Fluid turbulence is commonly associated with stronger drag, greater heat transfer, and more
efficient mixing than in laminar flows. In many natural and industrial settings, turbulent liquid …

Path instabilities of a sphere rising or falling in a quiescent Newtonian fluid have been
studied experimentally. The rich palette of possible instabilities is dependent upon two …

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 …

We experimentally investigate the effect of geometrical anisotropy for buoyant spheroidal
particles rising in a still fluid. All other parameters, such as the Galileo number (the ratio of …

The wake flow past a streamwise rotating sphere is a canonical model of numerous
applications, such as particle-driven flows, sport aerodynamics and freely rising or falling …

Abstract Particle-resolved Direct Numerical Simulations have been performed on the
gravitational settling of mono-disperse solid spheres in a viscous fluid and triply periodic …

We investigated experimentally the motion of elongated finite-length cylinders (length $ L $,
diameter $ d $) freely falling under the effect of buoyancy in a low-viscosity fluid otherwise at …

Stratification due to salt or heat gradients greatly affects the distribution of inert particles and
living organisms in the ocean and the lower atmosphere. Laboratory studies considering the …

The three-dimensional flow around a spherical clean bubble translating steadily in a wall-
bounded linear shear flow is studied numerically. The present work is concerned with the …

The effects of porosity on the kinematics of porous disks are investigated experimentally. A
new falling motion is identified, namely, spiral irregular motion, which is characterized by the …