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| Titel |
Measurements of dust deposition velocity in a wind-tunnel experiment |
| VerfasserIn |
J. Zhang, Y. Shao, N. Huang |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 14, no. 17 ; Nr. 14, no. 17 (2014-09-01), S.8869-8882 |
| Datensatznummer |
250118988
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| Publikation (Nr.) |
 copernicus.org/acp-14-8869-2014.pdf |
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| Zusammenfassung |
| In this study, we present the results of a wind-tunnel
experiment on dust deposition. A new method is proposed to derive dust
deposition velocity from PDA (particle dynamics analysis) particle-velocity
and particle-size measurements. This method has the advantage that the
motions of individual dust particles are directly observed and all relevant
data for computing dust deposition velocity is collected using a single
instrument, and thus the measurement uncertainties are reduced. The method
is used in the wind-tunnel experiment to measure dust deposition velocities
for different particle sizes, wind speeds and surface conditions. For
sticky-smooth wood and water surfaces, the observed dust deposition
velocities are compared with the predictions using a dust deposition scheme,
and the entire data set is compared with the data found in the literature.
From the wind-tunnel experiments, a relatively reliable data set of dust
deposition velocities is obtained, which is valuable for the development and
validation of dust deposition schemes. |
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