the flow restrained parameters. Computational outcomes of the skin-friction, Nusselt and the Sherwood numbers are portrayed in the tabular pattern. The final outcomes of the research exposed that the impacts of thermal radiation, viscous dissipation, and heat production parameters enlarges the temperature and velocity distributions. The fluid motion deflates for growing Casson parameter and magnetic field intensity. The rising chemical reaction parameter suppresses the concentration and velocity distributions. Very importantly it is distinguished that fluid momentum, temperature, and concentration are quicker in the instance of isothermal plate temperature than ramp wall temperature. This kind of research may find specific industrial and medical utilizations such as glass manufacturing, crude oil purification, lubrication, paper production, blood transport study in cardiovascular design, etc.

Viscous dissipation effects on heat propagating MHD nanofluid flow induced by the Brownian motion and thermophoresis impacts in a vertical cone with convective surface conditions

This article investigates the effects of viscous dissipation on steady heat propagation through chemically reactive MHD nanofluid flow with mass and heat diffusion features in a vertical cone occupied by saturated porous medium. The flow of nanofluid in the medium resulting from the processes of Brownian motion and thermophoresis. The model is constructed by means of the scrupulous framework of dimensional PDEs accompanied by related initial and boundary conditions. These equations are adeptly renewed by applying appropriate similarity variables to non-dimensional ODEs. The resulting ODEs are solved by combining the 4th order Runge-Kutta method collective with the shooting technique. Flow's pertinent parameters affecting velocity, thermal, and concentration profiles are evaluated and illustrated graphically, while the wall shear-stress, heat and mass flux rates are accurately reported by tables. The thermal and velocity fields continued by viscous dissipation, thermophoresis and radiation effects. An improved Brownian motion begun to degrade concentration field but amended thermal and velocity fields. The strengthened magnetic field caused to decline velocity field but then the porosity fostered velocity field. The influence of thermal resistance ratio elaborated velocity, thermal and concentration fields. The wall friction depreciated with Brownian motion, heat-source and heat dissipation but it was increased with magnetic field. The rate of heat transfer lowered by the radiation and Brownian motion but it was upraised by the heat-source, thermophoresis and Biot number. Likewise, the mass transfer rate diminished by heightened Biot number and thermophoresis but it was increased by the Lewis number, Brownian motion and chemical reaction.

Validation Of Alternate Paths For Motion Of Multiple Robots

Every experiment need to be validated. Without validation, to accept the hypothesis is difficult. In my work, in which 10 robots are taken and its path is destined from original to target position. While the robots starts moving from initial to final position on a particular path, It comes across various obstacles, by which it as to deviate its path in order to avoid collision. Therefore for every such obstacle, alternate paths are generated and the simulated values are compared with experimental(Decision Tree) values and thus the Chi Square test gives the validation.

Thermophoresis and Brownian motion impact on diffusional heat generating MHD Jeffrey nanofluid over an inclined vertical cone with reactive species

This study analyzed the thermophoresis and Brownian motion impacts on a diffusional heat-generating MHD Jeffrey nanofluid over an inclined vertical cone in a permeable medium with chemical reactions and radiation. The physical model developed in terms of dimensional set of PDEs with initial and boundary settings transmuted to dimensionless ODEs with appropriate similarity parameters and are then numerically cracked via the efficient finite element method. The effects of relevant physical quantities on the momentum, energy, and concentration profiles are examined via graphs, whereas the wall friction and rates of thermal and solutal transport are presented in the tables. An increase in radiation, thermodiffusion, porosity, and heat source parameters increased the fluid velocity, whereas an increase in the magnetic field and inclination angle decreased the fluid velocity. The nanofluid temperature is reduced by magnifying the retardation-to-relaxation time ratio parameter, whereas the opposite insinuation is noted with increases in the thermophoresis, Brownian, Dufour, and non-Newtonian parameters. An increase in the Lewis number and Brownian parameters decreased the fluid concentration, but it increased with increasing thermophoresis parameter. The rate of thermal transfer increases as the Dufour parameter increase, whereas the opposite tendency is observed when the radiation, Brownian, and buoyance parameters increase. Moreover, a comparison of the outcomes with those of earlier published works was performed to validate the exactness of the solutions and an outstanding agreement was reached.