Volume 16 Issue 4
Dec.  2023
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Farhad Bahmanpouri, Carlo Gualtieri, Hubert Chanson. 2023: Experiments on two-phase flow in hydraulic jump on pebbled rough bed: Part 1–Turbulence properties and particle chord time and length. Water Science and Engineering, 16(4): 359-368. doi: 10.1016/j.wse.2023.05.002
Citation: Farhad Bahmanpouri, Carlo Gualtieri, Hubert Chanson. 2023: Experiments on two-phase flow in hydraulic jump on pebbled rough bed: Part 1–Turbulence properties and particle chord time and length. Water Science and Engineering, 16(4): 359-368. doi: 10.1016/j.wse.2023.05.002

Experiments on two-phase flow in hydraulic jump on pebbled rough bed: Part 1–Turbulence properties and particle chord time and length

doi: 10.1016/j.wse.2023.05.002
  • Received Date: 2022-10-12
  • Accepted Date: 2023-04-21
  • Available Online: 2023-12-14
  • This study reported and discussed turbulence characteristics, such as turbulence intensity, correlation time scales, and advective length scales. The characteristic air–water time scale, including the particle chord time and length and their probability density functions (PDFs), was investigated. The results demonstrated that turbulence intensity was relatively greater on a rough bed in the roller length, whereas further downstream, the decay rate was higher. In addition, the relationship between turbulence intensity and dimensionless bubble count rate reflected an increase in turbulence intensity associated with the number of entrained particles. Triple decomposition analysis (TDA) was performed to determine the contributions of slow and fast turbulent components. The TDA results indicated that, regardless of bed type and inflow conditions, the sum of the band-pass (T'u) and high-pass (Tu) filtered turbulence intensities was equal to the turbulence intensity of the raw signal data (Tu). Tu highlighted a higher turbulence intensity and larger vorticities on the rough bed for an identical inflow Froude number. Additional TDA results were presented in terms of the interfacial velocity, auto- and cross-correlation time scales, and longitudinal advection length scale, with the effects of low- and high-frequency signal components on each highlighted parameter. The analysis of the air chord time indicated an increase in the proportion of small bubbles moving downstream. The second part of this research focused on the basic properties of particle grouping and clustering.

     

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  • [1]
    Abbaspour, A., Parvini, S., Dalir, A.H., 2016. Effect of buried plates on scour profiles downstream of hydraulic jump in open channels with horizontal and reverse bed slopes. Water Science and Engineering 9(4), 329-335. https://doi.org/10.1016/j.wse.2017.01.003.
    [2]
    Bahmanpouri, F., 2019. Experimental Study of Air Entrainment in Hydraulic Jump on Pebbled Rough Bed. PhD Dissertation. The University of Napoli Federico II, Napoli. https://doi.org/10.13140/RG.2.2.27625.16485.
    [3]
    Bahmanpouri, F., Gualtieri, C., Chanson, H., 2022. Air-water flow properties in hydraulic jumps on rough pebbled bed. ISH Journal of Hydraulic Engineering 1-10. https://doi.org/10.1080/09715010.2022.2068354.
    [4]
    Bahmanpouri, F., Gualtieri, C., Chanson, H., 2023. Flow patterns and free-surface dynamics in hydraulic jump on pebbled rough bed. Proceedings of the Institution of Civil Engineers 176(1), 32-49. https://doi.org/10.1680/jwama.20.00040.
    [5]
    Cao, G., Kandzia, C., Muller, D., Heikkinen, J., Kosonen, R., Ruponen, M., 2013. Experimental study of the effect of turbulence intensities on the maximum velocity decay of an attached plane jet. Energy and Buildings 65, 127-136. https://doi.org/10.1016/j.enbuild.2013.05.041.
    [6]
    Chachereau, Y., Chanson, H., 2011. Free-surface fluctuations and turbulence in hydraulic jumps. Experimental Thermal and Fluid Science 35(6), 896-909. https://doi.org/10.1016/j.expthermflusci.2011.01.009.
    [7]
    Chanson, H., Brattberg, T., 2000. Experimental study of the air-water shear flow in a hydraulic jump. International Journal of Multiphase Flow 26(4), 583-607. https://doi.org/10.1016/S0301-9322(99)00016-6.
    [8]
    Chanson, H., Toombes, L., 2002. Air-water flows down stepped chutes: Turbulence and flow structure observations. International Journal of Multiphase Flow 28(11), 1737-1761. https://doi.org/10.1016/S0301-9322(02)00089-7.
    [9]
    Chanson, H., 2007. Bubbly flow structure in hydraulic jump. European Journal of Mechanics - B/Fluids 26(3), 367-384. https://doi.org/10.1016/j.euromechflu.2006.08.001.
    [10]
    Chanson, H., 2010. Convective transport of air bubbles in strong hydraulic jumps. International Journal of Multiphase Flow 36(10), 798-814. https://doi.org/10.1016/j.ijmultiphaseflow.2010.05.006.
    [11]
    Ervine, D.A., Falvey, H.T., 1987. Behavior of turbulent water jets in the atmosphere and in plunge pools. Proceedings of the Institution of Civil Engineering, Part 2 83, 295-314. https://doi.org/10.1680/iicep.1987.353.
    [12]
    Felder, S., 2013. Air-Water Flow Properties on Stepped Spillways for Embankment Dams: Aeration, Energy Dissipation and Turbulence on Uniform, Non-uniform and Pooled Stepped Chutes. Ph.D. Dissertation. The University of Queensland, Brisbane.
    [13]
    Felder, S., Chanson, H., 2014. Triple decomposition technique in air-water flows: Application to instationary flows on a stepped spillway. International Journal of Multiphase Flow 58, 139-153. https://doi.org/10.1016/j.ijmultiphaseflow.2013.09.006.
    [14]
    Felder, S., Chanson, H., 2016. An Experimental Study of Air-Water Flows in Hydraulic Jumps with Channel Bed Roughness. WRL Research Report WRL 259. University of New South Wales, Sydney.
    [15]
    Felder, S., Chanson, H., 2018. Air-Water flow patterns of hydraulic jumps on uniform beds macroroughness. Journal of Hydraulic Engineering 144(3), 04017068. https://doi.org/10.1061/(ASCE)HY.1943-7900.0001402.
    [16]
    Gualtieri, C., Chanson, H., 2013. Interparticle arrival time analysis of bubble distributions in a dropshaft and hydraulic jump. Journal of Hydraulic Research 51(3), 253-264.
    [17]
    Gualtieri, C., Chanson, H., 2021. Physical and numerical modelling of air-water flows: An introductory overview. Environmental Modelling & Software 143, 105109. https://doi.org/10.1016/j.envsoft.2021.105109.
    [18]
    Keulegan, G.H., Patterson, G.W., 1940. A criterion for instability of flow in steep channels. Eos, Transactions American Geophysical Union 21(2), 594-596. https://doi.org/10.1029/TR021i002p00594.
    [19]
    Khanahmadi, E., Dehghani, A.A., Halaghi, M.M., Kordi, E., Bahmanpouri, F., 2022. Investigating the characteristic of hydraulic T-jump on rough bed based on experimental and numerical modeling. Modeling Earth Systems and Environment 8, 5695-5712. https://doi.org/10.1007/s40808-022-01434-2.
    [20]
    Kramer, M., Chanson, H., 2018. Transition flow regime on stepped spillways: Air-water flow characteristics and step-cavity fluctuations. Environmental Fluid Mechanics 18(4), 947-965. https://doi.org/10.1007/s10652-018-9575-y.
    [21]
    Lance, M., Bataille, J., 1991. Turbulence in the liquid phase of a uniform bubbly air-water flow. Journal of Fluid Mechanics 222, 95-118. https://doi.org/10.1017/S0022112091001015.
    [22]
    Longo, S., 2010. Experiments on turbulence beneath a free-surface in a stationary field generated by a Crump weir: Free-surface characteristics and the relevant scales. Experiments in Fluids 49, 1325-1338. https://doi.org/10.1007/s00348-010-0881-5.
    [23]
    Longo, S., 2011. Experiments on turbulence beneath a free-surface in a stationary field generated by a Crump weir: Turbulence structure and correlation with the free-surface. Experiments in Fluids 50, 201-215. https://doi.org/10.1007/s00348-010-0921-1.
    [24]
    Mossa, M., 1999. On the oscillating characteristics of hydraulic jumps. Journal of Hydraulic Research 37(4), 541-558. https://doi.org/10.1080/00221686.1999.9628267.
    [25]
    Mouaze, D., Murzyn, F., Chaplin, J.R., 2005. Free-surface length scale estimation in hydraulic jumps. Journal of Fluids Engineering 127(6), 1191-1193. https://doi.org/10.1115/1.2060736.
    [26]
    Murzyn, F., Mouaze, D., Chaplin, J.R., 2007. Air-water interface dynamic and free-surface features in hydraulic jumps. Journal of Hydraulic Research 45(5), 679-685. https://doi.org/10.1080/00221686.2007.9521804.
    [27]
    Murzyn, F., Chanson, H., 2009. Experimental investigation of bubbly flow and turbulence in hydraulic jumps. Environmental Fluid Mechanics 9(2) 143159. https://doi.org/10.1007/s10652-008-9077-4.
    [28]
    Pagliara, S., Roshni, T., Carnacina, I., 2011. Turbulence, aeration and bubble features of air-water flows over macro- and intermediate roughness. Water Science and Engineering 4(2),170-184. https://doi.org/10.3882/j.issn.16742370.2011.02.005.
    [29]
    Panidis, T., 2011. The development of the structure of water-air bubble grid turbulence. International Journal of Multiphase Flow 37(6), 565-575. https://doi.org/10.1016/j.ijmultiphaseflow.2011.03.010.
    [30]
    Taravatrooy, N., Bahmanpouri, F., Nikoo, M.R., Gualtieri, C., Izady, A., 2021. Estimation of air-flow parameters and turbulent intensity in hydraulic jump on rough bed using Bayesian model averaging. Applied Soft Computing 103, 107165. https://doi.org/10.1016/j.asoc.2021.107165.
    [31]
    Wang, H., 2014. Turbulence and Air Entrainment in Hydraulic Jumps. Ph.D. Dissertation. The University of Queensland, Brisbane. https://doi.org/10.14264/uql.2014.542.
    [32]
    Wang, H., Felder, S., Chanson, H., 2014. An experimental study of turbulent two-phase flow in hydraulic jumps and application of a triple decomposition technique. Experiments in Fluids 55(7), 1775. https://doi.org/10.1007/s00348-014-1775-8.
    [33]
    Zhang, G., Wang, H., Chanson, H., 2013. Turbulence and aeration in hydraulic jumps: Free-surface fluctuation and integral turbulent scale measurements. Environmental Fluid Mechanics 13(2), 189-204. https://doi.org/10.1007/s10652-012-9254-3.
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