Dynamics, wakes, and regime transitions of a fixed angular particle in an unbounded inertial flow. II. From tetrahedron to sphere

G Gai, A Wachs - Physical Review Fluids, 2023 - APS
In this study, we investigate an unbounded Newtonian fluid flow past a stationary Platonic
polyhedron. To reveal the effects of the particle angularity and angular position on the flow …

On the streamwise vorticity generation and distribution in an angular particle wake

G Gai, A Wachs - Journal of Fluid Mechanics, 2023 - cambridge.org
We investigate the streamwise vorticity generation mechanism and distribution pattern in an
unbounded steady inertial flow past a fixed Platonic polyhedron. Three angular positions are …

[HTML][HTML] Flow past a random array of statistically homogeneously distributed stationary Platonic polyhedrons: Data analysis, Probability maps and Deep Learning …

A Goyal, G Gai, Z Cheng, JP Cunha, L Zhu… - International Journal of …, 2024 - Elsevier
We perform particle-resolved direct numerical simulations (PR-DNS) of the flow past a
random array of stationary Platonic polyhedrons seeded in a tri-periodic box at Reynolds …

On the dynamics and wakes of a freely settling Platonic polyhedron in a quiescent Newtonian fluid

G Gai, A Wachs - Journal of Fluid Mechanics, 2024 - cambridge.org
We investigate systematically the free settling of a single Platonic polyhedron in an
unbounded domain filled with an otherwise quiescent Newtonian fluid. We consider a …