Hydrodynamic and thermosolutal analysis of MHD ternary hybrid nanofluids in BFS configuration: high-order FEM for drag reduction and thermal enhancement DOI
Shafqat Hussain

International Journal of Numerical Methods for Heat &amp Fluid Flow, Год журнала: 2025, Номер unknown

Опубликована: Май 29, 2025

Purpose This study aims to numerically investigate the combined effects of thermosolutal convection, magnetohydrodynamics (MHD) and radiative heat transfer in a backward-facing step (BFS) channel filled with ternary hybrid ferrofluid suspension (Cu–Fe 3 O 4 –CoFe 2 /water) modeled as Casson fluid. The primary objective is analyze how key parameters, such Reynolds number ( Re ), Hartmann Ha Lewis Le ) obstacle positioning, influence hydrodynamic forces (drag lift coefficients), mass flow stability. provide actionable insights for optimizing thermal management systems, enhancing microfluidic device performance advancing biomedical applications involving nanofluids non-Newtonian fluids. Design/methodology/approach governing equations mass, momentum, energy solute transport are solved using high-order finite element method (FEM), nonlinearities addressed via Newton’s method. Time integration carried out nonstationary scheme based on backward differentiation formula (BDF). model accounts magnetohydrodynamic effects, radiation rheological behavior numerical implementation validated against experimental data benchmark solutions prior performing simulations. Findings Key results show that nanofluid enhances transfer, 1.03% increase Nusselt number, while fluid reduces drag stabilizes reattachment. Increasing enlarges recirculation zones but decreases coefficient CD by 95%. In contrast, higher increases 92% due Lorentz forces. Obstacle positioning significantly alters forces, minimal at display="inline">y0=0.7H maximum shear-induced display="inline">y0=1.3H . display="inline">CL transitions nonmonotonically display="inline">x0 , magnetic fields redistribute pressure, amplifying Originality/value work’s novelty lies its holistic analysis ferrofluids an MHD-driven BFS flow, configuration unexplored studies. convection under transient conditions offers new into flow-thermal-stability tradeoffs. Practical value emerges from parametric optimizations (e.g. drag, -dependent vortex control) applicable cooling, targeted drug delivery systems. FEM framework also advances computational methods complex multiphysics flows.

Язык: Английский

Radiation effects on heat and mass transfer in porous media using Casson nanofluids: Fractional model with nanoparticles in vegetable oil DOI
Jamal Shah,

Mati Ur Rehman,

Ioan‐Lucian Popa

и другие.

Journal of Radiation Research and Applied Sciences, Год журнала: 2025, Номер 18(2), С. 101505 - 101505

Опубликована: Апрель 24, 2025

Язык: Английский

Процитировано

0
MHD double-diffusive convection of Casson fluid in a triangular enclosure with thermal radiation and chemical reactions DOI
Gandrakota Kathyayani,

Gattu Venkata Ramudu

Multiscale and Multidisciplinary Modeling Experiments and Design, Год журнала: 2025, Номер 8(6)

Опубликована: Май 6, 2025

Язык: Английский

Процитировано

0
Hydrodynamic and thermosolutal analysis of MHD ternary hybrid nanofluids in BFS configuration: high-order FEM for drag reduction and thermal enhancement DOI
Shafqat Hussain

International Journal of Numerical Methods for Heat &amp Fluid Flow, Год журнала: 2025, Номер unknown

Опубликована: Май 29, 2025

Purpose This study aims to numerically investigate the combined effects of thermosolutal convection, magnetohydrodynamics (MHD) and radiative heat transfer in a backward-facing step (BFS) channel filled with ternary hybrid ferrofluid suspension (Cu–Fe 3 O 4 –CoFe 2 /water) modeled as Casson fluid. The primary objective is analyze how key parameters, such Reynolds number ( Re ), Hartmann Ha Lewis Le ) obstacle positioning, influence hydrodynamic forces (drag lift coefficients), mass flow stability. provide actionable insights for optimizing thermal management systems, enhancing microfluidic device performance advancing biomedical applications involving nanofluids non-Newtonian fluids. Design/methodology/approach governing equations mass, momentum, energy solute transport are solved using high-order finite element method (FEM), nonlinearities addressed via Newton’s method. Time integration carried out nonstationary scheme based on backward differentiation formula (BDF). model accounts magnetohydrodynamic effects, radiation rheological behavior numerical implementation validated against experimental data benchmark solutions prior performing simulations. Findings Key results show that nanofluid enhances transfer, 1.03% increase Nusselt number, while fluid reduces drag stabilizes reattachment. Increasing enlarges recirculation zones but decreases coefficient CD by 95%. In contrast, higher increases 92% due Lorentz forces. Obstacle positioning significantly alters forces, minimal at display="inline">y0=0.7H maximum shear-induced display="inline">y0=1.3H . display="inline">CL transitions nonmonotonically display="inline">x0 , magnetic fields redistribute pressure, amplifying Originality/value work’s novelty lies its holistic analysis ferrofluids an MHD-driven BFS flow, configuration unexplored studies. convection under transient conditions offers new into flow-thermal-stability tradeoffs. Practical value emerges from parametric optimizations (e.g. drag, -dependent vortex control) applicable cooling, targeted drug delivery systems. FEM framework also advances computational methods complex multiphysics flows.

Язык: Английский

Процитировано

0