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Robust Simulation of Sparsely Sampled Thin Features in SPH-Based Free Surface Flows

Xiaowei He, Huamin Wang, Fengjun Zhang, Hongan Wang, Guoping Wang, Kun Zhou
2014 ACM Transactions on Graphics  
However, sparsely sampled thin features are difficult to simulate in SPH-based free surface flows, due to a number of robustness and stability issues.  ...  Robust simulation of sparsely sampled thin features in SPH-based free surface flows. ACM Trans. Graph. 34, 1, Article 7 (November 2014) 9 pages.  ...  In fact, SPH is highly sensitive to the lack of particles 7:2 • X. He et al. around liquid surfaces in free surface flows, which makes sparsely sampled thin features even harder to simulate.  ... 
doi:10.1145/2682630 fatcat:no564vnhine2jncdpuuepc3lw4

Fluid Simulation by the Smoothed Particle Hydrodynamics Method: A Survey

T. Weaver, Z. Xiao
2016 Proceedings of the 11th Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications  
As a truly mesh-free particle method based upon the Lagrangian formulation, SPH has been applied to a variety of different areas in science, computer graphics and engineering.  ...  Various aspects of the method will be discussed: Similarities, advantages and disadvantages in comparison to Eulerian methods; Fundamentals of the SPH method; The use of SPH in fluid simulation; The current  ...  Apart from the robustness and stability that SPH can offer for most of the simulations, to simulate sparsely sampled thin features in free surface flows e.g. splashing, SPH might encounter difficulty towards  ... 
doi:10.5220/0005673702130223 dblp:conf/grapp/WeaverX16 fatcat:vqizsk6ifjbgzb4qqfhhpgjtri

Hydraulic Erosion Using Smoothed Particle Hydrodynamics

P. Krištof, B. Beneš, J. Křivánek, O. Št'ava
2009 Computer graphics forum (Print)  
We propose a new donor-acceptor scheme for the explicit advection in SPH.  ...  Our results show that this particle-based method is efficient for the erosion of dense, large, and sparse fluid. Our implementation provides interactive results for scenes with up to 25,000 particles.  ...  This work has been supported by the Ministry of Education, Youth and Sports of the Czech Republic under the research program LC-06008 (Center for Computer Graphics). J.  ... 
doi:10.1111/j.1467-8659.2009.01361.x fatcat:7ubvbmwgxjbjtcch7jfzdsrv4a

Narrow Band FLIP for Liquid Simulations

Florian Ferstl, Ryoichi Ando, Chris Wojtan, Rüdiger Westermann, Nils Thuerey
2016 Computer graphics forum (Print)  
features near the liquid surface.  ...  Unfortunately, FLIP simulations can be computationally expensive, because they require a dense sampling of particles to fill the entire liquid volume.  ...  Thin liquid features are completely sampled with particles, and are always treated correctly.  ... 
doi:10.1111/cgf.12825 fatcat:qs3e2oax7nasdkm6atlbcn37ee

An Overview of Surface Tracking and Representation in Fluid Simulation

Listy Stephen, Anoop Jose
2015 International Journal of Advanced Computer Science and Applications  
There are number of mechanisms evolved with the advent of both hardware and software technologies. Most of the fluid simulation methods described with or without a clear surface representation.  ...  Realism in fluid animation can be achieve with physics based techniques and is the best among other approaches. Now, this area constitutes hot researches.  ...  ACKNOWLEDGMENT The authors would like to thank the reviewers for their useful suggestions to improve the earlier drafts of this manuscript and also thank to Jasmine Hydrose, National Institute of technology  ... 
doi:10.14569/ijacsa.2015.061137 fatcat:w6yyltapfbawpi26jqk4a2lkjy

Smoke Sheets for Graph-Structured Vortex Filaments [article]

Alfred Barnat, Nancy S. Pollard
2012 Proceedings of the 2004 ACM SIGGRAPH/Eurographics symposium on Computer animation - SCA '04  
In an attempt to overcome the diffusion inherent to Eulerian grid-based simulators, a technique has recently been developed which represents velocity using a sparse set of vortex filaments.  ...  Smoke is one of the core phenomena which fluid simulation techniques in computer graphics have attempted to capture.  ...  Each technique degrades well in quality with reduced complexity and, more importantly, the complexity depends only on the number of features currently being simulated, not the total capacity of the simulation  ... 
doi:10.2312/sca/sca12/077-086 fatcat:dylp3ytv4reenpvi3cwvoqoedy

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)  
One of the major challenges in physically-based modeling is making simulations efficient. Adaptive models provide an essential solution to these efficiency goals.  ...  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.  ...  [BBB10] use a uniform 39 background lattice and introduce additional pressure sam-40 ples along both sides of the free surface to ensure that all 41 surface features are resolved.  ... 
doi:10.1111/cgf.12941 fatcat:vxw2g7hsffawvo7245vi6amipy

Accurate Viscous Free Surfaces for Buckling, Coiling, and Rotating Liquids [article]

Christopher Batty, Robert Bridson
2008 Proceedings of the 2004 ACM SIGGRAPH/Eurographics symposium on Computer animation - SCA '04  
We present a fully implicit Eulerian technique for simulating free surface viscous liquids which eliminates artifacts in previous approaches, efficiently supports variable viscosity, and allows the simulation  ...  of more compelling viscous behaviour than previously achieved in graphics.  ...  Acknowledgements This work was supported in part by a grant from the Natural Sciences and Engineering Research Council of Canada.  ... 
doi:10.2312/sca/sca08/219-228 fatcat:jcltaomu6vfy3om6ggkwc36pci

A multiscale approach to mesh-based surface tension flows

Nils Thürey, Chris Wojtan, Markus Gross, Greg Turk
2010 ACM Transactions on Graphics  
Our method consists of two simulation layers: the first layer is an Eulerian method for simulating surface tension forces that is free from typical strict time step constraints.  ...  For the shown simulation, our method requires only 22.3 seconds per frame on average. Abstract We present an approach to simulate flows driven by surface tension based on triangle meshes.  ...  in the grid-based simulation.  ... 
doi:10.1145/1833351.1778785 fatcat:afkutdq5xzhp3dqhoor6c6xycu

A multiscale approach to mesh-based surface tension flows

Nils Thürey, Chris Wojtan, Markus Gross, Greg Turk
2010 ACM Transactions on Graphics  
Our method consists of two simulation layers: the first layer is an Eulerian method for simulating surface tension forces that is free from typical strict time step constraints.  ...  For the shown simulation, our method requires only 22.3 seconds per frame on average. Abstract We present an approach to simulate flows driven by surface tension based on triangle meshes.  ...  in the grid-based simulation.  ... 
doi:10.1145/1778765.1778785 fatcat:lkk5r2ry4jf7ti6sop4ooncmbe

A multiscale approach to mesh-based surface tension flows

Nils Thürey, Chris Wojtan, Markus Gross, Greg Turk
2010 ACM SIGGRAPH 2010 papers on - SIGGRAPH '10  
Our method consists of two simulation layers: the first layer is an Eulerian method for simulating surface tension forces that is free from typical strict time step constraints.  ...  For the shown simulation, our method requires only 22.3 seconds per frame on average. Abstract We present an approach to simulate flows driven by surface tension based on triangle meshes.  ...  in the grid-based simulation.  ... 
doi:10.1145/1833349.1778785 fatcat:meszadsszjbpfihveyyqxuvg5y

Particle hydrodynamics with tessellation techniques

Steffen Heß, Volker Springel
2010 Monthly notices of the Royal Astronomical Society  
We show that this eliminates spurious surface tension effects present in SPH and that play a role in suppressing certain fluid instabilities.  ...  We find that the new 'Voronoi Particle Hydrodynamics' described here produces comparable results than SPH in shocks, and better ones in turbulent regimes of pure hydrodynamical simulations.  ...  Also I would like to say that it is thanks to Volker Springel, that the work has been possible in this way.  ... 
doi:10.1111/j.1365-2966.2010.16892.x fatcat:nnt6k4msojeelfwtia4ff7lxuu

The Cosmic Web: Geometric Analysis [chapter]

R. van de Weygaert, W. Schaap
2008 Lecture Notes in Physics  
The reconstruction of the spatial weblike patterns in N-body simulations and in the 2dFGRS provide a visual impression of DTFE's performance.  ...  The analysis of the velocity divergence pdf and maps obtained of the velocity flow in the Local Universe (implied by PSCz) illustrate its promise for probing the dynamics of cosmic structure.  ...  Particularly noteworthy are the thin sharp edges surrounding voidlike regions. Fig. 43 . DTFE galaxy surface density in selected regions in the 2dFGRS galaxy surface density field.  ... 
doi:10.1007/978-3-540-44767-2_11 fatcat:66wlzwq3pjevxb6ckfgl4gik2q

Physics-Based Modeling and Predictive Simulation of Powder Bed Fusion Additive Manufacturing Across Length Scales [article]

Christoph Meier, Sebastian L. Fuchs, Nils Much, Jonas Nitzler, Ryan W. Penny, Patrick M. Praegla, Sebastian D. Pröll, Yushen Sun, Reimar Weissbach, Magdalena Schreter, Neil E. Hodge, A. John Hart (+1 others)
2021 arXiv   pre-print
Physics-based modeling and predictive simulation of PBFAM offers the potential to advance fundamental understanding of physical mechanisms that initiate process instabilities and cause defects.  ...  Ongoing work in experimental validation of these models is also summarized.  ...  On the other hand, an accurate and robust description of such interface phenomena is typically rather challenging for mesh-free discretization schemes such as SPH, which underlines the robustness of the  ... 
arXiv:2103.16982v2 fatcat:xvl4sk4loja3bl4y2tvxhywtgy

Equalizing resolution in smoothed-particle hydrodynamics calculations using self-adaptive sinc kernels

Domingo García-Senz, Rubén M. Cabezón, José A. Escartín, Kevin Ebinger
2014 Astronomy and Astrophysics  
The smoothed-particle hydrodynamics (SPH) technique is a numerical method for solving gas-dynamical problems. It has been applied to simulate the evolution of a wide variety of astrophysical systems.  ...  In this work, we propose and check a scheme to balance and equalize the resolution of SPH between high- and low-density regions.  ...  The rendered SPH plots were made using the freely available S PLAS H code (Price 2007) .  ... 
doi:10.1051/0004-6361/201424260 fatcat:rjzu6q43u5fztctxxpxwtmawb4
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