Filters








1,618 Hits in 4.1 sec

A unified approach for modeling complex occlusions in fluid simulations

Ben Houston, Chris Bond, Mark Wiebe
2003 Proceedings of the SIGGRAPH 2003 conference on Sketches & applications in conjunction with the 30th annual conference on Computer graphics and interactive techniques - GRAPH '03  
Our unified approach to modeling occlusions has significantly decreased the difficulty of specifying complex dynamic scenes.  ...  Unified Occlusion Representation In order to unify all of the occlusions affecting the simulation, we represent their geometry using a level set instead of relying on a polygon mesh directly (as was done  ... 
doi:10.1145/965557.965561 fatcat:sytklblbf5aphivqsllv67lbly

A unified approach for modeling complex occlusions in fluid simulations

Ben Houston, Chris Bond, Mark Wiebe
2003 Proceedings of the SIGGRAPH 2003 conference on Sketches & applications in conjunction with the 30th annual conference on Computer graphics and interactive techniques - GRAPH '03  
Our unified approach to modeling occlusions has significantly decreased the difficulty of specifying complex dynamic scenes.  ...  Unified Occlusion Representation In order to unify all of the occlusions affecting the simulation, we represent their geometry using a level set instead of relying on a polygon mesh directly (as was done  ... 
doi:10.1145/965400.965561 dblp:conf/siggraph/HoustonBW03 fatcat:5a7fvtwtlvh3hm62ozmtofcgnm

"Tap, squeeze and stir" the virtual world: Touching the different states of matter through 6DoF haptic interaction

Gabriel Cirio, Maud Marchal, Aurelien Le Gentil, Anatole Lecuyer
2011 2011 IEEE Virtual Reality Conference  
There are many physically-based efficient models that enable the simulation of a specific type of media, e.g. fluid volumes, deformable and rigid bodies.  ...  However, combining these often heterogeneous algorithms in the same virtual world in order to simulate and interact with different types of media can be a complex task.  ...  Rigid bodies are modeled with the same SPH particles used in the fluid simulation, creating a unified particle model as described in [12] .  ... 
doi:10.1109/vr.2011.5759449 dblp:conf/vr/CirioMGL11 fatcat:44yuucbdmjdppj2piabf6thxky

Approximate Air-Fluid Interactions for SPH [article]

Christoph Gissler, Stefan Band, Andreas Peer, Markus Ihmsen, Matthias Teschner
2017 Workshop on Virtual Reality Interactions and Physical Simulations  
In contrast, the air-fluid interactions can be approximated efficiently by employing a drag equation. Here, for plausible effects, the parameterization is important but challenging.  ...  We present an approach to calculate the parameters of the used drag equation in a physically motivated way.  ...  The Armadillo and Bunny models are courtesy of the Stanford Computer Graphics Laboratory. We thank BBS Motorsport GmbH for providing the rim model for the tire testing scene.  ... 
doi:10.2312/vriphys.20171081 dblp:conf/vriphys/GisslerBPIT17 fatcat:mmxhe2b6vbertg4oj7ftadsjtq

Hierarchical RLE level set

Ben Houston, Michael B. Nielsen, Christopher Batty, Ola Nilsson, Ken Museth
2006 ACM Transactions on Graphics  
In brief, the H-RLE level set employs an RLE in a dimensionally recursive fashion.  ...  implicit object representation, efficient and robust mesh to level set conversion, rapid ray tracing, level set metamorphosis, collision detection, and fully sparse fluid simulation (including RLE vector  ...  ACKNOWLEDGMENTS The following individuals contributed to the modeling, simulation, and/or rendering of the images included in this article: Mark Wiebe, Liem Nguyen, Chris Pember, Jason Cobill, Blair Werschler  ... 
doi:10.1145/1122501.1122508 fatcat:bxkwgh3qanecfeop5zdxklw434

Novel fluid detail enhancement based on multi-layer depth regression analysis and FLIP fluid simulation

Yuxing Qiu, Lipeng Yang, Shuai Li, Qing Xia, Hong Qin, Aimin Hao
2016 Computer Animation and Virtual Worlds  
In this paper, we propose a novel integrated method for effective modeling and realistic enhancement of scale-sensitive fluid simulation details.  ...  Third, we propose a logistic regression-based model to rigorously pinpoint the complex interacting regions, wherein multiple detail-relevant factors are taken into account based on the captured multiple  ...  We also thank the anonymous reviewers for their constructive critiques.  ... 
doi:10.1002/cav.1741 fatcat:bjklafrmrjhttillkxzek7xd7q

A novel integrated analysis-and-simulation approach for detail enhancement in FLIP fluid interaction

Lipeng Yang, Shuai Li, Qing Xia, Hong Qin, Aimin Hao
2015 Proceedings of the 21st ACM Symposium on Virtual Reality Software and Technology - VRST '15  
It brings forth a suite of innovations in a unified framework, including depth-image-based space analysis for multi-scale detail detection, time-space analysis based on the logistic regression model that  ...  This paper advocates a novel integrated method to tightly couple simulation with analysis for the effective modeling and enhancement of scale-aware fluid details.  ...  We also thank the anonymous reviewers for their constructive critiques.  ... 
doi:10.1145/2821592.2821598 dblp:conf/vrst/YangLXQH15 fatcat:gmndizmavnh5jcmzwg7sxu7f7a

Fluid-inspired field representation for risk assessment in road scenes

Xuanpeng Li, Lifeng Zhu, Qifan Xue, Dong Wang, Yongjie Jessica Zhang
2020 Computational Visual Media  
It proves a promising approach for collision risk assessment in road scenes.  ...  It leads to failure of motion planning for intelligent agents like autonomous vehicles. In this paper, we propose a fluid-inspired model to estimate collision risk in road scenes.  ...  Hence, in this paper, we aim to integrate a fluid-inspired field model into approaches to collision risk assessment for real road scenes.  ... 
doi:10.1007/s41095-020-0190-8 fatcat:gnmdjhlk35dhtpelhvjskqkm2q

Particle-Based Methods for Multiscale Modeling of Blood Flow in the Circulation and in Devices: Challenges and Future Directions

Takami Yamaguchi, Takuji Ishikawa, Y. Imai, N. Matsuki, Mikhail Xenos, Yuefan Deng, Danny Bluestein
2010 Annals of Biomedical Engineering  
We offer a paradigm shift by adopting a multidisciplinary approach with fluid dynamics simulations coupled to biophysical and biochemical transport.  ...  characterizing the complex processes taking place in flow-induced blood clotting.  ...  can combine by introducing separate analysis of fluid mechanics, such as the Stokesian dynamics method (SDM). 13 The approach is to treat all the constituents in the blood flow field by a unified method  ... 
doi:10.1007/s10439-010-9904-x pmid:20336827 pmcid:PMC2862251 fatcat:yr2n265365d5hily7iaclaajka

Interactive Generation of Time-evolving, Snow-Covered Landscapes with Avalanches

G. Cordonnier, P. Ecormier, E. Galin, J. Gain, B. Benes, M.-P. Cani
2018 Computer graphics forum (Print)  
The terrain is modeled as a height field with additional layers for stable, compacted, unstable, and powdery snow, which behave in combination as a semi-viscous fluid.  ...  Our optimized GPU-implementation allows interactive updates of snow type and depth across a large (10 × 10 km) terrain, including real-time avalanches, making this suitable for visual assets in computer  ...  Acknowledgements We thank the NASA Airborne Snow Observatory (http://aso. jpl.nasa.gov) and Simon Gascoin for topographic and snow  ... 
doi:10.1111/cgf.13379 fatcat:c7r7ofimh5an7myfxhpy5zic6i

Interactive Modeling and Authoring of Climbing Plants

Torsten Hädrich, Bedrich Benes, Oliver Deussen, Sören Pirk
2017 Computer graphics forum (Print)  
The effectiveness of our approach is demonstrated through a number of interactive experiments, including modeling and animation of different species of climbing plants on complex support structures.  ...  Abstract We present a novel system for the interactive modeling of developmental climbing plants with an emphasis on efficient control and plausible physics response.  ...  Acknowledgements We thank the anonymous reviewers for their constructive suggestions.  ... 
doi:10.1111/cgf.13106 fatcat:nzsat4w5lbadpacm5ii7kgsmpq

Visualizing Multivariate Volume Data from Turbulent Combustion Simulations

Hiroshi Akiba, Kwan-liu Ma, Jacqueline Chen, Evatt Hawkes
2007 Computing in science & engineering (Print)  
DNS is also a unique tool for developing and validating the reduced model descriptions used in macroscale simulations of engineering-level systems.  ...  R ecent developments in numerical methodology for combustion simulations that effectively harness modern high-performance parallel computers can simulate reacting flows by using high-fidelity models for  ...  Acknowledgments The work is sponsored in part by the US Department of Energy's Division of Chemical Sciences, Geosciences, and Biosciences, the Office of Basic Energy Sciences, the SciDAC program, and  ... 
doi:10.1109/mcse.2007.42 fatcat:ofka2emnmndc3bxnqyvajxqfpm

Interactive cutaways of oil reservoirs

Felipe Moura de Carvalho, Emilio Vital Brazil, Ricardo Guerra Marroquim, Mario Costa Sousa, Antonio Oliveira
2016 Graphical Models  
Hydrocarbons reservoirs are entities buried deep in the earth's crust, and a simplified 3D geological model that mimics this environment is generated to run simulations and help understand geological and  ...  In the Oil and Gas industry, processing and visualizing 3D models is of paramount importance for making exploratory and production decisions.  ...  Acknowledgments We would like to thank our colleagues for their useful discussions and advice. We also thank the anonymous reviewers for their careful and valuable comments and suggestions.  ... 
doi:10.1016/j.gmod.2016.02.001 fatcat:3x5agpl4avei7i6itnsf3vww2e

Quantifying Shear-Induced Deformation and Detachment of Individual Adherent Sickle Red Blood Cells

Yixiang Deng, Dimitrios P. Papageorgiou, Hung-Yu Chang, Sabia Z. Abidi, Xuejin Li, Ming Dao, George Em Karniadakis
2019 Biophysical Journal  
Vaso-occlusive crisis, a common painful complication of sickle cell disease, is a complex process triggered by intercellular adhesive interactions among blood cells and the endothelium in all human organs  ...  The critical WSS value for detaching a single SME in oxygenated state is in the range of 3.9-5.5 Pa depending on the number of adhesion sites; the critical WSS value for ISCs is lower than that of SMEs  ...  Kato for providing sickle blood samples. We acknowledge support from National Institutes of Health grants U01HL114476 and R01HL121386. X.L. acknowledges support from the Hundred Talents  ... 
doi:10.1016/j.bpj.2018.12.008 pmid:30612714 pmcid:PMC6350013 fatcat:zamok3apdjgv5lebfysrascr74

Computational fluid dynamics as a risk assessment tool for aneurysm rupture

Yuichi Murayama, Soichiro Fujimura, Tomoaki Suzuki, Hiroyuki Takao
2019 Neurosurgical Focus  
OBJECTIVEThe authors reviewed the clinical role of computational fluid dynamics (CFD) in assessing the risk of intracranial aneurysm rupture.METHODSA literature review was performed to identify reports  ...  identified a total of 258 published articles evaluating rupture risk, growth, and endovascular device assessment.  ...  Acknowledgments We thank Kostadin Karagiozov, MD, PhD, for manuscript preparation.  ... 
doi:10.3171/2019.4.focus19189 pmid:31261116 fatcat:nzmhzqjq3rhfxdeoefjyunl66u
« Previous Showing results 1 — 15 out of 1,618 results