Clustering Process and Interfacial Area Analysis in a Large-Size Dropshaft

Gualtieri, Carlo and Chanson, Hubert (2004). Clustering Process and Interfacial Area Analysis in a Large-Size Dropshaft. In: A. Mendes, M. Rahman and C. A. Brebbia, Advances in Fluid Mechanics V: Fifth International Conference On Advances In Fluid Mechanics. AFM 2004: Fifth International Conference on Advances in Fluid Mechanics, Lisbon, Portugal, (415-424). 22-24 March 2004.

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Author Gualtieri, Carlo
Chanson, Hubert
Title of paper Clustering Process and Interfacial Area Analysis in a Large-Size Dropshaft
Conference name AFM 2004: Fifth International Conference on Advances in Fluid Mechanics
Conference location Lisbon, Portugal
Conference dates 22-24 March 2004
Proceedings title Advances in Fluid Mechanics V: Fifth International Conference On Advances In Fluid Mechanics   Check publisher's open access policy
Journal name Advances in Fluid Mechanics V   Check publisher's open access policy
Place of Publication Southampton, U.K.
Publisher WIT Press
Publication Year 2004
Sub-type Fully published paper
Open Access Status File (Author Post-print)
ISBN 9781853127045
1853127043
ISSN 1353-808X
Editor A. Mendes
M. Rahman
C. A. Brebbia
Volume 40
Start page 415
End page 424
Total pages 10
Language eng
Abstract/Summary Dropshafts are commonly used in sewers and stormwater channels as energy dissipator systems. Since recent effort has been devoted to characterize dropshaft hydraulics and air-water flow properties, and the present paper develops an analysis of the bubble clustering process using new experimental data collected in a large-size facility. The results highlight some significant patterns in clusters production. Finally, interfacial areas for mass-transfer were measured.
Subjects 260502 Surfacewater Hydrology
291100 Environmental Engineering
290000 Engineering and Technology
290601 Chemical Engineering Design
290701 Mining Engineering
290802 Water and Sanitary Engineering
300105 Applied Hydrology (Drainage, Flooding, Irrigation, Quality, etc.)
260599 Hydrology not elsewhere classified
290800 Civil Engineering
290899 Civil Engineering not elsewhere classified
Keyword Dropshaft
Air bubble cluster
Air-water interface area
Air-water mass transfer
Water quality
References [1] Merlein, J., Kleinschroth, A. & Valentin, F., Systematisierung von Absturzbauwerken. Mitterilung No. 69, Lehrstuhls fur Hydrauli und Gewasserkunde, Technishen Universitat Munchen, Germany, 206 pages, 2002 [2] Apelt, C.J., Goonyella Railway Duplication Drop Structures and Energy Dissipators at Culvert Outlets. Model Studies. Report CH27/84, Dept. of Civil Engineering, University of Queensland, Australia, Feb., 10 pages, 11 figures & 37 plates, 1984 [3] Vischer, D. & Hager, W.H., Dam Hydraulics, John Wiley, Chichester, UK, 316 pages, 1998 [4] Chanson, H., An Experimental Study of Roman Dropshaft Hydraulics, Jl of Hyd. Res., IAHR, 40, No.1, pp.3-12, 2002 [5] Rajaratnam, N., Mainali, A. & Hsung, C.Y., Observations on Flow in Vertical Dropshafts in Urban Drainage Systems, Jl of Environmental Engrg., ASCE, 123, No.5, pp.486-491, 1997 [6] Chanson, H., The Hydraulics of Roman Aqueducts : Steep Chutes, Cascades and Dropshafts Research Report No. CE156, Dept. of Civil Engineering, University of Queensland, Australia, 97 pages, 1998 [7] Gualtieri C. & Chanson H., Analysis air bubbles probability distribution functions in a large-size dropshaft, submitted to 3rd International Symposium on Two-Phase Flow Modelling and Experimentation, Pisa (Italy), September 22-24, 2004 [8] Chanson H., A Study of Air Entrainment and Aeration Devices on a Spillway Model, Ph.D. thesis, Ref. 88-8, Dept. of Civil Engrg., University of Canterbury, New Zealand, 1988 [9] Chanson, H., Aoki, S. & Hoque, A., Similitude of Air Bubble Entrainment and Dispersion in Vertical Circular Plunging Jet Flows. An Experimental Study with Freshwater, Salty Freshwater and Seawater, Coastal/Ocean Engineering Report, No. COE02-1, Dept. of Architecture and Civil Eng., Toyohashi University of Technology, Japan, 94 pages, 2002 [10] Chanson H. & Brattberg T., Air-Water Bubbly Flow in Free-Shear Layers Proc.1996 ASME Fluids Eng. Conf., San Diego, USA, ASME-FED Vol. 236, Vol.1, pp. 357-364, 1996 [11] Chanson, H., An experimental study of roman dropshaft operation: hydraulics two-phase flow, acoustics, Research Report No. CE50/02, Dept. of Civil Engineering, University of Queensland, Australia, 2002 [12] Chanson H. & Toombes L., Air-water flows down stepped chutes: turbulence and flow structure observations, International Journal of Multiphase Flow, 28, pp.1737-1761, 2002 [13] Gualtieri C., Gualtieri P. & Pulci Doria G. Dimensional analysis of reaeration rate in streams, Journal of Environmental Engineering, ASCE, 128, n.1, January 2002, pp.12-18, 2002 [14] Chanson H., Measuring air-water interface area in supercritical open channel flow Water Research, 31, (6), pp.1414-1420, 1997 [15] Chanson H. & Brattberg T., Experimental Investigations of Air Bubble Entrainment in Developing Shear Layers, Report CH48/97, Dept. of Civil Engineering, University of Queensland, Australia, Oct., 309 pages, 1997
Q-Index Code E1

 
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