Bubbly Flow Structure in Hydraulic Jump

Chanson, Hubert (2007) Bubbly Flow Structure in Hydraulic Jump. European Journal of Mechanics B, Fluids, 26 3: 367-384. doi:10.1016/j.euromechflu.2006.08.001

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads
ejmbf_07.pdf Published article application/pdf 1.58MB 1394

Author Chanson, Hubert
Title Bubbly Flow Structure in Hydraulic Jump
Journal name European Journal of Mechanics B, Fluids   Check publisher's open access policy
ISSN 0997-7546
Publication date 2007-05
Year available 2007
Sub-type Article (original research)
DOI 10.1016/j.euromechflu.2006.08.001
Open Access Status File (Author Post-print)
Volume 26
Issue 3
Start page 367
End page 384
Total pages 18
Place of publication Paris
Publisher Gauthier-villars/editions Elsevier
Collection year 2008
Language eng
Subject 240000 Physical Sciences
240500 Classical Physics
240502 Fluid Physics
260000 Earth Sciences
260500 Hydrology
260502 Surfacewater Hydrology
290000 Engineering and Technology
290600 Chemical Engineering
290601 Chemical Engineering Design
290800 Civil Engineering
290802 Water and Sanitary Engineering
291100 Environmental Engineering
291101 Environmental Engineering Modelling
291800 Interdisciplinary Engineering
291803 Turbulent Flows
300000 Agricultural, Veterinary and Environmental Sciences
300100 Soil and Water Sciences
300105 Applied Hydrology (Drainage, Flooding, Irrigation, Quality, etc.)
770400 Coastal and Estuarine Environment
Abstract In an open channel, a hydraulic jump is the rapid transition from super- to sub-critical flow associated with strong turbulence and air bubble entrainment in the mixing layer. New experiments were performed at relatively large Reynolds numbers using phase-detection probes. Some new signal analysis provided characteristic air-water time and length scales of the vortical structures advecting the air bubbles in the developing shear flow. An analysis of the longitudinal air-water flow structure suggested little bubble clustering in the mixing layer, although an interparticle arrival time analysis showed some preferential bubble clustering for small bubbles with chord times below 3 ms. Correlation analyses yielded longitudinal air-water time scales Txx*V1/d1 of about 0.8 in average. The transverse integral length scale Z/d1 of the eddies advecting entrained bubbles was typically between 0.25 and 0.4, irrespective of the inflow conditions within the range of the investigations. Overall the findings highlighted the complicated nature of the air-water flow
Keyword Hydraulic Jumps
Bubbly Flow Structures
Integral Time Scales
Transverse Length Scales
Bubble Chord Time Distributions
Interparticle Arrival Time
Air Bubble Entrainment
Physics, Fluids & Plasmas
Air Entrainment
Plunging Jets
References BRATTBERG, T., CHANSON, H., and TOOMBES, L. (1998). "Experimental Investigations of Free-Surface Aeration in the Developing Flow of Two-Dimensional Water Jets." Jl of Fluids Eng., Trans. ASME, Vol. 120, No. 4, pp. 738-744. BROCCHINI, M., and PEREGRINE, D.H. (2001). "The Dynamics of Strong Turbulence at Free Surfaces. Part 2. Free-surface Boundary Conditions." Jl Fluid Mech., Vol. 449, pp. 255-290. CHANSON, H. (1989). "Study of Air Entrainment and Aeration Devices." Jl of Hyd. Res., IAHR, Vol. 27, No. 3, pp. 301-319. CHANSON, H. (1995). "Air Entrainment in Two-dimensional Turbulent Shear Flows with Partially Developed Inflow Conditions." Intl Jl of Multiphase Flow, Vol. 21, No. 6, pp. 1107-1121. CHANSON, H. (1997). "Air Bubble Entrainment in Free-Surface Turbulent Shear Flows." Academic Press, London, UK, 401 pages. CHANSON, H. (2006). "Air Bubble Entrainment in Hydraulic Jumps. Similitude and Scale Effects." Report No. CH57/05, Dept. of Civil Engineering, The University of Queensland, Brisbane, Australia, Jan., 119 pages. CHANSON, H., AOKI, S., and HOQUE, A. (2004). "Physical Modelling and Similitude of Air Bubble Entrainment at Vertical Circular Plunging Jets." Chemical Engineering Science, Vol. 59, No. 4, pp. 747-754. CHANSON, H., and BRATTBERG, T. (2000). "Experimental Study of the Air-Water Shear Flow in a Hydraulic Jump." Intl Jl of Multiphase Flow, Vol. 26, No. 4, pp. 583-607. CHANSON, H., and TOOMBES, L. (2002). "Air-Water Flows down Stepped chutes : Turbulence and Flow Structure Observations." Intl Jl of Multiphase Flow, Vol. 28, No. 11, pp. 1737-1761. COMOLET, R. (1979). "Sur le Mouvement d'une bulle de gaz dans un liquide." ('Gas Bubble Motion in a Liquid Medium.') Jl La Houille Blanche, No. 1, pp. 31-42 (in French). CUMMINGS, P.D., and CHANSON, H. (1997). "Air Entrainment in the Developing Flow Region of Plunging Jets. Part 1 Theoretical Development." Jl of Fluids Eng., Trans. ASME, Vol. 119, No. 3, pp. 597-602. EDWARDS, C.F., and MARX, K.D. (1995a). "Multipoint Statistical Structure of the Ideal Spray, Part I: Fundamental Concepts and the Realization Density." Atomizati & Sprays, Vol. 5, pp. 435-455. EDWARDS, C.F., and MARX, K.D. (1995b). "Multipoint Statistical Structure of the Ideal Spray, Part II: Evaluating Steadiness using the Interparticle Time Distribution." Atomizati & Sprays, Vol. 5, pp. 435-455. HEINLEIN, J., and FRITSCHING, U. (2006). "Droplet Clustering in Sprays." Experiments in Fluids, Vol. 40, No. 3, pp. 464-472. HERRINGE, R.A., and DAVIS, M.R. (1974). "Detection of Instantaneous Phase Changes in Gas-Liquid Mixtures." Jl. of Physics E: Scientific Instruments, Vol. 7, pp. 807-812. HOYT, J.W., and SELLIN, R.H.J. (1989). "Hydraulic Jump as 'Mixing Layer'." Jl of Hyd. Engrg., ASCE, Vol. 115, No. 12, pp. 1607-1614. LUONG, J.T.K., and SOJKA, P.E. (1999). "Unsteadiness in Effervescent Sprays." Atomization & Sprays, Vol. 9, pp. 87-109. MOSSA, M., and TOLVE, U. (1998). "Flow Visualization in Bubbly Two-Phase Hydraulic Jump." Jl Fluids Eng., ASME, Vol. 120, March, pp. 160-165. MOUAZE, D., MURZYN, F., and CHAPLIN, J.R. (2005). "Free Surface Length Scale Estimation in Hydraulic Jumps." Jl of Fluids Eng., Trans. ASME, Vol. 127, pp. 1191-1193. MURZYN, F., MOUAZE, D., and CHAPLIN, J.R. (2005). "Optical Fibre Probe Measurements of Bubbly Flow in Hydraulic Jumps" Intl Jl of Multiphase Flow, Vol. 31, No. 1, pp. 141-154. NOYMER, P.D. (2000). "The Use of Single-Point Measurements to Characterise Dynamic Behaviours in Spray." Experiments in Fluids, Vol. 29, pp. 228-237. RAJARATNAM, N. (1962). "An Experimental Study of Air Entrainment Characteristics of the Hydraulic Jump." Jl of Instn. Eng. India, Vol. 42, No. 7, March, pp. 247-273. RESCH, F.J., and LEUTHEUSSER, H.J. (1972). "Le Ressaut Hydraulique : mesure de Turbulence dans la RĂ©gion Diphasique." ('The Hydraulic Jump : Turbulence Measurements in the Two-Phase Flow Region.') Jl La Houille Blanche, No. 4, pp. 279-293 (in French). SARPKAYA, T. (1996). "Vorticity, Free Surface and Surfactants." Ann Rev. Fluid Mech., Vol. 28, pp. 83-128. THANDAVESWARA, B.S. (1974). "Self Aerated Flow Characteristics in Developing Zones and in Hydraulic Jumps." Ph.D. thesis, Dept. of Civil Engrg., Indian Institute of Science, Bangalore, India, 399 pages. TOOMBES, L. (2002). "Experimental Study of Air-Water Flow Properties on Low-Gradient Stepped Cascades." Ph.D. thesis, Dept of Civil Engineering, The University of Queensland.
Q-Index Code C1
Additional Notes This is an author version of an article originally published as CHANSON, H. (2007). "Bubbly Flow Structure in Hydraulic Jump." European Journal of Mechanics B/Fluids, Vol. 26, iss. 3 pp.367-384 doi: 10.1016/j.euromechflu.2006.08.001 (ISSN 0997-7546). Copyright 2007 Elsevier. All rights reserved. Single copies only may be downloaded and printed for a user's personal research and study.

Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 37 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 0 times in Scopus Article
Google Scholar Search Google Scholar
Access Statistics: 1304 Abstract Views, 1391 File Downloads  -  Detailed Statistics
Created: Thu, 01 Mar 2007, 23:39:35 EST by Hubert Chanson on behalf of School of Engineering