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- research-articleJuly 2024
Scintilla: Simulating Combustible Vegetation for Wildfires
- Andrzej Kokosza,
- Helge Wrede,
- Daniel Gonzalez Esparza,
- Milosz Makowski,
- Daoming Liu,
- Dominik L. Michels,
- Soren Pirk,
- Wojtek Palubicki
ACM Transactions on Graphics (TOG), Volume 43, Issue 4Article No.: 70, Pages 1–21https://doi.org/10.1145/3658192Wildfires are a complex physical phenomenon that involves the combustion of a variety of flammable materials ranging from fallen leaves and dried twigs to decomposing organic material and living flora. All these materials can potentially act as fuel with ...
- research-articleMay 2024
Towards accelerating particle‐resolved direct numerical simulation with neural operators
- Mohammad Atif,
- Vanessa López‐Marrero,
- Tao Zhang,
- Abdullah Al Muti Sharfuddin,
- Kwangmin Yu,
- Jiaqi Yang,
- Fan Yang,
- Foluso Ladeinde,
- Yangang Liu,
- Meifeng Lin,
- Lingda Li
AbstractWe present our ongoing work aimed at accelerating a particle‐resolved direct numerical simulation model designed to study aerosol–cloud–turbulence interactions. The dynamical model consists of two main components—a set of fluid dynamics ...
- research-articleJanuary 2024
Integrated Thermodynamic Analysis and Channel Variation Effects on Solid Oxide Electrolysis for Efficient Hydrogen Generation
Procedia Computer Science (PROCS), Volume 236, Issue CPages 152–159https://doi.org/10.1016/j.procs.2024.05.016AbstractThis study delves into the intricate dynamics of Solid Oxide Electrolysis Cells (SOECs) using comprehensive simulation and analysis. By exploring the effects of temperature, pressure, and geometrical variations, we reveal valuable insights into ...
- research-articleJuly 2023
Fluid Cohomology
ACM Transactions on Graphics (TOG), Volume 42, Issue 4Article No.: 126, Pages 1–25https://doi.org/10.1145/3592402The vorticity-streamfunction formulation for incompressible inviscid fluids is the basis for many fluid simulation methods in computer graphics, including vortex methods, streamfunction solvers, spectral methods, and Monte Carlo methods. We point out ...
- research-articleFebruary 2023
Geppetteau: Enabling haptic perceptions of virtual fluids in various vessel profiles using a string-driven haptic interface
TEI '23: Proceedings of the Seventeenth International Conference on Tangible, Embedded, and Embodied InteractionArticle No.: 14, Pages 1–14https://doi.org/10.1145/3569009.3572745What we feel from handling liquids in vessels produces unmistakably fluid tactile sensations. These stimulate essential perceptions in home, laboratory, or industrial contexts. Feeling fluid interactions from virtual fluids would similarly enrich ...
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- research-articleNovember 2022
Hidden Degrees of Freedom in Implicit Vortex Filaments
ACM Transactions on Graphics (TOG), Volume 41, Issue 6Article No.: 241, Pages 1–14https://doi.org/10.1145/3550454.3555459This paper presents a new representation of curve dynamics, with applications to vortex filaments in fluid dynamics. Instead of representing these filaments with explicit curve geometry and Lagrangian equations of motion, we represent curves implicitly ...
- demonstrationOctober 2022
Demonstration of Geppetteau: Enabling haptic perceptions of virtual fluids in various vessel profiles using a string-driven haptic interface
UIST '22 Adjunct: Adjunct Proceedings of the 35th Annual ACM Symposium on User Interface Software and TechnologyArticle No.: 55, Pages 1–3https://doi.org/10.1145/3526114.3558611Liquids sloshing around in vessels produce unique unmistakable tactile sensations of handling fluids in daily life, laboratory environments, and industrial contexts. Providing nuanced congruent tactile sensations would enrich interactions of handling ...
- research-articleJuly 2022
Ecoclimates: climate-response modeling of vegetation
ACM Transactions on Graphics (TOG), Volume 41, Issue 4Article No.: 155, Pages 1–19https://doi.org/10.1145/3528223.3530146One of the greatest challenges to mankind is understanding the underlying principles of climate change. Over the last years, the role of forests in climate change has received increased attention. This is due to the observation that not only the ...
- research-articleJuly 2022
Covector fluids
ACM Transactions on Graphics (TOG), Volume 41, Issue 4Article No.: 113, Pages 1–16https://doi.org/10.1145/3528223.3530120The animation of delicate vortical structures of gas and liquids has been of great interest in computer graphics. However, common velocity-based fluid solvers can damp the vortical flow, while vorticity-based fluid solvers suffer from performance ...
- research-articleJuly 2022
A fast unsmoothed aggregation algebraic multigrid framework for the large-scale simulation of incompressible flow
ACM Transactions on Graphics (TOG), Volume 41, Issue 4Article No.: 49, Pages 1–18https://doi.org/10.1145/3528223.3530109Multigrid methods are quite efficient for solving the pressure Poisson equation in simulations of incompressible flow. However, for viscous liquids, geometric multigrid turned out to be less efficient for solving the variational viscosity equation. In ...
- research-articleApril 2023
Simulations of CO2 Cloud Dispersion in the Lower Atmosphere Using Two Fast Models
Computational Mathematics and Modeling (SPCMM), Volume 33, Issue 3Pages 300–309https://doi.org/10.1007/s10598-023-09573-6We consider two fast mathematical models of carbon dioxide dispersion over an uneven topography. The application of these models is effective for the monitoring of the consequences of industrial accidents involving the emission of carbon dioxide from ...
- research-articleDecember 2021
Weatherscapes: nowcasting heat transfer and water continuity
- Jorge Alejandro Amador Herrera,
- Torsten Hädrich,
- Wojtek Pałubicki,
- Daniel T. Banuti,
- Sören Pirk,
- Dominik L. Michels
ACM Transactions on Graphics (TOG), Volume 40, Issue 6Article No.: 204, Pages 1–19https://doi.org/10.1145/3478513.3480532Due to the complex interplay of various meteorological phenomena, simulating weather is a challenging and open research problem. In this contribution, we propose a novel physics-based model that enables simulating weather at interactive rates. By ...
- research-articleDecember 2021
Ships, splashes, and waves on a vast ocean
ACM Transactions on Graphics (TOG), Volume 40, Issue 6Article No.: 203, Pages 1–15https://doi.org/10.1145/3478513.3480495The simulation of large open water surface is challenging using a uniform volumetric discretization of the Navier-Stokes equations. Simulating water splashes near moving objects, which height field methods for water waves cannot capture, necessitates ...
- research-articleJuly 2021
Fire in paradise: mesoscale simulation of wildfires
ACM Transactions on Graphics (TOG), Volume 40, Issue 4Article No.: 163, Pages 1–15https://doi.org/10.1145/3450626.3459954Resulting from changing climatic conditions, wildfires have become an existential threat across various countries around the world. The complex dynamics paired with their often rapid progression renders wildfires an often disastrous natural phenomenon ...
- posterJuly 2021
Unit-aware multi-objective genetic programming for the prediction of the stokes flow around a sphere
GECCO '21: Proceedings of the Genetic and Evolutionary Computation Conference CompanionPages 327–328https://doi.org/10.1145/3449726.3459408In this article we apply a unit-aware Genetic Programming (GP) approach to solve a problem from the area of fluid-dynamics: The Stokes flow around a sphere. We formulate 6 test instances with different complexities and explore the capabilities of single-...
- research-articleSeptember 2021
An Application of Generative Adversarial Networks for Robust Inference in Computational Fluid Dynamics
ICISDM '21: Proceedings of the 2021 5th International Conference on Information System and Data MiningPages 74–83https://doi.org/10.1145/3471287.3471304In this paper we propose a robust learning pipeline for inference in computational fluid dynamics (CFD) systems in the presence of faulty sensor data. The standard methods for handling faulty sensor data involve outlier detection techniques which assume ...
- research-articleJanuary 2021
Conservation Laws for Free-Boundary Fluid Layers
SIAM Journal on Applied Mathematics (SJAM), Volume 81, Issue 5Pages 2007–2032https://doi.org/10.1137/20M135217XTime-dependent models of fluid motion in thin layers, subject to signed source terms, represent important subproblems within climate dynamics. Examples include ice sheets, sea ice, and even shallow oceans and lakes. We address these problems as discrete-...
- research-articleNovember 2020
Stormscapes: simulating cloud dynamics in the now
ACM Transactions on Graphics (TOG), Volume 39, Issue 6Article No.: 175, Pages 1–16https://doi.org/10.1145/3414685.3417801The complex interplay of a number of physical and meteorological phenomena makes simulating clouds a challenging and open research problem. We explore a physically accurate model for simulating clouds and the dynamics of their transitions. We propose ...
- research-articleAugust 2020
A model for soap film dynamics with evolving thickness
ACM Transactions on Graphics (TOG), Volume 39, Issue 4Article No.: 31, Pages 31:1–31:11https://doi.org/10.1145/3386569.3392405Previous 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 ...
- research-articleAugust 2020
Chemomechanical simulation of soap film flow on spherical bubbles
ACM Transactions on Graphics (TOG), Volume 39, Issue 4Article No.: 41, Pages 41:1–41:13https://doi.org/10.1145/3386569.3392094Soap bubbles are widely appreciated for their fragile nature and their colorful appearance. The natural sciences and, in extension, computer graphics, have comprehensively studied the mechanical behavior of films and foams, as well as the optical ...