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Titolo:
Numerical study of particle collection by single water droplets
Autore:
Viswanathan, S;
Indirizzi:
Natl Univ Singapore, Dept Environm Chem & Engn, Singapore 119260, Singapore Natl Univ Singapore Singapore Singapore 119260 ngapore 119260, Singapore
Titolo Testata:
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
fascicolo: 11, volume: 38, anno: 1999,
pagine: 4433 - 4442
SICI:
0888-5885(199911)38:11<4433:NSOPCB>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
DROPS; CLOUD; SHAPE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
31
Recensione:
Indirizzi per estratti:
Indirizzo: Viswanathan, S Natl Univ Singapore, Dept Environm Chem & Engn, 10 Kent Ridge Crescent, Singapore 119260, Singapore Natl Univ Singapore 10 Kent Ridge Crescent Singapore Singapore 119260
Citazione:
S. Viswanathan, "Numerical study of particle collection by single water droplets", IND ENG RES, 38(11), 1999, pp. 4433-4442

Abstract

Particle collection efficiencies of water droplets were calculated by considering thermophoresis, diffusiophoresis, inertial impaction, wake capture,and effects of drop deformation. The computations were carried out for a droplet temperature of 10 degrees C with saturated gas temperatures of 20, 35, 65, and 95 degrees C. The temperature, water vapor, and velocity distributions around the collector were determined by direct numerical integrationof the appropriate governing partial differential equations using a convenient orthogonal grid generation technique. The investigation shows the following: deposition of fine particles can be significantly enhanced by phoretic forces; flux deposition of fine particles can be related to Reynolds number through the proportionality, E-flux proportional to Re-0.78; the flux deposition of fine particles on the rear of the collector is significant forlow Reynolds numbers; wake capture is relatively insignificant; drop deformation can improve the collection of larger particles by inertial impactionand of smaller particles as a result of increased hydrodynamic effects on such particles.

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Documento generato il 01/04/20 alle ore 19:51:43