Settling velocity of quasi-neutrally-buoyant inertial particles

• Type: Article in International Scientific Journal
• Date: 2018

Authors

Marco Martins Afonso (Author) FCUP; Sílvio Gama (Author) FCUP

Journal

Title: Comptes Rendus - Mecanique

Vol. 346

Pages: 121-131

ISSN: 1631-0721

Publisher: Academie des Sciences

Indexing

ISI Web of Knowledge - 2 Citations

Scopus - 2 Citations

Other information

Authenticus ID: P-00N-G7Q

DOI: 10.1016/j.crme.2017.11.005

Abstract (EN): 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-diffusion-reaction type, which can be solved at least numerically, since our scheme implies a huge reduction of the problem dimensionality from the full phase space to the classical physical space.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 11