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Preserving Fluid Sheets with Adaptively Sampled Anisotropic Particles

Ryoichi Ando, N. Thurey, R. Tsuruno
2012 IEEE Transactions on Visualization and Computer Graphics  
This paper presents a particle-based model for preserving fluid sheets of animated liquids with an adaptively sampled Fluid-Implicit-Particle (FLIP) method.  ...  Index Terms-Physically based modeling, liquid simulation, fluid-implicit-particle method, thin fluid sheets, adaptive sampling.  ...  With adaptive sampling, our thin sheet preservation sometimes finds small "gaps" between small particles and merged particles.  ... 
doi:10.1109/tvcg.2012.87 pmid:22411890 fatcat:irxqbsczyrh7lgko353qb4w4ra

Post-Processing Framework for Enhancing Liquid Surfaces in VFX Pipeline

Jong-Hyun Kim, Jaeho Im, Jung Lee
2021 IEEE Access  
SAMPLING BASED LIQUID SHEETS GENERATION 1) Classification of Thin Particles with Anisotropic Features The proposed method adds new liquid particles based on particle positions stored in the sequence data  ...  We will detect areas where liquid sheets should be preserved according to the flow and distribution of liquid particles, and improve the details of fluid surfaces by adding liquid particles on a sampling  ... 
doi:10.1109/access.2021.3091726 fatcat:soub2wurcrblhb646hyp473pyu

Reconstructing surfaces of particle-based fluids using anisotropic kernels

Jihun Yu, Greg Turk
2013 ACM Transactions on Graphics  
In this paper we present a novel surface reconstruction method for particle-based fluid simulators such as Smoothed Particle Hydrodynamics.  ...  In particle-based simulations, fluid surfaces are usually defined as a level set of an implicit function.  ...  Our method preserves thin fluid sheets, maintains sharp features, and produces smooth surfaces when the simulated fluid settles.  ... 
doi:10.1145/2421636.2421641 fatcat:zgrmsx6f65cljipon4xzos64yi

Reconstructing Surfaces of Particle-Based Fluids Using Anisotropic Kernels [article]

Jihun Yu, Greg Turk
2010 Proceedings of the 2004 ACM SIGGRAPH/Eurographics symposium on Computer animation - SCA '04  
In this paper we present a novel surface reconstruction method for particle-based fluid simulators such as Smoothed Particle Hydrodynamics.  ...  In particle-based simulations, fluid surfaces are usually defined as a level set of an implicit function.  ...  Our method preserves thin fluid sheets, maintains sharp features, and produces smooth surfaces when the simulated fluid settles.  ... 
doi:10.2312/sca/sca10/217-225 fatcat:xfg2ygiexfg2dllfhpuetxt3cq

Visual Simulation of Detailed Turbulent Water by Preserving the Thin Sheets of Fluid

Jong-Hyun Kim, Wook Kim, Young Kim, Jung Lee
2018 Symmetry  
When we perform particle-based water simulation, water particles are often increased dramatically because of particle splitting around breaking holes to maintain the thin fluid sheets.  ...  Thus, we propose a new fluid-implicit, particle-based framework for maintaining and representing the thin sheets and turbulent flows of water.  ...  They also extended this method to adaptively sample anisotropic particles and represent thin sheets more efficiently [21] . These methods well represent thin sheets of fluid.  ... 
doi:10.3390/sym10100502 fatcat:2abcsih65vdeheocdclcuiyzvy

A Robust Volume Conserving Method for Character-Water Interaction [article]

Minjae Lee, David Hyde, Kevin Li, Ronald Fedkiw
2019 arXiv   pre-print
We propose a novel volume conserving framework for character-water interaction, using a novel volume-of-fluid solver on a skinned tetrahedral mesh, enabling the high degree of the spatial adaptivity in  ...  The combination of conservation of fluid volume and a kinematically deforming skinned mesh allows us to robustly implement interesting effects such as adhesion, and anisotropic porosity.  ...  ACKNOWLEDGEMENTS The authors would like to acknowledge Ed Quigley for helping us with writing and compositing videos, and Winnie Lin for voice acting.  ... 
arXiv:1902.00801v1 fatcat:ppioarhrwvgkxjtaphrbhhykni

Scalable fluid simulation using anisotropic turbulence particles

Tobias Pfaff, Nils Thuerey, Jonathan Cohen, Sarah Tariq, Markus Gross
2010 ACM SIGGRAPH Asia 2010 papers on - SIGGRAPH ASIA '10  
For the simulation with 1M particles we achieve 15 frames per second on average, including rendering.  ...  We compute transport of turbulent energy using a complete two-equation k-ε model with accurate production terms that allows us to capture anisotropic turbulence effects, which integrate smoothly into the  ...  Therefore, we rely on guiding particles to preserve the local co- Sample U, S i j at particle position x 10: 11: // Energy dynamics 12: Compute turbulent viscosity: ν T ← C µ k 2 ε 13: Compute production  ... 
doi:10.1145/1882262.1866196 fatcat:wrkkd7f57bgtfeth5gqqlidafm

Scalable fluid simulation using anisotropic turbulence particles

Tobias Pfaff, Nils Thuerey, Jonathan Cohen, Sarah Tariq, Markus Gross
2010 ACM SIGGRAPH Asia 2010 papers on - SIGGRAPH ASIA '10  
For the simulation with 1M particles we achieve 15 frames per second on average, including rendering.  ...  We compute transport of turbulent energy using a complete two-equation k-ε model with accurate production terms that allows us to capture anisotropic turbulence effects, which integrate smoothly into the  ...  Therefore, we rely on guiding particles to preserve the local co- Sample U, S i j at particle position x 10: 11: // Energy dynamics 12: Compute turbulent viscosity: ν T ← C µ k 2 ε 13: Compute production  ... 
doi:10.1145/1866158.1866196 fatcat:l7xjv6i2pjecfp4h6ba6g2mqui

Scalable fluid simulation using anisotropic turbulence particles

Tobias Pfaff, Nils Thuerey, Jonathan Cohen, Sarah Tariq, Markus Gross
2010 ACM Transactions on Graphics  
For the simulation with 1M particles we achieve 15 frames per second on average, including rendering.  ...  We compute transport of turbulent energy using a complete two-equation k-ε model with accurate production terms that allows us to capture anisotropic turbulence effects, which integrate smoothly into the  ...  Therefore, we rely on guiding particles to preserve the local co- Sample U, S i j at particle position x 10: 11: // Energy dynamics 12: Compute turbulent viscosity: ν T ← C µ k 2 ε 13: Compute production  ... 
doi:10.1145/1882261.1866196 fatcat:uvkzriex2rg4jgjvdqwpsoaocy

Strategies for the preparation of polymer composites with complex alignment of the dispersed phase

Adriana Sierra-Romero, Biqiong Chen
2018 Nanocomposites  
However, the modification of particles with low magnetic susceptibilities with magnetic nanoparticles (i.e. iron oxide nanoparticles) has been proven to be a successful approach to broaden the capabilities  ...  The design and production of anisotropic composites and nanocomposites has become increasingly relevant in materials science and engineering because they provide an opportunity of enhancing and adapting  ...  Frictional energy (U g ) is calculated with Equation 5 [75, 101, 103] where g is the viscosity of the fluid, V p is the volume of the particle, d//dt (with u = 90 þ h) is the sheet angular frequency,  ... 
doi:10.1080/20550324.2018.1551830 fatcat:li4abcnttfgzlcjquslds3qppq

Direct Raytracing of Particle-based Fluid Surfaces Using Anisotropic Kernels [article]

Tim Biedert, Jan-Tobias Sohns, Simon Schröder, Jefferson Amstutz, Ingo Wald, Christoph Garth
2018 Eurographics Symposium on Parallel Graphics and Visualization  
We demonstrate a novel direct raytracing scheme for free surface intersection based on anisotropic smoothing kernels.  ...  Our versatile system is suitable for both high quality and interactive desktop rendering, scales reasonably well even with trivial parallelization and renders up to 170 million particles on 32 distributed  ...  [ATT12] employed this to determine and visualize thin fluid sheets in fluid simulations, while Macklin and Müller [MM13] combined it with the splatting approach of van der Laan et al.  ... 
doi:10.2312/pgv.20181090 dblp:conf/egpgv/BiedertSSAWG18 fatcat:ird2iyukcjhojgkjm2piohmc4a

Local Density Calibration for Position Based Fluids

Taihei Meno, Reiji Tsuruno
2017 International Journal of Asia Digital Art and Design Association  
In the conventional method, iterating few density calculations compresses the simulated fluid. To resolve this problem, we consider the particle density and the direction of the fluid flow.  ...  This method is based on the SPH(smoothed particle hydrodynamics) and realizes incompressibility by restricting the density. Furthermore, it reduces the calculation costs by allowing large time steps.  ...  Ando focuses on fluid surface and presents the method of make fluid sheet from adaptively sampled anisotropic particle [6] [7] [8] .  ... 
doi:10.20668/adada.21.1_41 fatcat:gq5owsrnnnba5if6wqj375rx6y

Adaptive Physically Based Models in Computer Graphics

P.-L. Manteaux, C. Wojtan, R. Narain, S. Redon, F. Faure, M.-P. Cani
2016 Computer graphics forum (Print)  
Models are classified according to the strategy they use for adaptation, from time-stepping and freezing techniques to geometric adaptivity in the form of structured grids, meshes, and particles.  ...  Applications range from fluids, through deformable bodies, to articulated solids.  ...  [ATW13] simulate liquid by combining adaptively-sized FLIP particles (bottom, front) with an adaptive tetrahedral mesh for the pressure solve (top, back). fluid sheets by creating additional particles.  ... 
doi:10.1111/cgf.12941 fatcat:vxw2g7hsffawvo7245vi6amipy

Consistent surface model for SPH-based fluid transport

Jens Orthmann, Hendrik Hochstetter, Julian Bader, Serkan Bayraktar, Andreas Kolb
2013 Proceedings of the 12th ACM SIGGRAPH/Eurographics Symposium on Computer Animation - SCA '13  
Abstract Surface effects play an essential role in fluid simulations.  ...  In this paper we introduce a conservative Lagrangian formulation of surface effects based upon incompressible smoothed particle hydrodynamics (SPH).  ...  While (hybrid) grid-based approaches such as FLIP [Ando et al. 2012] or PLS [Losasso et al. 2008 ] are able to preserve thin fluid sheets, they require a re-sampling between particle and grid, thus  ... 
doi:10.1145/2485895.2485902 dblp:conf/sca/OrthmannHBBK13 fatcat:i3wvvlxdtzenznrr64lanvdbym

A Unified Anisotropic Particle-Based Ocean Wave Simulation Framework for Marine Simulator Visual System

Haijiang Li, Hongxiang Ren, Chang Wang, Shaoyang Qiu
2020 IEEE Access  
The problem of particle deformation near the boundary is solved by our piecewise correction function, with the sharp features and anisotropy maintained.  ...  In this paper, we propose a unified anisotropic particle-based ocean wave simulation framework for marine simulator.  ...  In SPH framework, we habitually consider sampling the surrounding air, and treating air particles as another fluid particles with different rest density.  ... 
doi:10.1109/access.2020.3008006 fatcat:cx4ze32pnvdelii5gjf67wsyim
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