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Narrow Band FLIP for Liquid Simulations

Florian Ferstl, Ryoichi Ando, Chris Wojtan, Rüdiger Westermann, Nils Thuerey
2016 Computer graphics forum (Print)  
We present a method that only uses FLIP particles within a narrow band of the liquid surface, while efficiently representing the remaining inner volume on a regular grid.  ...  Abstract The Fluid Implicit Particle method (FLIP) for liquid simulations uses particles to reduce numerical dissipation and provide important visual cues for events like complex splashes and small-scale  ...  Hence, we refer to our method as narrow band FLIP (NB-FLIP). Our narrow band method consists of three main components: 1. The coupling of grid simulation and FLIP simulation. 2.  ... 
doi:10.1111/cgf.12825 fatcat:qs3e2oax7nasdkm6atlbcn37ee

Simulation of Fluid and Complex Obstacle Coupling Based on Narrow Band FLIP Method

Changjun Zou, Yong Yin
2018 Water  
With the continuous development of fluid simulation theory and technology, there are increasingly higher requirements for simulation of complex fluid interaction.  ...  Improved from FLIP method, the NBFLIP method combines the advantages of Euler method and Lagrangian method.  ...  Based on this fact, Ferstl [3] proposed a fluid simulation method called the Narrow Band FLIP (NBFLIP) method, which reduces the computational effort by resampling the particle in the narrow band without  ... 
doi:10.3390/w10060811 fatcat:xvkwfwlcfnczdmscuipexn5e6m

Ships, Splashes, and Waves on a Vast Ocean [article]

Libo Huang, Ziyin Qu, Xun Tan, Xinxin Zhang, Dominik L. Michels, Chenfanfu Jiang
2021 arXiv   pre-print
Such simulations can be carried out using the Fluid-Implicit-Particle (FLIP) method.  ...  Simulating water splashes near moving objects, which height field methods for water waves cannot capture, necessitates high resolutions.  ...  We thank Da Fang and Christopher Batty for releasing their source code and Miguelangelo Rosario for providing the ship model.  ... 
arXiv:2108.05481v3 fatcat:yapojlceabcb5ihxpm7fmoqk7e

Non-Fermi-Liquid Behavior and Double-Exchange Physics in Orbital-Selective Mott Systems

S. Biermann, L. de' Medici, A. Georges
2005 Physical Review Letters  
We study a multi-band Hubbard model in its orbital selective Mott phase, in which localized electrons in a narrow band coexist with itinerant electrons in a wide band.  ...  The high-temperature disordered phase thus differs from a Fermi liquid, and displays a finite scattering rate of the conduction electrons at the Fermi level, which depends continuously on the spin anisotropy  ...  In both cases, the self-energy of the narrow band (not shown) diverges at low frequency, while the self-energy of the broad band does not, indicating that the narrow band is Mott-localized while the broad  ... 
doi:10.1103/physrevlett.95.206401 pmid:16384076 fatcat:vj4rpcl74bdftn5j5t6wd3xyr4

Orbital-selective Mott transitions in the 2-bandJz-model: a high-precision quantum Monte Carlo study

P. G. J. van Dongen, C. Knecht, N. Blümer
2006 Physica status solidi. B, Basic research  
orbital-selective Mott transitions (OSMTs) even in the absence of spin-flip terms and pair-hopping processes.  ...  Using high-precision quantum Monte Carlo (QMC) simulations within the framework of dynamical mean field theory (DMFT), we show that the anisotropic degenerate two-orbital Hubbard model contains two consecutive  ...  Ueda for stimulating discussions and acknowledge support by the NIC Jülich and by the DFG (Forschergruppe 559, Bl775/1).  ... 
doi:10.1002/pssb.200562449 fatcat:bcvwtb324bc3fclkn5x2g3keyi

Orbital-selective Mott transitions in two-band Hubbard models

Nils Blümer, Carsten Knecht, Krunoslav Požgajčić, Peter G.J. van Dongen
2007 Journal of Magnetism and Magnetic Materials  
We demonstrate that two distinct orbital-selective Mott transitions (OSMTs) occur for a bandwidth ratio of 2 even without spin-flip contributions to the Hund exchange, and we quantify numerical errors  ...  OSM phase and opening the possibility for a new quantum-critical point.  ...  This is seen in Fig. 3 : For α = 0, a large hysteresis region appears in the wide-band quasiparticle weight (uppermost, grey line) while only a single coex- istence point is resolved for the narrow band  ... 
doi:10.1016/j.jmmm.2006.10.525 fatcat:2tav2blpfrb7pitrddqzlyjttq

A stream function solver for liquid simulations

Ryoichi Ando, Nils Thuerey, Chris Wojtan
2015 ACM Transactions on Graphics  
We implemented this method using a variant of FLIP simulation which only samples particles within a narrow band of the liquid surface, and we illustrate the effectiveness of our method for detailed two-phase  ...  Previous methods have used stream function techniques for the simulation of detailed single-phase flows, but a formulation for liquid simulation has proved elusive in part due to the free surface boundary  ...  Additionally, we want to thank Reiji Tsuruno for providing us with computational resources, Keenan Crane for discussions about the Hodge decomposition, Florian Ferstl for discussions about FLIP, and the  ... 
doi:10.1145/2766935 fatcat:xy36rdwobfc27hewghx73rhdsa

Narrowing of Protein NMR Spectral Lines Broadened by Chemical Exchange

Ying Li, Arthur G. Palmer
2010 Journal of the American Chemical Society  
We present a multipulse method for reducing chemical exchange broadening during the frequency-encoding periods of liquid-state multidimensional NMR experiments.  ...  Enhanced resolution and sensitivity are demonstrated for exchange-broadened 15 N resonances of the protein ribonuclease A (RNase A).  ...  Patrick Loria (Yale University) for providing the sample of RNase A. We thank Mark Rance (University of Cincinnati) for helpful discussions.  ... 
doi:10.1021/ja103251h pmid:20550111 pmcid:PMC2921271 fatcat:tgzkjh3q5rhinin6kxeajesara

Neural UpFlow: A Scene Flow Learning Approach to Increase the Apparent Resolution of Particle-Based Liquids [article]

Bruno Roy, Pierre Poulin, Eric Paquette
2021 arXiv   pre-print
We also propose a particle-based approach to interpolate between liquids generated from varying simulation discretizations using a state-of-the-art bidirectional optical flow solver method for fluids in  ...  We present a novel up-resing technique for generating high-resolution liquids based on scene flow estimation using deep neural networks.  ...  Finally, We would like to thank Autodesk, Inc. for providing resources to carry out this project in the end.  ... 
arXiv:2106.05143v1 fatcat:yzb76xpbrrbstnyi6c7nwqnvby

Revisiting the Flocking Transition Using Active Spins

A. P. Solon, J. Tailleur
2013 Physical Review Letters  
Using microscopic simulations, we show that this theoretical prediction holds in 2d whereas the fluctuations alter the transition in 1d, preventing for instance any spontaneous symmetry breaking.  ...  In this first-order phase transition, the magnetization is proportional to the liquid fraction and thus varies continuously.  ...  In this regime, Eqs. (5)- (8) and simulations of the RMFM yield the same profiles and band velocities.  ... 
doi:10.1103/physrevlett.111.078101 pmid:23992085 fatcat:eumaa36cozaj3nozhl2fd6tayu

Liquid Splash Modeling with Neural Networks [article]

Kiwon Um, Xiangyu Hu, Nils Thuerey
2018 arXiv   pre-print
This paper proposes a new data-driven approach to model detailed splashes for liquid simulations with neural networks.  ...  For the velocity modification, we employ a heteroscedastic model. We evaluate our method for different spatial scales, simulation setups, and solvers.  ...  After the pressure projection step, we run classification on all particles in a narrow band of one cell around the surface.  ... 
arXiv:1704.04456v2 fatcat:qzsah4z57jadvavhwsz62bn5mq

Investigation of the Flip-Chip Package With BCB Underfill for W-Band Applications

Chin-Te Wang, Li-Han Hsu, Wei-Cheng Wu, Heng-Tung Hsu, Edward Yi Chang, Yin-Chu Hu, Ching-Ting Lee, Szu-Ping Tsai
2014 IEEE Microwave and Wireless Components Letters  
Index Terms-Benzocyclobutene (BCB), flip-chip packaging, millimeter-wave, reliability, W-band.  ...  Flip-chip package has great potential for use in millimeter-wave applications.  ...  This study evaluates the feasibility of using BCB as an underfill material for flip-chip interconnects with applications up to W-band frequencies.  ... 
doi:10.1109/lmwc.2013.2285213 fatcat:ueipdyt55vhofmdxd6wgxooleu

Entropy-cooled nonequilibrium states of the Hubbard model

Philipp Werner, Jianju Li, Denis Golež, Martin Eckstein
2019 Physical review B  
Using nonequilibrium dynamical mean field theory and a particle-hole symmetric setup with dipolar excitations to full and empty bands we produce cold photo-doped Mott insulating states with a sharp Drude  ...  The reshuffling of entropy into full and empty bands not only provides an efficient cooling mechanism, it also allows to overcome thermalization bottlenecks and slow dynamics that have been observed in  ...  This result is based on the fact that an ac field quench with such an E / effectively flips the band and results in a population inversion in the flipped band.  ... 
doi:10.1103/physrevb.100.155130 fatcat:zopj73divndfjam3cntfnallhi

Amplitude concentration in a phase-modulated spectrum due to femtosecond filamentation

J. V. Thompson, P. A. Zhokhov, M. M. Springer, A. J. Traverso, V. V. Yakovlev, A. M. Zheltikov, A. V. Sokolov, M. O. Scully
2017 Scientific Reports  
The phase mask applied by the pulse shaper determines the frequencies for which accumulation occurs, as well as the intensity of the spectral concentration.  ...  Figure 4 . 4 Energy of the simulated pulse propagation as a function of distance (linear focus is at 0 cm) for the case of a π phase flip at 791-793 nm (blue, dashed) compared to the case of no phase flip  ...  Plotting the energy contained in the spectral band of the phase flip (green, solid) versus the energy not in the phase flipped region (violet, solid), it is shown that energy is actually transferred to  ... 
doi:10.1038/srep43367 pmid:28266540 pmcid:PMC5339899 fatcat:pw442tbrpbhknpfu4yj4ueixtm

Page 307 of Journal of Spacecraft and Rockets Vol. 5, Issue 3 [page]

1968 Journal of Spacecraft and Rockets  
However, if two or more resonant frequencies occur within a narrow frequency band, significant modal coupling may be present.  ...  A cal- culation was made for the simulated lift-off condition using the equivalent mass given by Eq. (15) applied to liquid masses contained within cylindrical tanks only, since Eq. (15) does not apply  ... 
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