article published yes Sadashige Ishida author 6F7C4B96-A8E9-11E9-A7CA-09ECE56974250000-0002-3121-3100 Peter Synak author 331776E2-F248-11E8-B48F-1D18A9856A87 Fumiya Narita author Toshiya Hachisuka author Christopher J Wojtan author 3C61F1D2-F248-11E8-B48F-1D18A9856A870000-0001-6646-5546 ChWo department Big Splash: Efficient Simulation of Natural Phenomena at Extremely Large Scales project Previous research on animations of soap bubbles, films, and foams largely focuses on the motion and geometric shape of the bubble surface. These works neglect the evolution of the bubble’s thickness, which is normally responsible for visual phenomena like surface vortices, Newton’s interference patterns, capillary waves, and deformation-dependent rupturing of films in a foam. In this paper, we model these natural phenomena by introducing the film thickness as a reduced degree of freedom in the Navier-Stokes equations and deriving their equations of motion. We discretize the equations on a nonmanifold triangle mesh surface and couple it to an existing bubble solver. In doing so, we also introduce an incompressible fluid solver for 2.5D films and a novel advection algorithm for convecting fields across non-manifold surface junctions. Our simulations enhance state-of-the-art bubble solvers with additional effects caused by convection, rippling, draining, and evaporation of the thin film. https://research-explorer.ista.ac.at/download/8384/8795/2020_soapfilm_submitted.pdf application/pdfno Association for Computing Machinery2020 eng 0730-0301 1557-7368 00058370030000410.1145/3386569.3392405 394 https://research-explorer.ista.ac.at/record/19630 Ishida S, Synak P, Narita F, Hachisuka T, Wojtan C. 2020. A model for soap film dynamics with evolving thickness. ACM Transactions on Graphics. 39(4), 31. Ishida S, Synak P, Narita F, Hachisuka T, Wojtan C. A model for soap film dynamics with evolving thickness. <i>ACM Transactions on Graphics</i>. 2020;39(4). doi:<a href="https://doi.org/10.1145/3386569.3392405">10.1145/3386569.3392405</a> S. Ishida, P. Synak, F. Narita, T. Hachisuka, C. Wojtan, ACM Transactions on Graphics 39 (2020). Ishida, S., Synak, P., Narita, F., Hachisuka, T., &#38; Wojtan, C. (2020). A model for soap film dynamics with evolving thickness. <i>ACM Transactions on Graphics</i>. Association for Computing Machinery. <a href="https://doi.org/10.1145/3386569.3392405">https://doi.org/10.1145/3386569.3392405</a> Ishida, Sadashige, Peter Synak, Fumiya Narita, Toshiya Hachisuka, and Chris Wojtan. “A Model for Soap Film Dynamics with Evolving Thickness.” <i>ACM Transactions on Graphics</i>. Association for Computing Machinery, 2020. <a href="https://doi.org/10.1145/3386569.3392405">https://doi.org/10.1145/3386569.3392405</a>. Ishida, Sadashige, et al. “A Model for Soap Film Dynamics with Evolving Thickness.” <i>ACM Transactions on Graphics</i>, vol. 39, no. 4, 31, Association for Computing Machinery, 2020, doi:<a href="https://doi.org/10.1145/3386569.3392405">10.1145/3386569.3392405</a>. S. Ishida, P. Synak, F. Narita, T. Hachisuka, and C. Wojtan, “A model for soap film dynamics with evolving thickness,” <i>ACM Transactions on Graphics</i>, vol. 39, no. 4. Association for Computing Machinery, 2020. 83842020-09-13T22:01:18Z2026-04-16T08:29:36Z