Adaptive mesh refinement method for the reduction of computational costs while simulating slug flow

Potgieter, Jarryd; Lombaard, L.; Hannay, Jo Erskine; Moghimi, M.A.; Valluri, Prashant; Meyer, J.

doi:10.1016/j.icheatmasstransfer.2021.105702

Cited by 5 publications

(2 citation statements)

References 29 publications

(37 reference statements)

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“…The model is complemented by an adaptive mesh refinement for resolving the near-interface region specifically, which substantially lowers computational costs. A hanging node dynamic mesh adaptation technique is employed because of its compatibility with the level-set function. − …”

Section: Model Formulationmentioning

confidence: 99%

“…The major results of simulations were presented as 1D diagrams, and flow visualization was demonstrated. Recently, the CLSVOF method has also been widely used to model droplets in turbulent flows. , An adaptive mesh refinement (AMR) applied to VOF-based methods is computationally efficient for simulating droplet coalescence and breakup in different multiphase flows, e.g., see the referred works: , , , and .…”

Section: Introductionmentioning

confidence: 99%

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Effect of Microchannel Curvature on Water Droplet Dynamics in a Highly Viscous Flow

Shayunusov,

Eskin,

Zeng

et al. 2024

Ind. Eng. Chem. Res.

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This work is dedicated to the three-dimensional (3D) computational fluid dynamics (CFD) simulations of the microchannel curvature effect on water droplet dynamics in a highly viscous flow. Dynamics of 10 μm water droplets in bitumen medium flowing through U-shaped tubes of square-cross-section and of h = 40 μm width is investigated. The channel curvature radius R varies from 0.25h to 2h and the inlet Reynolds number Re in from 2 to 10. The coupled level-set and volume of fluid (CLSVOF) methods are combined with the adaptive mesh refinement (AMR) technique to accurately simulate a droplet flow regime. Different geometry performances are compared using onedimensional (1D) diagrams for integral flow characteristics and 3D visualization of the liquid−liquid interface. Flows in the vicinities of the convex and concave walls are found to control droplet deformation and breakup patterns. The results reveal that at Re in ≥ 7, the flow causes droplet breakup and temporary coalescence associated with the formation of long worm-shaped droplets. Differently positioned droplets for each Re in , bend radius, and interfacial tension cases are assessed individually. As a result, a droplet behavior map is developed based on local capillary and Reynolds numbers.

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Section: Model Formulationmentioning

confidence: 99%