Face-based Volume-of-Fluid interface positioning in arbitrary polyhedra

Kromer, Johannes; Bothe, Dieter

doi:10.1016/j.jcp.2021.110776

Cited by 9 publications

(1 citation statement)

References 18 publications

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“…On average, only one to two truncations are required to position the plane, outperforming existing methods. Further information concerning the performance assessment for an extensive set of polyhedrons, volume fractions and normal orientations can be found in [17], along with comprehensive description of the algorithm. Ongoing research aims at embedding the developed volume computation into a minimization-based scheme to improve the estimation of the normal fields n from volume fraction data f .…”

Section: Efficient Interface Reconstructionmentioning

confidence: 99%

Modelling and Numerical Simulation of Binary Droplet Collisions Under Extreme Conditions

Johanna

Kromer

Liu

et al. 2022

Fluid Mechanics and Its Applications

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The complexity of binary droplet collisions strongly increases in case of immiscible liquids with the occurrence of triple lines or for high energetic collisions, where strong rim instabilities lead to the spattering of satellite droplets. To cope with such cases, the Volume of Fluid method is extended by an efficient interface reconstruction, also applicable to multi-material cells of arbitrary configuration, as well as an enhanced continuous surface stress model for accurate surface force computations, also applicable to thin films. For collisions of fully wetting liquids, excellent agreement to experimental data is achieved in different collision regimes. High-resolution simulations predict droplet collisions in the spattering regime and provide detailed insights into the evolution of the rim instability. Another challenge is the numerical prediction of the collision outcome in the bouncing or coalescence region, where the rarefied gas dynamics in the thin gas film determines the collision result. To this end, an important step forward became possible by modelling the pressure in the gas film. With the introduction of an interior collision plane within the flow domain, it is now possible to simulate droplet collisions with gas film thickness reaching the physically relevant length scale.

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Section: Efficient Interface Reconstructionmentioning

confidence: 99%