CFD modelling and validation of upward bubbly flow in an adiabatic vertical pipe using the quadrature method of moments
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Otros documentos de la autoría: Peña Monferrer, Carlos; Passalacqua, A.; chiva, sergio; Muñoz-Cobo, Jose-Luis
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
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http://dx.doi.org/10.1016/j.nucengdes.2016.03.006 |
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Título
CFD modelling and validation of upward bubbly flow in an adiabatic vertical pipe using the quadrature method of momentsFecha de publicación
2016Editor
ElsevierISSN
0029-5493Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://www.sciencedirect.com/science/article/pii/S0029549316001199Palabras clave / Materias
Resumen
An Eulerian–Eulerian approach was investigated to model adiabatic bubbly flow with CFD techniques. In
the framework of the OpenFOAM® software, a two-fluid model solver was modified to include a population
balance ... [+]
An Eulerian–Eulerian approach was investigated to model adiabatic bubbly flow with CFD techniques. In
the framework of the OpenFOAM® software, a two-fluid model solver was modified to include a population
balance equation, solved with the quadrature method of moments approximation to predict upward
bubbly flow in vertical pipes considering the polydisperse nature of two-phase flow. Some progress have
beenmade recently solvingpopulationbalance equations in OpenFOAM® and this researchaims to extend
its application to the case of vertical pipes under different conditions of liquid and gas velocities. In order
to test the solver for nuclear applications, interfacial forces and bubble induced turbulence models were
included to provide to this solver the capability to correctly predict the behavior of the continuous and
disperse phases. Two-phase flow experiments with different superficial velocities of gas and liquid are
used to validate the model and its implementation. Radial profiles of void fraction, gas and liquid velocities,
Sauter mean diameter and turbulence intensity are compared to the computational results. These
results are in satisfactory agreement with the experiments, showing the capability ofthe solver to predict
two-phase flow characteristics. [-]
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Nuclear Engineering and Design 301 (2016) 320–332Derechos de acceso
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