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Droplet Deposition from a Mist Flow on a Parallel Vertical Wall
Author(s) -
Issapour I.,
Lee S. L.
Publication year - 1990
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.19900070113
Subject(s) - turbulence , mist , mechanics , suspension (topology) , flow (mathematics) , two phase flow , deposition (geology) , particle (ecology) , materials science , particle deposition , mean flow , physics , optics , meteorology , geology , mathematics , paleontology , oceanography , homotopy , sediment , pure mathematics
A primarily experimental investigation of the deposition of droplets from a turbulent two‐phase suspension flow on a parallel vertical wall has been found to be closely related to the ratio of fluctuation velocity of the droplets to that of the flow and the size of the droplets. Data are obtained for an air‐water mist flow parallel to a vertical flat plat at R e = 1.54 × 10 5 to 4.2 × 10 5 by the use of a particle‐sizing two‐dimensional reference‐mode laser‐Doppler anemometry technique. Although no rigorous theory can be formulated at present due to the complexities involved, however, an analytical attempt is made in the hope of providing an explanation to the physics of the phenomenon. It is based on an apparent turbulent viscosity of the fluid as felt by the moving particles in a turbulent two‐phase suspension flow and the most energetic eddy frequency of the flow.