Local instant formulation of two-phase flow

Kataoka, Isao

doi:10.1016/0301-9322(86)90049-2

Cited by 194 publications

(122 citation statements)

References 7 publications

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“…• concerning the modeling of two-phase flows with separated phases and non miscible fluids, the most widely used model in the literature is the single fluid or one-fluid model (OFM) [21][22][23]. This Eulerian model is based on the use of a regular kernel of control volumes on which the interface is located by means of an auxiliary Eulerian variable.…”

Section: Introductionmentioning

confidence: 99%

A priori filtering and LES modeling of turbulent two-phase flows application to phase separation

et al. 2018

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The Large Eddy Simulation (LES) of two-phase flows with resolved scale interfaces is investigated through the a priori filtering of Direct Numerical Simulations (DNS) of one-fluid and multifield models. A phase inversion benchmark [1][2][3][4] is considered highlighting many coalescence and interface rupture events in a kind of atomization process. The order of magnitude of specific two-phase subgrid LES terms is first considered with the two modeling approaches. Then, different existing models such as Smagorinsky [5], Wall-Adapting Local Eddyviscosity (WALE) model [6], Bardina [7], Mixed [8] and Approximate Deconvolution Model (ADM) [9] are used to account for two-phase subgrid effects. These models are compared to filtered DNS results. The main conclusion concerning a priori LES filtering is that the inertia term is not predominant in two-phase flows with fragmentation and rupture of interface. This conclusion is different from that of the studies of [3,[10][11][12][13]. concerning LES models, functional modeling do 1 not correlate to filtered DNS results whereas structural approaches do. Bardina and ADM are clearly the good LES framework to consider for two-phase flows with resolved scale interfaces. ADM is clearly better than Bardina in our study. The authors greatly acknowledge the reviewer for its comments and remarks that have guided us in improving the technical and editorial aspects of the manuscript. From a general point of view, all the comments and remarks recommended by the reviewer have been taken into account. They are highlighted in the text in red. More specifically, we can detail them as follows: COMPUTERS & FLUIDS 1) I would recommend to add the main conclusions to the abstract and to add a separate section conclusions to the paper.In agreement with reviewer remark and in order to improve the fast reading and understanding of the paper, we have included a conclusion part in the abstract. In addition, the last section have been extended to "Summary, conclusion and future work", with addition of conclusions in order to highlight the originality and main results of the work. 2) Abstract : DNS and ADM should be defined.Done. The same has been achieved for the Wall-Adapting Local Eddy-viscosity (WALE) model. 3) A streak of the interface points towards the upper left corner of the box. Is that physical?Yes, this a physical feature of the interface. As we are dealing with liquid-liquid twophase flows, when the light fluid (blue surface) goes to the top part of the cavity under gravity effects, heavy liquid can be trapped near vertical walls or vertical corners, inducing this king of interface topology.4) The sentence "Among the few existing …" seems to have a grammar mistake. Detailed Response to ReviewersThis sentence has been rewritten as follows "Among the few existing references, it is worth mentioning the work on LES formulation for the one-fluid model and subsequent a priori LES filtering of DNS simulations for the estimate of new specific two-phase contributions in the mass, momentu...

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Section: Introductionmentioning

confidence: 99%

A priori filtering and LES modeling of turbulent two-phase flows application to phase separation

et al. 2018

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“…Tank 241-AN-103 initially received liquid removed from SSTs by saltwell pumping with regular transfers out to the 242-A Evaporator from 1982-1986. In February 1986, the tank was pumped out to a 224-cm (88-in.)…”

Section: Tank 241-an-103mentioning

confidence: 99%

“…where p is the local instantaneous gas indicator function (Kataoka 1986;Zhang and Prosperetti 1993).…”

Section: A1o Gas Volume Calculation Modelmentioning

confidence: 99%

Data Observations on Double Shell Tank (DST) Flammable Gas Watch List Tank Behavior

Hedengren¹

2000

115

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“…However, the property transfer has to occur across an internal surface area, which can be enormously complex depending on the flow regime. Most researchers acknowledge the importance of interfacial area to enable correct multi-fluid models (Ishii, 1980Kataoka, 1986aKataoka, ,1986bKataoka, , 1990, but the complexity of the problem (Stewart, 1984) has forced most to either use an empirical correlation or assume a constant contact area or particle size (Kashiwa, 1987). Therefore, a method to calculate interfacial area is important to advanced multi-fluid models.…”

Section: Macroscopic and Multi-fluid Modelsmentioning

confidence: 99%

“…For this case, we are interested in the total balance over the control volume (Kataoka, 1986b, Hestroni, 1982 as opposed to the transfer of a property from phase k to phase j. Therefore, the individual phase k property balance equations can be added and the additional terms Yi and 'Pig, represent properties and the generation of properties specific to the internal interfaces that are present.…”

Section: General Property For a Control Volume With Multiple Fluidsmentioning

confidence: 99%

Modeling interfacial area transport in multi-fluid systems

Yarbro

1996

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Local instant formulation of two-phase flow

Cited by 194 publications

References 7 publications

A priori filtering and LES modeling of turbulent two-phase flows application to phase separation

A priori filtering and LES modeling of turbulent two-phase flows application to phase separation

Data Observations on Double Shell Tank (DST) Flammable Gas Watch List Tank Behavior

Modeling interfacial area transport in multi-fluid systems

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