Capturing of interface topological changes in two-phase gas–liquid flows using a coupled volume-of-fluid and level-set method (VOSET)

Ansari, Mohammad Reza; Azadi, Reza; Ebrahim, Salimi

doi:10.1016/j.compfluid.2015.09.014

Cited by 24 publications

(9 citation statements)

References 32 publications

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“…However, the LS method is found to have a deficiency in preserving volume conservation. Therefore, in order to overcome the deficiencies, the coupled LS-VOF (CLSVOF) method , is generally applied in recent works.…”

Section: Multiscale Modeling Methods For Il Systemsmentioning

confidence: 99%

Multiscale Studies on Ionic Liquids

et al. 2017

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Ionic liquids (ILs) offer a wide range of promising applications because of their much enhanced properties. However, further development of such materials depends on the fundamental understanding of their hierarchical structures and behaviors, which requires multiscale strategies to provide coupling among various length scales. In this review, we first introduce the structures and properties of these typical ILs. Then, we introduce the multiscale modeling methods that have been applied to the ILs, covering from molecular scale (QM/MM), to mesoscale (CG, DPD), to macroscale (CFD for unit scale and thermodynamics COSMO-RS model and environmental assessment GD method for process scale). In the following section, we discuss in some detail their applications to the four scales of ILs, including molecular scale structures, mesoscale aggregates and dynamics, and unit scale reactor design and process design and optimization of typical IL applications. Finally, we address the concluding remarks of multiscale strategies in the understanding and predictive capabilities of ILs. The present review aims to summarize the recent advances in the fundamental and application understanding of ILs.

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Section: Multiscale Modeling Methods For Il Systemsmentioning

confidence: 99%

Multiscale Studies on Ionic Liquids

et al. 2017

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“…Later, the VOSET method was extended to unstructured grids 17 and general curvilinear grids 18 and successfully applied in capturing interface topological changes in two-phase incompressible flows. 19 Recently, a VOSET method on arbitrary convex polygon grids for capturing interface of two-phase/-material incompressible flows was developed by Ling et al 20 It's worth noting that all of the above mentioned works with the coupled VOF and level set interface capturing method are focused on incompressible interfacial flows, while the application of the coupled interface capturing method for compressible interfacial flows is still rare. In the simulation of compressible interfacial flows, especially with large topological change, an indirect arbitrary Lagrangian-Eulerian (ALE) method [21][22][23][24] is widely adopted.…”

Section: Introductionmentioning

confidence: 99%

“…Wang et al 16 developed a VOF method which couples a purely geometrical construction for the signed distance function to estimate geometrical properties on general structured grids. Later, the VOSET method was extended to unstructured grids 17 and general curvilinear grids 18 and successfully applied in capturing interface topological changes in two‐phase incompressible flows 19 . Recently, a VOSET method on arbitrary convex polygon grids for capturing interface of two‐phase/‐material incompressible flows was developed by Ling et al 20 …”

Section: Introductionmentioning

confidence: 99%

A two‐dimensional multimaterial ALE method for compressible flows using coupled volume of fluid and level set interface reconstruction

Cheng

Zhang

2023

Numerical Methods in Fluids

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In this work, we present a two‐dimensional multimaterial arbitrary Lagrangian–Eulerian (ALE) method for simulating compressible flows in which a novel coupled volume of fluid and level set interface reconstruction (VOSET) method is developed for interface capturing. The VOSET method combines the merits of both the volume of fluid method and the level set method by using a geometrical iterative operation. Compared to the original VOSET method, the novel VOSET method proposed in this work further improves the accuracy and fidelity in interface reconstruction procedure, especially in under‐resolved regions. Several typical two‐dimensional numerical experiments are presented to investigate the effectiveness of the proposed VOSET method and its performance when coupling with the multimaterial ALE solver. Numerical results demonstrate its good capability in capturing material interfaces during the simulation of compressible two‐material flows.

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“…Based on this approach, many other variations have been proposed of coupling both VOF and LS making use of the advantages of both methods. The proposed CLSVOF methods rely on either geometrical VOF methods such as piecewise-linear interface construction/calculation (PLIC) 7,34,35 or algebraic methods. 36 Two of the most commonly met challenges for coupling VOF and LS are the interface reconstruction in VOF and the mapping algorithm to the level set field so that it conserves mass in an efficient setting suitable for different types of meshes.…”

Section: Introduction 11 Scopementioning

confidence: 99%

A finite volume coupled level set and volume of fluid method with a mass conservation step for simulating two‐phase flows

Lyras

Lee

2022

Numerical Methods in Fluids

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This article presents a finite volume method for simulating two-phase flows using a level set approach coupled with volume of fluid method capable of simulating sharp fluid interfaces. The efficiency of the method is a result of the fact that the interface is calculated in order to satisfy mass conservation with no explicit interface reconstruction step and the mass fluxes across cell-faces are corrected to respect the recovered volume fraction. The mass-conservation correction step proposed here, is utilized using an iterative algorithm which solves a reaction-diffusion equation for the mass correction of the level set. The re-sharpened volume fraction is used for the new volumetric fluxes at each cell which are calculated through the proposed algorithm that guarantees that they satisfy mass conservation. The algorithm is not limited in representing the interface with the 0.5-contour and is applicable for arbitrary polyhedral cells. Good accuracy and mass conservation are achieved when compared to other conservative approaches.

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Capturing of interface topological changes in two-phase gas–liquid flows using a coupled volume-of-fluid and level-set method (VOSET)

Cited by 24 publications

References 32 publications

Multiscale Studies on Ionic Liquids

Multiscale Studies on Ionic Liquids

A two‐dimensional multimaterial ALE method for compressible flows using coupled volume of fluid and level set interface reconstruction

A finite volume coupled level set and volume of fluid method with a mass conservation step for simulating two‐phase flows

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