Articles with "bubbly flows" as a keyword



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On the dynamics of instabilities in two-fluid models for bubbly flows

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Published in 2017 at "Chemical Engineering Science"

DOI: 10.1016/j.ces.2017.03.063

Abstract: In this paper we look at instabilities in bubbly gas-liquid flows and investigate the emergence and characteristics of phase heterogeneities. We apply a shared-pressure two-fluid model to low bubble loadings and demonstrate the existence of… read more here.

Keywords: dynamics instabilities; fluid; bubbly flows; two fluid ... See more keywords
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Stochastic DSMC method for dense bubbly flows: Methodology

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Published in 2018 at "Chemical Engineering Science"

DOI: 10.1016/j.ces.2017.11.002

Abstract: Abstract A stochastic Direct Simulation Monte Carlo (DSMC) method has been extended for handling bubble-bubble and bubble-wall collisions. Bubbly flows are generally characterized by highly correlated velocities due to presence of the surrounding liquid. The… read more here.

Keywords: methodology; dense bubbly; bubbly flows; method ... See more keywords
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Eulerian-Eulerian large eddy simulation of two-phase dilute bubbly flows

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Published in 2019 at "Chemical Engineering Science"

DOI: 10.1016/j.ces.2019.115156

Abstract: Abstract An efficient mathematical model is presented for conducting large eddy simulation (LES) of turbulent bubbly flows at low gas hold-ups. The mathematical model is based on the filtered multi-fluid equations derived by application of… read more here.

Keywords: gas; large eddy; model; bubbly flows ... See more keywords
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Development and evaluation of data-driven modeling for bubble size in turbulent air-water bubbly flows using artificial multi-layer neural networks

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Published in 2020 at "Chemical Engineering Science"

DOI: 10.1016/j.ces.2019.115357

Abstract: Abstract In the present study, we consider a new reliable model of the bubble size based on multi-layer artificial neural networks (ANN). A multi-layer ANN is used to establish a function for the bubble size… read more here.

Keywords: neural networks; multi layer; bubbly flows; size ... See more keywords
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A workflow for the sustainable development of closure models for bubbly flows

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Published in 2021 at "Chemical Engineering Science"

DOI: 10.1016/j.ces.2021.116807

Abstract: Abstract Many years of research in developing closure models for polydisperse bubbly flows have produced a plethora of empirical and semi-empirical models. The continuous development and analysis of such models requires their constant validation with… read more here.

Keywords: workflow sustainable; sustainable development; closure models; bubbly flows ... See more keywords
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Bubble-induced turbulence modeling for vertical bubbly flows

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Published in 2017 at "International Journal of Heat and Mass Transfer"

DOI: 10.1016/j.ijheatmasstransfer.2017.08.075

Abstract: Abstract Eulerian two-fluid model (TFM) has been the workhorse for several applications involving vertical bubbly flows due to its computational efficiency especially when applied to large-scale systems. The constituent phases are treated as interpenetrating continuous… read more here.

Keywords: vertical bubbly; turbulence; bubbly flows; model ... See more keywords