The terminal velocity of sedimenting particles in a flowing fluid

• Type: Article in International Scientific Journal
• Date: 2008

Authors

Afonso, MM (Author) Other

Journal

Title: Journal of Physics A: Mathematical and Theoretical

Vol. 41

ISSN: 1751-8113

Publisher: Institute of Physics Publishing

Indexing

ISI Web of Knowledge - 12 Citations

Scopus - 17 Citations

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 15