Solid-fluid interaction with surface-tension-dominant contact

Ruan, Liangwang; Liu, Jinyuan; Zhu, Bo; Sueda, Shinjiro; Wang, Bin; Chen, Baoquan

doi:10.1145/3450626.3459862

Cited by 12 publications

(1 citation statement)

References 54 publications

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“…The volume-of-fluid (VOF) representation was also leveraged to design monolithic solvers Batty 2020, 2022] for fluid-solid coupling, but such solvers have not been extended yet to multiphase flows and are currently rather inefficient. The lack of versatile and fast coupling techniques have also spawned a number of specialized solvers: [Ruan et al 2021] proposed a three-way coupling method via a hybrid Eulerian-Lagrangian framework to simulate large surface tension flow in which liquid and solid are coupled by a Lagrangian membrane; [Xiong et al 2022] proposed a Clebsch method to simulate free-surface vortical flow; ] introduced a Lagrangian model for viscous solid-fluid interaction; and position-based dynamics (PBD) for surface tension [Xing et al 2022] was even proposed, but it does not support turbulent multiphase flows.…”

Section: Single-phase and Free-surface Solversmentioning

confidence: 99%

Fluid-Solid Coupling in Kinetic Two-Phase Flow Simulation

Desbrun

2023

ACM Trans. Graph.

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Real-life flows exhibit complex and visually appealing behaviors such as bubbling, splashing, glugging and wetting that simulation techniques in graphics have attempted to capture for years. While early approaches were not capable of reproducing multiphase flow phenomena due to their excessive numerical viscosity and low accuracy, kinetic solvers based on the lattice Boltzmann method have recently demonstrated the ability to simulate water-air interaction at high Reynolds numbers in a massively-parallel fashion. However, robust and accurate handling of fluid-solid coupling has remained elusive: be it for CG or CFD solvers, as soon as the motion of immersed objects is too fast or too sudden, pressures near boundaries and interfacial forces exhibit spurious oscillations leading to blowups. Built upon a phase-field and velocity-distribution based lattice-Boltzmann solver for multiphase flows, this paper spells out a series of numerical improvements in momentum exchange, interfacial forces, and two-way coupling to drastically reduce these typical artifacts, thus significantly expanding the types of fluid-solid coupling that we can efficiently simulate. We highlight the numerical benefits of our solver through various challenging simulation results, including comparisons to previous work and real footage.

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Section: Single-phase and Free-surface Solversmentioning

confidence: 99%

Fluid-Solid Coupling in Kinetic Two-Phase Flow Simulation

Desbrun

2023

ACM Trans. Graph.

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Efficient angiography simulation for complex vessels

Huang

Zhou

Zeng

et al. 2022

Computer Animation & Virtual

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Angiography simulation is a critical step in virtual interventional surgery. However, the blood vessels are always complex and irregular, which poses a significant challenge to the accuracy and efficiency of simulation. In this paper, we present a novel method to simulate contrast media propagation, which can efficiently and accurately deal with various complex vascular structures and the coupling between blood and contrast media. Our method represents the vascular structures by signed distance functions and to impose boundary conditions, and then we compute the boundary volume by Gauss-Kronrod quadrature, which yields more accurate results even in complex vessels. Furthermore, we improve the simulation's initialization efficiency and real-time force computational efficiency by precomputing the boundary volume values throughout the vascular structure and saving them to a volume map, which can be queried very efficiently during runtime. Moreover, we add term to the multiple-fluid model to handle the vascular viscosity, which achieves a more realistic effect. Experiments show that our method obtains more smooth and accurate particle states, and significantly improves initialization efficiency. Finally, we invited 12 clinicians to evaluate the algorithm and verify the clinical value of our algorithm.

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Dual-mechanism surface tension model for SPH-based simulation

Xiong,

Wang,

et al. 2024

Vis Comput

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Solid-fluid interaction with surface-tension-dominant contact

Cited by 12 publications

References 54 publications

Fluid-Solid Coupling in Kinetic Two-Phase Flow Simulation

Fluid-Solid Coupling in Kinetic Two-Phase Flow Simulation

Efficient angiography simulation for complex vessels

Dual-mechanism surface tension model for SPH-based simulation

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