Numerical investigation of models for drag, lift, wall lubrication and turbulent dispersion forces for the simulation of gas–liquid two-phase flow

Yamoah, S.; Martínez‐Cuenca, Raúl; Monrós, G.; Chiva, S.; Macián‐Juan, Rafael

doi:10.1016/j.cherd.2015.04.007

Cited by 68 publications

(32 citation statements)

References 33 publications

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“…33,34 In a swirling flow, the radial forces act on bubbles with a diameter greater than 100 mm. 33,34 In a swirling flow, the radial forces act on bubbles with a diameter greater than 100 mm.…”

Section: Verification Through Simulationmentioning

confidence: 99%

“…The momentum exchange between the liquid and the gas is commonly formulated in terms of the drag, pressure gradient force, lift force, virtual mass force, and turbulent dispersion force. 33,34 In a swirling flow, the radial forces act on bubbles with a diameter greater than 100 mm. In general, centrifugal force > pressure gradient force > drag force > lift force > virtual mass force.…”

Section: Verification Through Simulationmentioning

confidence: 99%

See 1 more Smart Citation

Bubble‐separation dynamics in a planar cyclone: Experiments and CFD simulations

Qian

et al. 2018

AIChE Journal

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A planar cyclone is designed for visualizing bubbles in the cross‐section of a degassing hydrocyclone. The pressure distribution is studied through a series of experiments and Reynolds stress model simulations. The velocity distribution of the planar cyclone mostly exhibits the quasi‐forced vortex zone and boundary layer zone. The bubble dynamics are simulated using both Euler‐Euler and Euler‐Lagrange approaches, and the output is compared with the imaging results. The Euler‐Euler simulation provides more accurate predictions of the bubble trajectory. The histograms of residence time and traveling distance given by the Euler‐Lagrange approach exhibit a reasonably regular pattern. With higher values of the inlet Reynolds number, stronger forces acting on the bubbles lead to a decreased but more uniform residence time. © 2018 American Institute of Chemical Engineers AIChE J, 64: 2689–2701, 2018

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Section: Verification Through Simulationmentioning

confidence: 99%

Section: Verification Through Simulationmentioning

confidence: 99%

Bubble‐separation dynamics in a planar cyclone: Experiments and CFD simulations

Qian

et al. 2018

AIChE Journal

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“…where, the subscript i indicates the phase (gas/liquid/oil) present in the system, ߙ is the void these forces, the reader is referred to [133,[136][137][138].…”

Section: Methodsmentioning

confidence: 99%

“…However, this approach is often used for direct numerical simulation (DNS) of a finite number of bubbles in order to derive correlations also known as closure models, for the interfacial forcing terms, such as drag and lift. These forces need to be modelled as sub-grid-scale interactions in both the TFM and Euler-Lagrange methods [138,150,151].…”

Section: Bubbly Flowmentioning

confidence: 99%

A critical review of flow maps for gas-liquid flows in vertical pipes and annuli

Mitchell

Rufford

et al. 2017

Chemical Engineering Journal

134

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The accurate prediction of two-phase gas and liquid flow regimes is important in the proper design, operation and scale-up of pressure management and fluid handling systems in a wide range of industrial processes. This paper provides a comprehensive review of 3947 published experimental data points for gas-liquid flow maps in vertical pipes and annuli, including a critical analysis of state-of-the-art measurement techniques used to identify bubble, slug, churn and annular flow regimes. We examine the critical factors of pipe geometry (diameters, deviation from vertical), fluid properties and flow conditions that affect the transition from one flow regime to another. The review surveys the theoretical models available to predict flow regime transitions, and we validate the accuracy of these models using the published experimental data. The most reliable flow regime transition models for Moreover, based on the review we provide an outlook on the research needs and important developments in prediction of two-phase flow in vertical pipes including the use of computational fluid dynamics (CFD) techniques to simulate gas-liquid flows in vertical geometries.

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“…In recent years, a number of computational studies have assessed different inter‐phase closure relations by means of qualitative comparison of model predictions of local gas hold‐up and velocity profile against limited experimental data . While the aforementioned studies have provided significant insight into the sensitivity of Euler–Euler model results to closure relations, they have not provided a definitive test of the ability of this model to predict the overall gas hold‐up.…”

Section: Introductionmentioning

confidence: 99%

On the prediction of gas hold‐up in two‐phase flow systems using an Euler–Euler model

et al. 2020

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We quantify the ability of the two-fluid Euler-Euler model to predict the overall gas hold-up during two-phase flow in vertical columns using a combination of experiments and simulations. Gas hold-up in a bubble column and gas hold-up in the less-frequently studied co-current flow are investigated. For homogeneous flow characterized by nearly uniform bubble size, Euler-Euler model predictions are within 10% of the experimental values for both modes of operation, if the bubble diameter supplied as input to the model is the average bubble diameter in the physical system. This also holds true for heterogeneous flow in bubble columns despite the presence of a broad distribution of bubble sizes, if turbulence and bubble swarm effects on momentum exchange between phases are properly accounted for. Swarm corrections adequate for bubble columns, are less successful for co-current heterogeneous flow, for which gas hold-up predictions are least accurate (average error of 22%). K E Y W O R D S churn-turbulent flow regime, dispersed flow regime, experimental validation, gas-liquid flow, two-fluid Euler-Euler model

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Numerical investigation of models for drag, lift, wall lubrication and turbulent dispersion forces for the simulation of gas–liquid two-phase flow

Cited by 68 publications

References 33 publications

Bubble‐separation dynamics in a planar cyclone: Experiments and CFD simulations

Bubble‐separation dynamics in a planar cyclone: Experiments and CFD simulations

A critical review of flow maps for gas-liquid flows in vertical pipes and annuli

On the prediction of gas hold‐up in two‐phase flow systems using an Euler–Euler model

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