DOI: 10.1016/j.atmosenv.2014.08.062
Scopus记录号: 2-s2.0-84907073249
论文题名: Wind tunnel study of twelve dust samples by large particle size
作者: Shannak B ; , Corsmeier U ; , Kottmeier C ; , Al-azab T
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 98 起始页码: 442
结束页码: 453
语种: 英语
英文关键词: Aerosol
; Collection efficiency
; Dust
; Sampler
; Sand
Scopus关键词: Dust
; Sand
; Collection efficiency
; Dust samples
; Large particle sizes
; Sampler
; Aerosols
; glass fiber
; aerosol
; airflow
; data set
; dust
; fluid dynamics
; geological survey
; particle size
; sphere
; suspended sediment
; wind tunnel
; wind velocity
; air pollution
; air sampler
; air sampling
; air temperature
; Article
; big spring number eight
; british standard directional dust gauge
; Cayenne pepper
; controlled study
; cox sand catcher
; dust
; fly ash
; geometry
; grain dust
; inverted frisbee sampler
; measurement
; model series number 680
; modified wilson and cooke
; particle resuspension
; particle size
; pollen
; pollet catcher
; sand
; suspended sediment trap
; textile
; wedge dust flux gauge
; wind
; wind tunnel
; United States
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Due to the lack of data by large dust and sand particle, the fluid dynamics characteristics, hence the collection efficiencies of different twelve dust samplers have been experimentally investigated. Wind tunnel tests were carried out at wind velocities ranging from 1 up to 5.5 ms-1. As a large solid particle of 0.5 and 1 mm in diameter, Polystyrene pellets called STYRO Beads or polystyrene sphere were used instead of sand or dust. The results demonstrate that the collection efficiency is relatively acceptable only of eight tested sampler and lie between 60 and 80% depending on the wind velocity and particle size. These samplers are: the Cox Sand Catcher (CSC), the British Standard Directional Dust Gauge (BSD), the Big Spring Number Eight (BSNE), the Suspended Sediment Trap (SUSTRA), the Modified Wilson and Cooke (MWAC), the Wedge Dust Flux Gauge (WDFG), the Model Series Number 680 (SIERRA) and the Pollet Catcher (POLCA). Generally they can be slightly recommended as suitable dust samplers but with collecting error of 20 up to 40%. However the BSNE verify the best performance with a catching error of about 20% and can be with caution selected as a suitable dust sampler. Quite the contrary, the other four tested samplers which are the Marble Dust Collector (MDCO), the United States Geological Survey (USGS), the Inverted Frisbee Sampler (IFS) and the Inverted Frisbee Shaped Collecting Bowl (IFSCB) cannot be recommended due to their very low collection efficiency of 5 up to 40%. In total the efficiency of sampler may be below 0.5, depending on the frictional losses (caused by the sampler geometry) in the fluid and the particle's motion, and on the intensity of airflow acceleration near the sampler inlet. Therefore, the literature data of dust are defective and insufficient. To avoid false collecting data and hence inaccurate mass flux modeling, the geometry of the dust sampler should be considered and furthermore improved. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80629
Appears in Collections: 气候变化事实与影响
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作者单位: Al-Balqa' Applied University (BAU), Al-Huson University College, Mechanical Engineering Department, P.O.Box 50, Al-Huson, Jordan; Institute for Meteorology and Climate Research - Troposphere Research, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, Germany
Recommended Citation:
Shannak B,, Corsmeier U,, Kottmeier C,et al. Wind tunnel study of twelve dust samples by large particle size[J]. Atmospheric Environment,2014-01-01,98