Casson fluid flow of rotating magneto-convection in a vertical porous medium

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(1)

Published: Jan. 1, 2025

This study investigates the stability of parallel buoyant magneto-convection in a rotating vertical porous medium filled with Casson fluid. The boundaries are considered isothermal rigid and kept at different uniform temperatures. Based on Darcy's law, Navier–Stokes equation is employed. In linear theory, an eigenvalue problem found using normal mode approach. original three-dimensional cast equivalent two-dimensional form Squire's transformations. Subsequently, solved numerically Chebyshev collocation method. To determine basic flow, was originally Gill's classical proof 1969 [A. E. Gill, “A that convection slab stable,” J. Fluid Mech. 35, 545–547 (1969)]. Various state flow magnetic fields were by varying Prandtl number, ranging from 1×10−5 to 5×10−5. critical conditions exhibited, Rayleigh number (Rc), wave (ac), speed (cc) for onset convective instability computed governing parameters. For unsteady model, occurs through marginal within certain range Chandrasekhar numbers; however, base remains stable throughout. fluid parameter Darcy significantly affect neutral curve flow. Their combined influence contributes Brinkman region. interaction highlights role these parameters determining behavior.

Language: Английский

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Flow of hybrid nanofluids between two permeable corrugated curved walls using Yamada–Ota and Xue models with variable viscosity

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(2)

Published: Feb. 1, 2025

This article investigates the pressure-driven flow of a magnetized hybrid nanofluid confined between two curved corrugated walls in presence slip constraints. The base fluid, water, is augmented with single-walled and multiwalled carbon nanotubes (SWCNTs MWCNTs) to enhance thermal conductivity, evaluated using Xue Yamada–Ota models. channel geometry mathematically modeled an orthogonal curvilinear coordinate system, sinusoidal functions describing corrugation grooves phase differences walls. An analytical solution for velocity temperature profiles derived boundary perturbation method, amplitude as parameter. effects various physical parameters on fields are thoroughly analyzed presented graphs tables. Additionally, key quantities such volumetric rate, skin friction coefficient, local Nusselt numbers numerically computed different parameter values comprehensively tabulated. results reveal significant reduction profile increasing curvature Comparisons indicate that model outperforms terms predictive capability robustness. Finally, trapping process examined detail through construction contour streamlines.

Language: Английский

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Influence of radiation and thermal slip on electrically conductive dusty Walter’s B fluid moving peristaltically through an asymmetric channel

Alexandria Engineering Journal, Journal Year: 2024, Volume and Issue: 106, P. 646 - 653

Published: Aug. 28, 2024

Language: Английский

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Mathematical modeling of electroosmotically driven peristaltic propulsion due to transverse deflections of two periodically deformable curved tubes of unequal wavelengths

Physics of Fluids, Journal Year: 2024, Volume and Issue: 36(11)

Published: Nov. 1, 2024

The present study aims to investigate the viscid fluid propulsion due electroosmosis and transverse deflections of sinusoidally deformable tubes unequal wavelengths in presence electro-kinetic forces. This situation is estimated from physical model physiological flow through a tubular structure which an artificial flexible tube being inserted. In this model, both peristaltically deforming are taken curved configuration. flow-governing momentum equations simplified by approximation long wavelength as compared outer tube's radius, whereas Debye–Hückel used simplify that govern electric potential distribution. Here, authors have DSolve command scientific computing software MATHEMATICA 14 obtain expressions for axial velocity fluid. work, analyzed impact various controlling parameters, such electro-physical curvature parameter, radius ratio, amplitude ratios, on quantities graphically during transport endoscope. contour plots also drawn visualize streamlines observe impacts control parameters trapping. During analysis results, noteworthy outcome extracted increment Helmholtz–Smoluchowski responsible enhancement shear stress at inner wall under influence because double layer (EDL) thickness, gets reduced strengthening parameter. EDL thickness transporting suggests can be enhancing ratio waves travel down walls tube. above-mentioned results play significant role developing advancing endoscopes will useful many biomedical processes, gastroscopy, colonoscopy, laparoscopy.

Language: Английский

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Thermal radiation and Hall current effects on Williamson non-Newtonian peristaltic flow in a debris-encrusted ureteral tube: simulation of urological radiation therapy

International Journal of Modelling and Simulation, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 31

Published: April 22, 2025

Language: Английский

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Artificial neural network aided computing for two dimensional magnetohydrodynamic peristaltic movement of nanofluid with heat and mass transfer

Engineering Applications of Artificial Intelligence, Journal Year: 2025, Volume and Issue: 154, P. 110990 - 110990

Published: May 9, 2025

Language: Английский

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