Modelling of dispersed bubble and droplet flow at high phase fractions

Behzadi, A.; Issa, R. I.; Rusche, Henrik

doi:10.1016/j.ces.2003.11.018

Cited by 202 publications

(132 citation statements)

References 16 publications

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“…The main difficulty for this class of problems is not only the usual one for fluids pertaining to the free-surface flow (e.g. see [22,42,33,5,72,70,71]) but also the fluid-structure interface. Providing reliable description at the interface for a fluid-structure interaction problem is quite a challenge, since the descriptions generally used for each of the sub-problems are different: for the structure part, it is natural to follow material point motion in a Lagrangian formulation, while an Eulerian formulation is often preferred 1 for the fluid part.…”

Section: Introductionmentioning

confidence: 99%

Partitioned solution to fluid–structure interaction problem in application to free-surface flows

Kassiotis

Ibrahimbegović

Matthies

2010

European Journal of Mechanics - B/Fluids

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In this work we discuss a way to compute the impact of free-surface flow on nonlinear structures. The approach chosen rely on a partitioned strategy that allows to solve strongly coupled fluid-structure interaction problem. It is then possible to re-use existing and validated strategy for each sub-problem. The structure is formulated in a Lagrangian way and solved by the finite element method. The free-surface flow approach considers a Volume-Of-Fluid (VOF) strategy formulated in an Arbitrary Lagrangian-Eulerian (ALE) framework, and the finite volume are used to discrete and solve this problem. The software coupling is ensured in an efficient way using the Communication Template Library (CTL). Numerical examples presented herein concern 2D validations case but also 3D problems with a large number of equations to be solved.

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Section: Introductionmentioning

confidence: 99%

Partitioned solution to fluid–structure interaction problem in application to free-surface flows

Kassiotis

Ibrahimbegović

Matthies

2010

European Journal of Mechanics - B/Fluids

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“…Even if further verification is 501 required for flows with significant void fraction (Behzadi et al, 2004), at the present time this 502 approach is applied to the whole database, as done in the majority of the previous works 503 …”

mentioning

confidence: 99%

“…Indeed, experimental measurements 510 suggest that a value of unity is approached starting from void fractions as small as 6 % 511 (Behzadi et al, 2004). 512…”

mentioning

confidence: 99%

Multiphase turbulence in bubbly flows: RANS simulations

Colombo

Fairweather

2015

International Journal of Multiphase Flow

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“…Among these interphase forces, the drag force, → F drag , is the dominant component. The drag force per unit volume can be expressed as [25,30] …”

Section: Interphase Momentum Transfermentioning

confidence: 99%

An Overall Bubble Diameter Model for the Flow Boiling and Numerical Analysis through Global Information Searching

Zhang

Lin

et al. 2018

Energies

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Bubble diameter is important for the three-dimensional nucleate boiling two-phase flow simulation. However, the bubble diameter is rarely considered as a variable because it is difficult to estimate. In this paper, a novel bubble diameter model is proposed for the boiling flow. The heat transfer growth, the breakup or coalescence of collision and the liquid impacting separation are considered as the factors affecting the bubble diameter, and three bubble diameter sub-models are developed to calculate the overall bubble diameter based on a departure diameter. In the model, the heat transfer growth is calculated after estimating the bubble location. The collision variation is deduced from the interfacial area concentration equation. The liquid impacting variation is calculated through phase interaction force and gas viscous force. The proposed model is conducted through global information searching in the flow boiling simulation and validated using the void fraction and temperature data from the literature. The effects of the heat transfer growth, the collision, and the separating volume on the bubble diameter are discussed.

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Modelling of dispersed bubble and droplet flow at high phase fractions

Cited by 202 publications

References 16 publications

Partitioned solution to fluid–structure interaction problem in application to free-surface flows

Partitioned solution to fluid–structure interaction problem in application to free-surface flows

Multiphase turbulence in bubbly flows: RANS simulations

An Overall Bubble Diameter Model for the Flow Boiling and Numerical Analysis through Global Information Searching

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