Efficient three-material PLIC interface positioning on unstructured polyhedral meshes

Kromer, Johannes; Johanna, Potyka,; Schulte, Kathrin; Bothe, Dieter

doi:10.48550/arxiv.2105.08972

Cited by 2 publications

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“…An enhanced continuous surface stress model was introduced for an accurate surface force computation, which is also applicable to thin films [35]. Moreover, a new face-based interface reconstruction has been developed and extended to the case with appearance of triple lines [19]. For collisions of fully wetting liquids, excellent agreement with experimental data was achieved in different collision regimes; an example is shown in Fig.…”

Section: This Volume)mentioning

confidence: 93%

Collaborative Research on Droplet Dynamics Under Extreme Ambient Conditions

Schulte

Dreizler

Munz

et al. 2022

Fluid Mechanics and Its Applications

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A fundamental understanding of droplet dynamics is important for the prediction and optimization of technical systems involving drops and sprays. The Collaborative Research Center (CRC) SFB-TRR 75 was established in January 2010 to focus on the dynamics of basic drop processes, and in particular on processes involving extreme ambient conditions, for example near thermodynamic critical conditions, at very low temperatures, under the influence of strong electric fields, or in situations involving extreme gradients of the boundary conditions. The goal of the CRC was to gain a profound physical understanding of the essential processes, which is the basis for new analytical and numerical descriptions as well as for improved predictive capabilities. This joint initiative involved scientists at the University of Stuttgart, the TU Darmstadt, the TU Berlin, and the German Aerospace Center (DLR) in Lampoldshausen. This first chapter provides a brief overview of the overall structure of this CRC as well as a summary of some selected scientific achievements of the subprojects involved. For further details the reader is referred to the subsequent chapters of this book related to the individual subprojects.

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Section: This Volume)mentioning

confidence: 93%

Collaborative Research on Droplet Dynamics Under Extreme Ambient Conditions

Schulte

Dreizler

Munz

et al. 2022

Fluid Mechanics and Its Applications

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“…The full mathematical details can be found in [18]. In both cases, the derivatives of the volume function, which are exploited in a higher-order root finding scheme, can be obtained at negligible cost.…”

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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Efficient three-material PLIC interface positioning on unstructured polyhedral meshes

Cited by 2 publications

References 0 publications

Collaborative Research on Droplet Dynamics Under Extreme Ambient Conditions

Collaborative Research on Droplet Dynamics Under Extreme Ambient Conditions

Modelling and Numerical Simulation of Binary Droplet Collisions Under Extreme Conditions

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