Settling velocity of quasi-neutrally-buoyant inertial particles

• Tipo: Artigo em Revista Científica Internacional
• Data: 2018

Autores

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

Revista

Título: Comptes Rendus - Mecanique

Vol. 346

Páginas: 121-131

ISSN: 1631-0721

Editora: Academie des Sciences

Indexação

ISI Web of Knowledge - 2 Citações

Scopus - 2 Citações

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 11