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Boundary layer effects on particle impaction and captureThe inertial impaction and deposition of small particles on larger bodies with viscous boundary layers are considered theoretically, in a detailed comment on a paper by Menguturk et al. (1983). Topics addressed include cushion effects, the dimensionless groups corresponding to the diameter range (3-6 microns) examined by Menguturk et al. in a numerical example, analogous effects of particle-gas energy and mass exchange in boundary layers, and the combined effects of particle inertia and diffusion. It is argued that the inertial effects can be characterized in terms of a body, boundary-layer, or sublayer Stokes number. In a reply by Menguturk et al., the focus is on the application of the theoretical model to the erosion of blade surfaces in large gas turbines; the Stokes number is found to be of limited practical value in these cases, because the particle motion is not primarily normal to the blade surfaces.
Document ID
19890031752
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Rosner, D. E.
(Yale Univ. New Haven, CT, United States)
Fernandez De La Mora, J.
(Yale University New Haven, CT, United States)
Date Acquired
August 14, 2013
Publication Date
March 1, 1984
Publication Information
Publication: ASME, Transactions, Journal of Fluids Engineering
Volume: 106
ISSN: 0098-2202
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
89A19123
Funding Number(s)
CONTRACT_GRANT: NAG3-201
CONTRACT_GRANT: F49620-82-K-0020
Distribution Limits
Public
Copyright
Other

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