Elsevier

Journal of Aerosol Science

Volume 26, Issue 6, September 1995, Pages 933-944
Journal of Aerosol Science

Regular paper
Aspiration efficiency of a thin-walled shallow-tapered sampler rear-facing the wind

https://doi.org/10.1016/0021-8502(95)00028-BGet rights and content

Abstract

The aspiration efficiency of a thin-walled, shallow-tapered aerosol sampler, as studied by Vincent et al. (1986, J. Aerosol Sci. 17, 211–224), which is rear-facing the wind is numerically investigated. The turbulent fluid flow is predicted by employing the control volume, finite-difference method with a body-fitted coordinate system and a low Reynolds number k-ϵ turbulence model. The particle trajectories are calculated by integrating the particle equations of motion using either the turbulent instantaneous fluid velocity (a stochastic model) or the mean fluid motion (the mean motion model). The aspiration efficiency for thin-walled, shallow-tapered samplers which rear-face the wind as predicted by the two models, are in good agreement and although the results show an unusual behaviour they agree reasonably well with all the available experimental data.

References (25)

  • V. Vitols

    Theoretical limits of errors due to anisokinetic sampling of particulate matter

    J. Air Pollut. Control Assoc.

    (1966)
  • S. Badzioch

    Collection of gas-borne dust particles by means of an aspirated sampling nozzle

    Br. J. appl. Phys.

    (1959)
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