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Titolo:
Transport of impurities in 2D incompressible periodic flows
Autore:
Paradisi, P; Tampieri, F;
Indirizzi:
Univ Bologna, Dipartimento Ingn Energet Nucl & Controllo Ambien, I-40136 Bologna, Italy Univ Bologna Bologna Italy I-40136 trollo Ambien, I-40136 Bologna, Italy ISAO, CNR, I-40129 Bologna, Italy ISAO Bologna Italy I-40129ISAO, CNR, I-40129 Bologna, Italy
Titolo Testata:
PHYSICS AND CHEMISTRY OF THE EARTH PART B-HYDROLOGY OCEANS AND ATMOSPHERE
fascicolo: 4, volume: 26, anno: 2001,
pagine: 287 - 291
SICI:
1464-1909(2001)26:4<287:TOII2I>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
FINITE REYNOLDS-NUMBER; PARTICLES; VELOCITY; MOTION; SPHERE; FORCE; BODY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
12
Recensione:
Indirizzi per estratti:
Indirizzo: Paradisi, P Univ Bologna, Dipartimento Ingn Energet Nucl & Controllo Ambien, Viale Risorgimento 2, I-40136 Bologna, Italy Univ Bologna Viale Risorgimento 2 Bologna Italy I-40136 Italy
Citazione:
P. Paradisi e F. Tampieri, "Transport of impurities in 2D incompressible periodic flows", PHYS CH P B, 26(4), 2001, pp. 287-291

Abstract

The investigation of the motion of finite size particles with density different from that of the fluid is relevant to the study of transport in geophysical flows. A two-dimensional model of an incompressible periodic flow isused in order to assess the role of the different forces acting on the impurity. The classic results (stability of the vortex centre for impurities lighter than the fluid; unstable motion for denser impurities) are reviewed. In the former case a typical convergence time scale towards the vortex centre is defined and studied as a function of the Stokes number St and the density ratio gamma. In the range of parameters under consideration it is observed that the Basset force acts as a (further) drag term modifying the convergence time without altering the qualitative features of the particle trajectory. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/01/20 alle ore 04:45:49