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Efficiency of transient contaminant removal from a slot ventilated enclosure

Publication ,  Journal Article
Lage, JL; Bejan, A; Anderson, R
Published in: International Journal of Heat and Mass Transfer
January 1, 1991

This paper reports the results of a fundamental study of the transient removal of a contaminant from a two-dimensional enclosure with one inlet and one outlet. The evolution of the flow and concentration fields are simulated numerically using Jones and Launder's low Reynolds number k-ε model. The Reynolds number is varied over the range 5-5000, where Re is based on the jet inlet width. The effectiveness of this forced convection mass transfer process is documented quantitatively in terms of a ventilation efficiency and a critical concentration decay time. The relationship between these quantitative performance parameters, the Reynolds number and the ventilation jet orientation, is reported. It is shown that significant gains in ventilation efficiency (or a shortening of the critical concentration decay time) can be made by properly orienting and positioning the inlet and outlet ports relative to each other and to the enclosure. The numerical ventilation efficiency results are summarized by a compact analytical expression based on a theoretical two-zone model of the enclosure flow. © 1991.

Duke Scholars

Published In

International Journal of Heat and Mass Transfer

DOI

ISSN

0017-9310

Publication Date

January 1, 1991

Volume

34

Issue

10

Start / End Page

2603 / 2615

Related Subject Headings

  • Mechanical Engineering & Transports
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

Citation

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Lage, J. L., Bejan, A., & Anderson, R. (1991). Efficiency of transient contaminant removal from a slot ventilated enclosure. International Journal of Heat and Mass Transfer, 34(10), 2603–2615. https://doi.org/10.1016/0017-9310(91)90100-S
Lage, J. L., A. Bejan, and R. Anderson. “Efficiency of transient contaminant removal from a slot ventilated enclosure.” International Journal of Heat and Mass Transfer 34, no. 10 (January 1, 1991): 2603–15. https://doi.org/10.1016/0017-9310(91)90100-S.
Lage JL, Bejan A, Anderson R. Efficiency of transient contaminant removal from a slot ventilated enclosure. International Journal of Heat and Mass Transfer. 1991 Jan 1;34(10):2603–15.
Lage, J. L., et al. “Efficiency of transient contaminant removal from a slot ventilated enclosure.” International Journal of Heat and Mass Transfer, vol. 34, no. 10, Jan. 1991, pp. 2603–15. Scopus, doi:10.1016/0017-9310(91)90100-S.
Lage JL, Bejan A, Anderson R. Efficiency of transient contaminant removal from a slot ventilated enclosure. International Journal of Heat and Mass Transfer. 1991 Jan 1;34(10):2603–2615.
Journal cover image

Published In

International Journal of Heat and Mass Transfer

DOI

ISSN

0017-9310

Publication Date

January 1, 1991

Volume

34

Issue

10

Start / End Page

2603 / 2615

Related Subject Headings

  • Mechanical Engineering & Transports
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences