A Coupled Level Set and Volume of Fluid method with multi-directional advection algorithms for two-phase flows with and without phase change

Ningegowda, B.M.; Premachandran, B.

doi:10.1016/j.ijheatmasstransfer.2014.08.039

Cited by 72 publications

(13 citation statements)

References 53 publications

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“…Some examples of flow phenomena used to compare surface tension models are rising bubbles whose diameters are in the order of few millimetres [33][34][35], translating and rotating bubbles [64], oscillating droplets or bubbles [34], stagnant bubbles or droplets [34,35,39,64], Rayleigh-Taylor instability [37,38], Taylor bubbles [64], falling films [41], droplet splashing [38,39], capillary rise [42] and bubble evolution [37,40]. These typically compare the CSF model with height functions [33,34,64], PROST [37], PLIC [42], CLSVOF and its variants [37][38][39][40]64], FSF and SSF [42], and CSS [35,41] models. Although the flow scenarios that are used to compare surface tension models are diverse, they can be broadly categorised based on the dominance of surface tension in the flow using the Capillary number (Ca), which is defined as the ratio of viscous to surface tension forces in the system.…”

Section: Publication Remarksmentioning

confidence: 99%

Comparison of Surface Tension Models for the Volume of Fluid Method

Vachaparambil

Einarsrud

2019

Processes

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With the increasing use of Computational Fluid Dynamics to investigate multiphase flow scenarios, modelling surface tension effects has been a topic of active research. A well known associated problem is the generation of spurious velocities (or currents), arising due to inaccuracies in calculations of the surface tension force. These spurious currents cause nonphysical flows which can adversely affect the predictive capability of these simulations. In this paper, we implement the Continuum Surface Force (CSF), Smoothed CSF and Sharp Surface Force (SSF) models in OpenFOAM. The models were validated for various multiphase flow scenarios for Capillary numbers of 10 − 3 –10. All the surface tension models provide reasonable agreement with benchmarking data for rising bubble simulations. Both CSF and SSF models successfully predicted the capillary rise between two parallel plates, but Smoothed CSF could not provide reliable results. The evolution of spurious current were studied for millimetre-sized stationary bubbles. The results shows that SSF and CSF models generate the least and most spurious currents, respectively. We also show that maximum time step, mesh resolution and the under-relaxation factor used in the simulations affect the magnitude of spurious currents.

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Section: Publication Remarksmentioning

confidence: 99%

Comparison of Surface Tension Models for the Volume of Fluid Method

Vachaparambil

Einarsrud

2019

Processes

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“…The rotating disc has been proposed in [54] and considers a disc that undergoes a significant interface deformation and is used here to evaluate the ability of the presented methodology to transport under-resolved interface structures [6,9,33,55]. The computational domain is a unit square which contains a disc with radius R placed in the domain so that the disc centre is at (x, y) = (0.5, 0.75).…”

Section: Two-dimensional Rotating Discmentioning

confidence: 99%

A coupled level set and volume of fluid method with a re-initialisation step suitable for unstructured meshes

Lyras

Hanson

Fairweather

et al. 2020

Journal of Computational Physics

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“…[23,35,54] combine LS method and ghost-fluid approach [25] to incorporate jump conditions in two-phase flow with phase change. Further efforts in the framework of coupled VoF-LS methods were reported in [36,56,33]. The FT method has been extended to computations of phase change by [31,22,21,59,30,41].…”

Section: Introductionmentioning

confidence: 99%

Unstructured Level-Set Method For Saturated Liquid-Vapor Phase Change

Balcázar¹,

Rigola²,

Oliva³

2021

14th WCCM-ECCOMAS Congress

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A novel conservative level-set method for saturated liquid-vapor phase change on unstructured meshes is introduced. Transport equations are discretized by the finite-volume method on collocated unstructured grids. Mass transfer promoted by thermal phase change is computed using the energy jump condition at the interface, as a function of the temperature gradient. The fractional-step projection method is used for solving the pressure-velocity coupling, convective terms are discretized by unstructured flux-limiter schemes, central difference scheme is used for discretization of diffusive terms. Verification and validation cases have been undertaken to prove the accuracy and robustness of the numerical methods, including simulation of the Stefan problem, and film boiling on a cylindrical surface. Excellent agreement between numerical solutions against analytical solution and empirical correlations from the literature is reported.

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A Coupled Level Set and Volume of Fluid method with multi-directional advection algorithms for two-phase flows with and without phase change

Cited by 72 publications

References 53 publications

Comparison of Surface Tension Models for the Volume of Fluid Method

Comparison of Surface Tension Models for the Volume of Fluid Method

A coupled level set and volume of fluid method with a re-initialisation step suitable for unstructured meshes

Unstructured Level-Set Method For Saturated Liquid-Vapor Phase Change

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