Upshot of heterogeneous catalysis in a nanofluid flow over a rotating disk with slip effects and Entropy optimization analysis

Abstract

The present study examines homogeneous (HOM)–heterogeneous (HET) reaction in magnetohydrodynamic flow through a porous media on the surface of a rotating disk. Preceding investigations mainly concentrated on the catalysis for the rotating disk; we modeled the impact of HET catalysis in a permeable media over a rotating disk with slip condition at the boundary. The HOM reaction is followed by isothermal cubic autocatalysis, however, the HET reactions occur on the surface governed by first-order kinetics. Additionally, entropy minimization analysis is also conducted for the envisioned mathematical model. The similarity transformations are employed to convert the envisaged model into a non-dimensional form. The system of the modeled problem with ordinary differential equations is analyzed numerically by using MATLAB built-in bvp4c function. The behavior of the emerging parameters versus the thermal, concentration, and velocity distributions are depicted graphically with requisite discussion abiding the thumb rules. It is learned that the rate of the surface catalyzed reaction is strengthened if the interfacial area of the permeable media is enhanced. Thus, a spongy medium can significantly curtail the reaction time. It is also noticed that the amplitude of velocity and thermal profile is maximum for the smallest value of the velocity slip parameter. Heat transfer rate declines for thermophoresis and the Brownian motion parameter with respect to the thermal slip parameter. The cogency of the developed model is also validated by making a comparison of the existing results with a published article under some constraints. Excellent harmony between the two results is noted.

Mixed convection flow of viscoelastic Ag-Al2O3 /water hybrid nanofluid past a rotating disk

“…Recently, the impacts of multiple slip on flow of micropolar nanofluid near a rotating disk was investigated by Zemedu and Ibrahim [20]. Very recently, the slip influences and entropy generation in MHD flow via a permeable rotating disk was inspected by Ramzan et al [21].…”

Analysis of Magnetohydrodynamic Micropolar Nanofluid Flow due to Radially Stretchable Rotating Disk Employing Spectral Method

“…In recent times, [7] analyzed CNTethylene glycol nanofluid flow caused by a stretchable rotating disk with the Cattaneo-Christov heat flux model. [8] investigated entropy generation, and slip persuades in magnetohydrodynamic flow through a permeable rotating disk. [9] observed the flow of the Maxwell nanofluid overstretching permeable rotating disk, whereas the flow of mixed convection viscoelastic hybrid nanofluid past a rotating disk was examined by [10].…”

Insight into Hydrodynamics Behavior of Creeping Flow of Couple Stress Fluid Through Uniformly Porous Rectangular Channel under the Influence of Walls Slip; An analytical approach.

“…They employed the Runge-Kutta shooting scheme to analyze the problem and calculate velocities and other relevant quantities. Ramzan et al [28] investigated the effects of heterogeneous and homogeneous reactions in MHD nanofluids through a porous medium with slip conditions at the walls. They employed MATLAB's bvp4c to numerically explore the problem.…”