Abstract
When a raindrop with fixed radius falls downward in association with terminal velocity, a recirculation bubble always accompanies the gas-phase flow field in the aft region of the drop. With regard to drop internal flow structure, it is sensitive to the drop's size. When the drop radius is small (e.g. rs=200μm), only a single vortex motion is seen inside the drop. Under such a situation, sulfur dioxide absorbed from the interface is mainly transported from the area in front of the aft stagnation point. In contrast, as the drop is relatively large, say, rs=500μm, it is of interest to find that a two-vortex motion, composed of a primary and a secondary vortexes, appears. As a result, the onset of SO2 transport process occurs at the drop's surface near where the two vortexes meet. Accordingly, it is recognized that transient SO2 transport processes inside a raindrop is essentially affected by drop size.
| Original language | English |
|---|---|
| Title of host publication | Air Pollution IX |
| Editors | G. Latini, C.A. Brebbia, G. Latini, C.A. Brebbia |
| Pages | 629-638 |
| Number of pages | 10 |
| Publication status | Published - 2001 Dec 1 |
| Event | Ninth International Conference on Modelling, Monitoring and Management of Air Pollution: Air Pollution IX - Ancona, Italy Duration: 2001 Sep 12 → 2001 Sep 14 |
Publication series
| Name | Air Pollution IX |
|---|
Other
| Other | Ninth International Conference on Modelling, Monitoring and Management of Air Pollution: Air Pollution IX |
|---|---|
| Country | Italy |
| City | Ancona |
| Period | 01-09-12 → 01-09-14 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
Cite this
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Transient sulfur dioxide absorption inside a freely falling raindrop with terminal velocity. / Chen, Wei-Hsin.
Air Pollution IX. ed. / G. Latini; C.A. Brebbia; G. Latini; C.A. Brebbia. 2001. p. 629-638 (Air Pollution IX).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Transient sulfur dioxide absorption inside a freely falling raindrop with terminal velocity
AU - Chen, Wei-Hsin
PY - 2001/12/1
Y1 - 2001/12/1
N2 - When a raindrop with fixed radius falls downward in association with terminal velocity, a recirculation bubble always accompanies the gas-phase flow field in the aft region of the drop. With regard to drop internal flow structure, it is sensitive to the drop's size. When the drop radius is small (e.g. rs=200μm), only a single vortex motion is seen inside the drop. Under such a situation, sulfur dioxide absorbed from the interface is mainly transported from the area in front of the aft stagnation point. In contrast, as the drop is relatively large, say, rs=500μm, it is of interest to find that a two-vortex motion, composed of a primary and a secondary vortexes, appears. As a result, the onset of SO2 transport process occurs at the drop's surface near where the two vortexes meet. Accordingly, it is recognized that transient SO2 transport processes inside a raindrop is essentially affected by drop size.
AB - When a raindrop with fixed radius falls downward in association with terminal velocity, a recirculation bubble always accompanies the gas-phase flow field in the aft region of the drop. With regard to drop internal flow structure, it is sensitive to the drop's size. When the drop radius is small (e.g. rs=200μm), only a single vortex motion is seen inside the drop. Under such a situation, sulfur dioxide absorbed from the interface is mainly transported from the area in front of the aft stagnation point. In contrast, as the drop is relatively large, say, rs=500μm, it is of interest to find that a two-vortex motion, composed of a primary and a secondary vortexes, appears. As a result, the onset of SO2 transport process occurs at the drop's surface near where the two vortexes meet. Accordingly, it is recognized that transient SO2 transport processes inside a raindrop is essentially affected by drop size.
UR - http://www.scopus.com/inward/record.url?scp=0035791675&partnerID=8YFLogxK
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M3 - Conference contribution
SN - 1853128775
T3 - Air Pollution IX
SP - 629
EP - 638
BT - Air Pollution IX
A2 - Latini, G.
A2 - Brebbia, C.A.
A2 - Latini, G.
A2 - Brebbia, C.A.
ER -