Particle and aerosol research (한국입자에어로졸학회지)

Korean Association for Particle and Aerosol Research (한국입자에어로졸학회)
권호 표지

Numerical Simulation of Impactor Collection Efficiency according to Altitude

대기 고도에 따른 입자 포집용 관성 임팩터의 설계 및 포집효율 예측

  • Kim, Gyuho (Department of Mechanical Engineering, Hanyang University) ;
  • Yook, Se-Jin (Department of Mechanical Engineering, Hanyang University) ;
  • Ahn, Kang-Ho (Department of Mechanical Engineering, Hanyang University)
  • Published : 2012.03.31
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Abstract

In this study, the collection efficiency of inertial impactors was numerically simulated by employing the statistical Lagrangian particle tracking(SLPT) model. The SLPT model was proven to be correct in predicting the impactor collection efficiency, when the numerically obtained collection efficiencies were compared with the experimental data of Marple et al.(1987) at normal pressure level and the experimental data of $Marjam{\ddot{a}}ki$ et al.(2000) at low pressure level. Based on the validation results, balloon-borne impactors with the cut-off sizes of $1{\mu}m$, $2.5{\mu}m$, and $10{\mu}m$ were designed. Then, the sampling flowrates of the inertial impactors, required to keep the cut-off sizes constant at different pressures and temperatures, were estimated according to the altitude.

Keywords

References

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