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Title: Numerical study of particle collection by single water droplets
Authors: Viswanathan, S. 
Issue Date: Nov-1999
Citation: Viswanathan, S. (1999-11). Numerical study of particle collection by single water droplets. Industrial and Engineering Chemistry Research 38 (11) : 4433-4442. ScholarBank@NUS Repository.
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 °C with saturated gas temperatures of 20, 35, 65, and 95 °C. The temperature, water vapor, and velocity distributions around the collector were determined by direct numerical integration of 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) ∞ Re-0.78; the flux deposition of fine particles on the rear of the collector is significant for low Reynolds numbers; wake capture is relatively insignificant; drop deformation can improve the collection of larger particles by inertial impaction and of smaller particles as a result of increased hydrodynamic effects on such particles.
Source Title: Industrial and Engineering Chemistry Research
ISSN: 08885885
Appears in Collections:Staff Publications

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