BEGIN:VCALENDAR VERSION:2.0 PRODID:Linklings LLC BEGIN:VTIMEZONE TZID:Asia/Tokyo X-LIC-LOCATION:Asia/Tokyo BEGIN:STANDARD TZOFFSETFROM:+0900 TZOFFSETTO:+0900 TZNAME:JST DTSTART:18871231T000000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20250110T023313Z LOCATION:Hall B7 (1)\, B Block\, Level 7 DTSTART;TZID=Asia/Tokyo:20241206T094600 DTEND;TZID=Asia/Tokyo:20241206T095800 UID:siggraphasia_SIGGRAPH Asia 2024_sess141_papers_617@linklings.com SUMMARY:Neural Implicit Reduced Fluid Simulation DESCRIPTION:Technical Papers\n\nYuanyuan Tao (McGill University, Huawei Ca nada); Ivan Puhachov (Université de Montréal); and Derek Nowrouzezahrai an d Paul Kry (McGill University)\n\nHigh-fidelity simulation of fluid dynami cs is challenging because of the high dimensional state data needed to cap ture fine details and the large computational cost associated with advanci ng the system in time. We present neural implicit reduced fluid simulation (NIRFS), a reduced fluid simulation technique that combines an implicit n eural representation of fluid shapes and a neural ordinary differential eq uation to model the dynamics of fluid in the reduced latent space. The lat ent trajectories are computed at very little cost in comparison to simulat ions for training, while preserving fine physical details. We show that th is approach can work well, capturing the shapes and dynamics involved in a variety of scenarios with constrained initial conditions, e.g., droplet-d roplet collisions, crown splashes, and fluid slosh in a container. In each scenario, we learn the latent implicit representation of fluid shapes wit h a deep-network signed distance function, as well as the energy function and parameters of a damped Hamiltonian system, which helps guarantee desir able properties of the latent dynamics. To ensure that latent shape repres entations form smooth and physically meaningful trajectories, we simultane ously learn the latent representation and dynamics. We evaluate novel simu lations for conservation of volume and momentum conservation, discuss desi gn decisions, and demonstrate an application of our method to fluid contro l.\n\nRegistration Category: Full Access, Full Access Supporter\n\nLanguag e Format: English Language\n\nSession Chair: Sheldon Andrews (École de tec hnologie supérieure (ÉTS)) URL:https://asia.siggraph.org/2024/program/?id=papers_617&sess=sess141 END:VEVENT END:VCALENDAR