Effect of shear-thinning rheology on the dynamics and pressure distribution of a single rigid ellipsoidal particle in viscous fluid flow DOI
Aigbe Awenlimobor, Douglas E. Smith

Physics of Fluids, Год журнала: 2024, Номер 36(12)

Опубликована: Дек. 1, 2024

This paper evaluates the behavior of a single rigid ellipsoidal particle suspended in homogenous viscous flow with power-law Generalized Newtonian Fluid (GNF) rheology using custom-built finite element analysis (FEA) simulation. The combined effects shear-thinning fluid rheology, aspect ratio, initial orientation and shear-extensional rate factor various regimes on particle's dynamics surface pressure evolution are investigated. was found to modify trajectory alter kinematic response. Moreover, distribution over is significantly reduced by rheology. FEA model validated comparing results case obtained from well-known Jefferys analytical model. Furthermore, extended define special class flows extension shear components typically axisymmetric nozzle contractions. findings provide an improved understanding key transport phenomenon related physical processes involving fluid-structure interaction (FSI) such as that which occurs within flow-field developed during material extrusion-deposition additive manufacturing fiber reinforced polymeric composites. These insight into important microstructural formations print beads.

Язык: Английский

Effect of angle optimization on particle inertial focusing with asymmetrically curved channels DOI
Moli Zhao,

Xiaoyu Qin,

Qiao Li

и другие.

Physics of Fluids, Год журнала: 2025, Номер 37(2)

Опубликована: Фев. 1, 2025

This study examines the impact of angle optimization on particle inertial focusing within a fluid flow system through numerical simulations. The investigation employs asymmetrically curved channels characterized by circular walls and angled straight walls. Various radii curvature for arc different angles are selected to achieve optimized channel designs analyze trajectories in both power-law Newtonian fluids. takes into account several parameters, including width at baffle (dw), index (n), Reynolds number (Re), radius (R) wall. findings indicate that an increase dw results shift from single-sided double-sided channel. Furthermore, this transition between two states can be facilitated increasing number, which leads double-point equilibrium position single-point position. In case shear-thinning fluids, becomes unstable, resulting completely unfocused state as increases. contrast, shear-thickening fluids exhibit stable positions move away centerline with dw. optimal performance minimal loss rate achieved when R is set 900 μm.

Язык: Английский

Процитировано

0

Effect of shear-thinning rheology on the dynamics and pressure distribution of a single rigid ellipsoidal particle in viscous fluid flow DOI
Aigbe Awenlimobor, Douglas E. Smith

Physics of Fluids, Год журнала: 2024, Номер 36(12)

Опубликована: Дек. 1, 2024

This paper evaluates the behavior of a single rigid ellipsoidal particle suspended in homogenous viscous flow with power-law Generalized Newtonian Fluid (GNF) rheology using custom-built finite element analysis (FEA) simulation. The combined effects shear-thinning fluid rheology, aspect ratio, initial orientation and shear-extensional rate factor various regimes on particle's dynamics surface pressure evolution are investigated. was found to modify trajectory alter kinematic response. Moreover, distribution over is significantly reduced by rheology. FEA model validated comparing results case obtained from well-known Jefferys analytical model. Furthermore, extended define special class flows extension shear components typically axisymmetric nozzle contractions. findings provide an improved understanding key transport phenomenon related physical processes involving fluid-structure interaction (FSI) such as that which occurs within flow-field developed during material extrusion-deposition additive manufacturing fiber reinforced polymeric composites. These insight into important microstructural formations print beads.

Язык: Английский

Процитировано

0