The terminal velocity of sedimenting particles in a flowing fluid

• Tipo: Artigo em Revista Científica Internacional
• Data: 2008

Autores

Afonso, MM (Autor) Outra

Revista

Título: Journal of Physics A: Mathematical and Theoretical

Vol. 41

ISSN: 1751-8113

Editora: Institute of Physics Publishing

Indexação

ISI Web of Knowledge - 12 Citações

Scopus - 17 Citações

Outras Informações

ID Authenticus: P-00N-NM7

DOI: 10.1088/1751-8113/41/38/385501

Abstract (EN): The influence of an underlying carrier flow on the terminal velocity of sedimenting particles is investigated both analytically and numerically. Our theoretical framework works for a general class of (laminar or turbulent) velocity fields and, by means of an ordinary perturbation expansion at small Stokes number, leads to closed partial differential equations (PDE) whose solutions contain all relevant information on the sedimentation process. The set of PDE is solved by means of direct numerical simulations for a class of 2D cellular flows (static and time dependent) and the resulting phenomenology is analysed and discussed.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 15