Stokes drift for inertial particles transported by water waves

• Type: Article in International Scientific Journal
• Date: 2013

Authors

Santamaria, F (Author) Other; Boffetta, G (Author) Other; Afonso, MM (Author) Other; Mazzino, A (Author) Other; Onorato, M (Author) Other; Pugliese, D (Author) Other

Journal

Title: Europhysics Letters

Vol. 102

ISSN: 0295-5075

Publisher: Institute of Physics Publishing

Indexing

ISI Web of Knowledge - 15 Citations

Scopus - 28 Citations

Other information

Authenticus ID: P-00N-NMB

DOI: 10.1209/0295-5075/102/14003

Abstract (EN): We study the effect of surface gravity waves on the motion of inertial particles in an incompressible fluid. We perform analytical calculations based on perturbation expansions which allow us to predict the dynamics of inertial particles in the deep-water regime. We find that the presence of inertia leads to a non-negligible correction to the well-known horizontal Stokes drift velocity. Moreover, we find that the vertical sedimentation velocity is also affected by a drift induced by waves. The latter result may have some relevant consequences on the rate of sedimentation of particles of finite size. We underline that the vertical drift would also be observed in the (hypothetical) absence of the gravitational force. Kinematic numerical simulations are performed and the results are found to he in excellent agreement with the analytical predictions, even for values of the parameters beyond the perturbative limit. Copyright (C) EPLA, 2013

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5