2019
DOI: 10.1088/1742-6596/1369/1/012013
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Flow structure and heat transfer in a turbulent vertical bubbly flow downstream of a sudden duct expansion

Abstract: The flow structure and heat transfer in bubbly flows in a sudden duct expansion were studied. The data was obtained both in a pipe and a flat channel with a sudden expansion. Measurements are performed using shadow photography and PIV/LIF system. For modelling two-phase bubbly flow the set of RANS equations is used. Reynolds stress transport model is used to predict the turbulence of the liquid phase. The influence of sudden channel expansion on the distribution of bubbles and it`s velocity is shown. It is sho… Show more

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Cited by 2 publications
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“…The latter lead to a redistribution of the void fraction (Ahmed, 2007;Roman et al, 2020;Liang et al, 2022) and a modification of the flow regime or sub-regime downstream the singularity (Attou et al, 2000;Kondo et al, 2002;Arabi et al, 2018Arabi et al, , 2021bZhang and Goharzadeh, 2019). The hydrodynamics parameters (Aloui and Souhar, 1996b;Ahmed et al, 2008;Rosero et al, 2021) as well as the heat transfer characteristics (Lobanov et al, 2019;Chinak et al, 2019), in the case of non-isothermal flows, are also disturbed.…”
mentioning
confidence: 99%
“…The latter lead to a redistribution of the void fraction (Ahmed, 2007;Roman et al, 2020;Liang et al, 2022) and a modification of the flow regime or sub-regime downstream the singularity (Attou et al, 2000;Kondo et al, 2002;Arabi et al, 2018Arabi et al, , 2021bZhang and Goharzadeh, 2019). The hydrodynamics parameters (Aloui and Souhar, 1996b;Ahmed et al, 2008;Rosero et al, 2021) as well as the heat transfer characteristics (Lobanov et al, 2019;Chinak et al, 2019), in the case of non-isothermal flows, are also disturbed.…”
mentioning
confidence: 99%