2017
DOI: 10.1016/j.crme.2017.11.005
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Settling velocity of quasi-neutrally-buoyant inertial particles

Abstract: We investigate the sedimentation properties of quasi-neutrally buoyant inertial particles carried by incompressible zero-mean fluid flows. We obtain generic formulae for the terminal velocity in generic space-and-time periodic (or steady) flows, along with further information for flows endowed with some degree of spatial symmetry such as odd parity in the vertical direction. These expressions consist in space-time integrals of auxiliary quantities that satisfy partial differential equations of the advection-di… Show more

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Cited by 2 publications
(1 citation statement)
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“…The expansion parameter is the departure from the limit of neutrally-buoyant particles, in term of which small-scale co-velocity and position dynamics will be resolved on the same footing. As we will see in detail, the main advantage of our expansion is that small-scale degrees of freedom can be treated by means of a regular perturbation theory rather than by a secondary multi-scale expansion as it happens for the usual over-damped expansion [31].…”
Section: Introductionmentioning
confidence: 99%
“…The expansion parameter is the departure from the limit of neutrally-buoyant particles, in term of which small-scale co-velocity and position dynamics will be resolved on the same footing. As we will see in detail, the main advantage of our expansion is that small-scale degrees of freedom can be treated by means of a regular perturbation theory rather than by a secondary multi-scale expansion as it happens for the usual over-damped expansion [31].…”
Section: Introductionmentioning
confidence: 99%