ABSTRACT
Combustion workflows for the Avatar sequel(s) were built from the ground up, aiming at physical plausibility and predictability, facilitated by careful modeling from molecular-level chemical reactions to large-scale thermodynamics. Onset references for torches, flame bars, and burning Marui villages guided development work across simulation, look development, and rendering. Using chemical formulas and properties of real-world fuels, and tuning pre-mixing with oxygen, allowed faithfully capturing a number of desirable effects, such as “oxygen starvation” and flickering of thin flames, without the need for additional artistic variables. Using our new solver created a consistent look across sequences at different scales, allowing artists to replace library fires with hero solves when interaction or a particular behavior was required.
Supplemental Material
Available for Download
- Gerardo Aguilera and John Johansson. 2019. Avengers: Endgame, a New Approach for Combustion Simulations. In ACM SIGGRAPH 2019 Talks (Los Angeles, California) (SIGGRAPH ’19). Association for Computing Machinery, New York, NY, USA, Article 39, 2 pages. https://doi.org/10.1145/3306307.3328203Google ScholarDigital Library
- Steve Lesser, Alexey Stomakhin, Gilles Daviet, Joel Wretborn, John Edholm, Noh-Hoon Lee, Eston Schweickart, Xiao Zhai, Sean Flynn, and Andrew Moffat. 2022. Loki: A Unified Multiphysics Simulation Framework for Production. ACM Trans. Graph. 41, 4, Article 50 (jul 2022), 20 pages. https://doi.org/10.1145/3528223.3530058Google ScholarDigital Library
- Michael B. Nielsen, Morten Bojsen-Hansen, Konstantinos Stamatelos, and Robert Bridson. 2022. Physics-Based Combustion Simulation. ACM Trans. Graph. 41, 5, Article 176 (may 2022), 21 pages. https://doi.org/10.1145/3526213Google ScholarDigital Library
Index Terms
- Fire and Explosions in Avatar: The Way of Water
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