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About the 3D Lagrangian bubbles CFD Simulation Project
This simulation shows a 3D acoustic bubble-screen problem computed with NumericalAI (https://numericalai.net/), where a planar ultrasonic pulse propagates through water and interacts with a dense cloud of Lagrangian bubbles. The carrier phase (water) is solved on an Eulerian grid using a stiffened-gas equation of state (with viscosity enabled), while individual bubbles are tracked in a Lagrangian framework using a Keller–Miksis-type model with coupled heat and mass transfer. The image visualizes the instantaneous void fraction field (gas volume fraction) as a 3D iso-surface/contour rendering, revealing how the initially distributed bubble population organizes into a complex, highly nonuniform “screen” as the wave passes. Regions of elevated void fraction indicate bubble clustering and local amplification of compressibility, while lower-void regions correspond to bubble depletion and shadowing. The fragmented, corrugated structure highlights strong spatial variability in bubble response and the resulting scattering/attenuation of the acoustic field key mechanisms behind bubble-screen formation and acoustic shielding in bubbly liquids.
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January 24th, 2026 Uploaded
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Simulation, Lagrangian NumericalAI 3D Lagrangian Bubbles CFD Si... 3D Lagrangian Bubbles Lagrangian Bubbles
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