The present work presents an experimental study on a free-falling rigid sphere in a
quiescent incompressible newtonian fluid, placed in an oscillating frame. The goal of this …

This paper reports an experimental investigation of isolated fluid particles rising (or falling) in
a quiescent viscous liquid placed in an oscillating frame. Our goal is to carry out the first …

A direct numerical simulation, based on spectral methods, has been used to compute the
time-dependent, axisymmetric viscous flow past a rigid sphere. An investigation has been …

In a recent paper by Lawrence & Weinbaum (1986) an unexpected new behaviour was
discovered for a nearly spherical body executing harmonic oscillations in unsteady Stokes …

In this paper, we study the effect of the Reynolds number (Re) on the dynamics and vortex
formation modes of spheres rising or falling freely through a fluid (where Re= 100–15000) …

The unsteady force acting on a sphere that is held fixed in a steady uniform flow with small-
amplitude oscillations is evaluated to O (Re) for small Reynolds number Re. Good …

The correction to the torque on a torsionally oscillating sphere in a viscous fluid due to the
induced secondary flow is calculated when the thickness of the shear layer is small …

Unsteady flow due to an oscillating sphere with a velocity U0cosωt', in which U0 and ω are
the amplitude and frequency of the oscillation and t'is time, is investigated at finite Reynolds …

The validity of potential flow and Stokes viscous flow theory was investigated experimentally
to determine the effect of a real fluid on an oscillating rigid sphere bounded by a concentric …

Unsteady flow over a stationary sphere with a small fluctuation in the free-stream velocity is
considered at small Reynolds number, Re. A matched asymptotic solution is obtained for the …