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Reasoning About Liquids via Closed-Loop Simulation

Connor Schenck, Dieter Fox
2017 Robotics: Science and Systems XIII  
Our results show that closed-loop simulation is an effective way to prevent large divergence between the simulated and real liquid states, and additionally that this method can enable reasoning about liquids  ...  In this paper, we evaluate closing the loop between simulation and reality by using observations of real liquids to correct errors when tracking the liquid's state in a simulator.  ...  CLOSED-LOOP LIQUID SIMULATORS While liquid simulators model fluid dynamics based on physical properties, they often don't model every possible force that could affect the liquid; and even the best simulators  ... 
doi:10.15607/rss.2017.xiii.014 dblp:conf/rss/SchenckF17 fatcat:7p7bskhpsfaklnpj42zswwu5ei

Reasoning About Liquids via Closed-Loop Simulation [article]

Connor Schenck, Dieter Fox
2017 arXiv   pre-print
In this paper, we show how to close the loop between liquid simulation and real-time perception. We use observations of liquids to correct errors when tracking the liquid's state in a simulator.  ...  Our results show that closed-loop simulation is an effective way to prevent large divergence between the simulated and real liquid states.  ...  CLOSED-LOOP LIQUID SIMULATORS While liquid simulators model fluid dynamics based on physical properties, they often don't model every possible force that could affect the liquid; and even the best simulators  ... 
arXiv:1703.01656v2 fatcat:xg2fdp73ozeelksk2febf5wwcm

Numerical modeling of heat-pipe transients

1991 Journal of thermophysics and heat transfer  
To model wick-liquid dynamics properly, the process of liquid returning to the evaporator end of the heat pipe from the condenser must be modeled.  ...  An improvement to the model for future study would be the addition of a dynamic liquid model to study the transient behavior of liquid in the wick.  ... 
doi:10.2514/3.273 fatcat:mief2rtwkrdspm7wgrdtcq7swe

Stains on imperfect textile

Yi Zheng, Xiaoyu Chi, Yanyun Chen, Enhua Wu
2021 Virtual Reality & Intelligent Hardware  
This paper introduces techniques for simulation of staining effects on textiles.  ...  Based on the microstructure of yarn, we handle the effect of the stain on the imperfect textile surface. Our simulation results can achieve a photo-realistic effect.  ...  As mentioned in Takatera, when the front of liquid flow in a warp meets a weft one, some liquid in the warp may be transmitted to the weft, and vice versa [12] .  ... 
doi:10.1016/j.vrih.2021.01.001 doaj:4b285c1bae984119801bdaf5729be75a fatcat:nx6uli3jrrdrlbt5dgztfw5i5u

Numerical and experimental investigation on a new modified valve in a valve tray column

Asghar Alizadehdakhel, Masoud Rahimi, Ammar Abdulaziz Alsairafi
2009 Korean Journal of Chemical Engineering  
This paper reports experimental and computational fluid dynamics (CFD) modeling studies on the performance of three modified valves operating in a valve tray column.  ...  The original and modified valves including vnotched, warped and double-valve are tested experimentally.  ...  Their CFD simulation work focused on the clear liquid height.  ... 
doi:10.1007/s11814-009-0081-2 fatcat:itpz42dkdjav5lrioodglfnumm

Interactive localized liquid motion editing

Zherong Pan, Jin Huang, Yiying Tong, Changxi Zheng, Hujun Bao
2013 ACM Transactions on Graphics  
We introduce a novel method to provide intuitive and interactive control of liquid simulation.  ...  Finally, we use the edited liquid animation to guide an offline high-resolution simulation to recover more surface details.  ...  We put one force field every h grid edge length.  ... 
doi:10.1145/2508363.2508429 fatcat:t7abqrzxrzgj7cm4usbcb7ayry

Classification of biosensor time series using dynamic time warping: applications in screening cancer cells with characteristic biomarkers

Balaji Panchapakesan, Patrick Trainor, Shesh Rai, Farhad Khosravi, Goetz Kloecker
2016 Open Access Medical Statistics  
The dynamic time warping (DTW) algorithm is a sequence alignment algorithm that can be used to align two or more series to facilitate quantifying similarity.  ...  Simulation studies demonstrated the positive performance of such classifiers in discriminating between time series containing characteristic features that are obscured by noise in the intensity and time  ...  The value of the weight function depends on the slope of the line segment joining two points in the grid. Further constraints imposed on the warping path are: 1.  ... 
doi:10.2147/oams.s104731 pmid:27942497 pmcid:PMC5147752 fatcat:5atc6htji5capgzh5sbesu3txe

Liquid simulation on lattice-based tetrahedral meshes

Nuttapong Chentanez
2007 ACM SIGGRAPH 2007 computer animation festival on - SIGGRAPH '07  
Although the mesh is warped to conform to the liquid boundary, it has a mathematical guarantee on tetrahedron quality, and is generated very rapidly.  ...  Examples demonstrate that the method captures complex liquid motions and fine details on the free surfaces without suffering from excessive volume loss or artificial damping.  ...  Vertices of the background grid that are too close to the liquid surface are warped so that they lie on the surface. New vertices are added where edges of the background grid cut the surface.  ... 
doi:10.1145/1281740.1281819 dblp:conf/siggraph/Chentanez07 fatcat:lgawhe3wtrdsnikdhzzdzlqktu

Effect of Eccentric Distance on Successive Dual-droplet Impacting a Super-hydrophobic Tube

Kaimin Wang, Han Chen, Jiawei Liu, Hongyu Ge, Hongsheng Liu, Xiaohua Liu, F.-N. Shi, G. Korotcenkov, Y.-L. Lin, R. Dastjerdi, J.-S. Li, D. Dobrota
2021 E3S Web of Conferences  
For the impact velocity of 1.0 m/s, the effect of the eccentric distance on dynamic characteristics is analysed, the corresponding eccentric distances are 0.5, 1.0 and 2.0, respectively.  ...  The break-up during rebound mainly depends on the local airflow and pressure difference.  ...  Then, the spreading factor decreases sharply due to the right-slip and up-warp of the liquid film. Part of the liquid film that up-warps contacts the tube again and the spreading factor increases.  ... 
doi:10.1051/e3sconf/202129901002 fatcat:ogghz34tqjflfavngiv4m4rism

Topology-preserving smoothing of vector fields

R. Westermann, C. Johnson, T. Ertl
2001 IEEE Transactions on Visualization and Computer Graphics  
We then locally analyze the dynamic behavior of level-sets by placing geometric primitives in the scalar field and by subsequently distorting these primitives with respect to local variations in this field  ...  On the right curvature was approximated by evaluating the scale-independent umbrella operator on the deformed flow-warp icons.  ...  Flow surfaces In fluid dynamics, flow surface techniques have become important to the investigation of the dynamics of vector field data.  ... 
doi:10.1109/2945.942690 fatcat:jfff2d6wsfe7pbigzfmgnzaglm

Interactive Simulation of Generalised Newtonian Fluids using GPUs

Somay Jain, Nitish Tripathi, P. J. Narayanan
2014 Proceedings of the 2014 Indian Conference on Computer Vision Graphics and Image Processing - ICVGIP '14  
Keywords Lattice boltzmann, computational fluid dynamics, GPU, CUDA  ...  We present a method to interactively simulate and visualise Generalised Newtonian Fluids (GNF) using GPUs.  ...  Because each warp consists of 32 threads, for grid sizes with x-dimension multiple of 32, each warp operates on cells which lie in the same row, thus leading to optimised access as explained in the following  ... 
doi:10.1145/2683483.2683562 dblp:conf/icvgip/JainTN14 fatcat:czu3gbcmenepxoczb35qudorke

Two-photon laser scanning microscopy with electrowetting-based prism scanning

Omkar D. Supekar, Baris N. Ozbay, Mo Zohrabi, Philip D. Nystrom, Gregory L. Futia, Diego Restrepo, Emily A. Gibson, Juliet T. Gopinath, Victor M. Bright
2017 Biomedical Optics Express  
In addition, we show simulations of the optical system with the EWOD prism, to evaluate the effect of propagating a Gaussian beam through the EWOD prism on the imaging quality.  ...  Based on the simulation results a beam size of 0.91 mm full width half max was chosen to conduct the imaging experiments, resulting in a numerical aperture of 0.17 of the imaging system.  ...  The authors are grateful to John Jackson from Metricon Corporation for refractive index measurements on the liquids.  ... 
doi:10.1364/boe.8.005412 pmid:29296477 pmcid:PMC5745092 fatcat:lcsorgf4ubbnngfascacro36ou

The WArP Experiment: A Double-Phase Argon Detector for Dark Matter Searches

Andrea Zani
2014 Advances in High Energy Physics  
The WArP experiment was then developed as one of the first to implement the idea of coupling Argon in liquid and gas phase, in order to discriminateβ/γ-interactions from nuclear recoils and then achieve  ...  Cryogenic noble liquids emerged in the previous decade as one of the best media to perform WIMP dark matter searches, in particular due to the possibility to scale detector volumes to multiton sizes.  ...  Acknowledgments This document summarises all the years of work and efforts by the members of the WArP Collaboration, as well as the results obtained during this period; it is written on behalf of the collaboration  ... 
doi:10.1155/2014/205107 fatcat:lijlduwa45bq5o2ty4ogezzszy

Massively parallelized replica-exchange simulations of polymers on GPUs

Jonathan Gross, Wolfhard Janke, Michael Bachmann
2011 Computer Physics Communications  
We discuss the advantages of parallelization by multithreading on graphics processing units (GPUs) for parallel tempering Monte Carlo computer simulations of an exemplified bead-spring model for homopolymers  ...  Employing multithreading and utilizing the massive power of the large number of cores on GPUs, being available in modern but standard graphics cards, we find a rapid increase in efficiency when porting  ...  GPU computing finds its application in many fields, such as astronomy [1, 2] , medicine [3, 4] , time series analysis for financial markets [5] , molecular dynamics simulations [6, 7] , Monte Carlo  ... 
doi:10.1016/j.cpc.2011.04.012 fatcat:gauve3kjl5dz5pqv2cxh4fghha

Multilayer Interlocked Woven Fabrics: Simulation of RTM Mold Filling Operation with Preform Permeability Properties

Naveen V Padaki, R. Alagirusamy, B.L. Deopura, R. Fangueiro
2010 Research Journal of Textile and Apparel  
A simple three-dimensional computational fluid dynamics (CFD) simulation model has been developed and the results of the simulation are compared with the experimental RTM resin flow through multilayer  ...  Fabric structural influence in terms of an Interlacement Index (I) has significant influence on the resin flow behaviour of the multilayered preform.  ...  Multiphase Model A multiphase flow model based on the above grid was developed for the RTM flow simulation.  ... 
doi:10.1108/rjta-14-03-2010-b003 fatcat:nd7qvtd2hvc6dk2huicx62qdta
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