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- W4310443813 abstract "We present a novel Monte Carlo-based fluid simulation approach capable of pointwise and stochastic estimation of fluid motion. Drawing on the Feynman-Kac representation of the vorticity transport equation, we propose a recursive Monte Carlo estimator of the Biot-Savart law and extend it with a stream function formulation that allows us to treat free-slip boundary conditions using a Walk-on-Spheres algorithm. Inspired by the Monte Carlo literature in rendering, we design and compare variance reduction schemes suited to a fluid simulation context for the first time, show its applicability to complex boundary settings, and detail a simple and practical implementation with temporal grid caching. We validate the correctness of our approach via quantitative and qualitative evaluations - across a range of settings and domain geometries - and thoroughly explore its parameters' design space. Finally, we provide an in-depth discussion of several axes of future work building on this new numerical simulation modality." @default.
- W4310443813 created "2022-12-10" @default.
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- W4310443813 date "2022-11-30" @default.
- W4310443813 modified "2023-09-27" @default.
- W4310443813 title "A Monte Carlo Method for Fluid Simulation" @default.
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- W4310443813 doi "https://doi.org/10.1145/3550454.3555450" @default.
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