Abstract
The results of an experimental study of a bubble diameters variation with a distance from the gas injection point in an upward bubbly flow in an inclined flat channel are presented. The measurements were carried out for a superficial liquid velocity of 0.51 m/s (Re = 12400) and various volumetric gas flow rate ratios. It is shown that at low values of volumetric gas flow rate ratio (β < 2 %), there is almost no bubble coalescence; therefore, the channel inclination angle and distance from the point of gas injection into the liquid flow do not affect the average diameter of gas bubbles.
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References
I. Zun, The transverse migration of bubbles influenced by walls in vertical bubbly flow, Inter. J. Multiphase Flow, 1980, Vol. 6, P. 583–588.
I.A. Evdokimenko and P.D. Lobanov, Heat transfer in bubbly downward flow at low gas flow rates, J. Physics: Conference Series, 2018, Vol. 1105, P. 012089–1–012089–5.
P.D. Lobanov, Wall shear stress and heat transfer of downward bubbly flow at low flow rates of liquid and gas, J. Engng Thermophysics, 2018, Vol. 27, P. 232–244.
P.D. Lobanov and M.A. Pakhomov, Experimental and numerical study of heat transfer enhancement in a turbulent bubbly flow in a sudden pipe expansion, J. Engng Thermophys., 2017, Vol. 26, P. 377–390.
O.N. Kashinsky, A.V. Chinak, and E.V. Kaipova, Bubbly gas-liquid flowin an inclined restangular channel, Thermophysics and Aeromechanics, 2003, Vol. 10, No. 1, P. 69–76.
O.N. Kashinsky, V.V. Randin, and A.V. Chinak, Heat transfer and shear stress in a gas-liquid flow in an inclined flat channel, J. Engng Thermophys., 2014, Vol. 23, P. 39–46.
O.N. Kashinsky, A.V. Chinak, B.M. Smirnov, and M.S. Uspenskiy, Mass transfer from a wall to a gas-liquid flow in an inclined flat channel, J. Engng Phys. Thermophys., 1993, Vol. 64, No. 5, P. 422–426.
S. Piedra, J. Lu, E. Ramos, and G. Tryggvason, Numerical study of the flow and heat transfer of bubbly flows in inclined channels, Inter. J. Heat and Fluid Flow, 2015, Vol. 56, P. 43–50.
A.S. Chernyshev and A.A. Shmidt, Influence of approximation of the size distribution function of dispersed inclusions on the structure of a polydisperse bubbly flow, in: Proc. Scientific Research Institute of System Development of RAS, 2018, Vol. 8, P. 52–58.
C. Dong and T. Hibiki, Modeling of heat transfer coefficient for upward no-phase-change two-phase flow in inclined pipes, Applied Thermal Engng., 2020, Vol. 169, P. 114921–1–114921–16.
Y. Fu and Y. Liu, Development of a robust image processing technique for bubbly flow measurement in a narrow rectangular channel, Inter. J. Multiphase Flow, 2016, Vol. 84, P. 217–228.
M.A. Vorobiev, O.N. Kashinsky, P.D. Lobanov, and A.V. Chinak, Formation of the finely dispersed gas phase in upward and downward fluid flows, Fluid Dynamics, 2012, No. 4, P. 494–500.
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The research was carried out within the framework of the state assignment to the IT SB RAS under the program AAAA-A18-118051690120-2.
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Gorelikova, A.E., Randin, V.V. & Chinak, A.V. Bubble diameters variation along the gas-liquid flow in a flat channel at various inclination angles. Thermophys. Aeromech. 27, 767–773 (2020). https://doi.org/10.1134/S086986432005011X
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DOI: https://doi.org/10.1134/S086986432005011X