U.S. flag An official website of the United States government.
Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

i

Deposition from charged aerosol flows through a two-dimensional bend



Details

  • Personal Author:
  • Description:
    An analysis was presented on the deposition of a monodisperse aerosol which has a uniform electric charge per particle as the aerosol flows through a bend. The case of a two dimensional bend was considered to simplify the analysis. In a two dimensional channel, secondary flows do not occur as the paths the fluid particles would have to follow in order to reach the inside wall would be infinitely long. The velocity field used in the paper was an ideal one. The entrance effect was neglected and the velocity was assumed to vary linearly with the distance from the center of curvature of the channel. Mathematical equations for the determination of collection efficiency were presented. In order to compare the results of the analysis with experimental data obtained from a lung cast, an aerosol with 1 micrometer aerodynamic diameter and 300 electronic charges per particle flowing through a 90 degree bend of 1 centimeter width was considered. Collection efficiencies were calculated and showed that the particle charge effect was insignificant for Stokes number greater than 0.02. This was in agreement with experimental findings. At a given Stokes number, the calculated efficiency was considerably lower than the measured value because the two dimensional bend was used in the analysis. The dependence of collection efficiency on particle charge, however, showed a pattern similar to that observed by experiment. [Description provided by NIOSH]
  • Subjects:
  • Keywords:
  • ISSN:
    0021-8502
  • Document Type:
    Text
  • Funding:
    Grant
  • Genre:
    Journal Article
  • Place as Subject:
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Pages in Document:
    391-395
  • Volume:
    11
  • Issue:
    1
  • NIOSHTIC Number:
    nn:00185868
  • Citation:
    J Aerosol Sci 1980 Jan; 11(1):391-395
  • Contact Point Address:
    Engineering Science S U N Y - at Buffalo Dept of Engineering Science Buffalo, N Y 14214
  • Federal Fiscal Year:
    1980
  • Performing Organization:
    State University of New York at Buffalo, Buffalo, New York
  • Peer Reviewed:
    True
  • Start Date:
    19791201
  • Source Full Name:
    Journal of Aerosol Science
  • End Date:
    19861130
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:69b19794ee7e6b20ce38816f0fcd0ef64fcc4432d4219ba910c794774f63f539a0df35cda92211e925c6be8e6b34a9e21b5222762362fe561b2f5ce60f0f9cdb
  • Download URL:
  • File Type:
    Filetype[PDF - 235.17 KB ]
PREVIOUS
ON THIS PAGE
Details
CDC STACKS serves as an archival repository of CDC-published products including scientific findings, journal articles, guidelines, recommendations, or other public health information authored or co-authored by CDC or funded partners.

As a repository, CDC STACKS retains documents in their original published format to ensure public access to scientific information.
BACK TO TOP