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대기 고도에 따른 입자 포집용 관성 임팩터의 설계 및 포집효율 예측Numerical Simulation of Impactor Collection Efficiency according to Altitude
- Other Titles
- Numerical Simulation of Impactor Collection Efficiency according to Altitude
- Issue Date
- Mar-2012
- Publisher
- 한국입자에어로졸학회
- Keywords
- Inertial impactor; Cut-off size; Collection efficiency; Stokes number; Altitude; Altitude
- Citation
- PARTICLE AND AEROSOL RESEARCH, v.8, no.1, pp 1 - 8
- Pages
- 8
- Indexed
- KCICANDI
- Journal Title
- PARTICLE AND AEROSOL RESEARCH
- Volume
- 8
- Number
- 1
- Start Page
- 1
- End Page
- 8
- ISSN
- 1738-8716
2287-8130
- 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 Marjamäki et al.(2000) at low pressure level. Based on the validation results, balloon‐borne impactors with the cut‐off sizes of 1 ㎛, 2.5 ㎛, and 10 ㎛ 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.
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