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Asynchronous Liquids: Regional Time Stepping for Faster SPH and PCISPH [article]

Prashant Goswami, Christopher Batty
2020 arXiv   pre-print
We demonstrate our approaches on a number of highly dynamic scenarios, demonstrating that they can typically double the speed of a simulation compared to standard methods while achieving visually consistent  ...  Our approach for WCSPH scheme extends an asynchronous SPH technique from compressible flow of astrophysical phenomena to the incompressible free surface setting, and further accelerates it by entirely  ...  Furthermore, without this correction naïve asynchronous simulations exhibit visual artifacts.  ... 
arXiv:2009.14514v1 fatcat:ilg2a2lxhbcmdn462qfbw4x2yi

libcloudph++ 0.2: single-moment bulk, double-moment bulk, and particle-based warm-rain microphysics library in C++

S. Arabas, A. Jaruga, H. Pawlowska, W. W. Grabowski
2014 Geoscientific Model Development Discussions  
A two-dimensional prescribed-flow framework is used in example simulations presented in the paper with the aim of highlighting the library features.  ...  The three schemes are intended for modelling frameworks of different dimensionality and complexity ranging from parcel models to multi-dimensional cloud-resolving (e.g. large-eddy) simulations.  ...  Arabas thanks Shin-ichiro Shima (University of Hyogo, Japan) for introducing the particle-based simulations. We thank D. Jarecka (University of Warsaw) and G.  ... 
doi:10.5194/gmdd-7-8275-2014 fatcat:zwmmq5plubhrpa6r4q5c6jlb6e

Flash-X: A multiphysics simulation software instrument

Anshu Dubey, Klaus Weide, Jared O'Neal, Akash Dhruv, Sean Couch, J. Austin Harris, Tom Klosterman, Rajeev Jain, Johann Rudi, Bronson Messer, Michael Pajkos, Jared Carlson (+19 others)
2022 SoftwareX  
Flash-X is meant primarily for solving Eulerian formulations of applications with compressible and/or incompressible reactive flows.  ...  Flash-X has a new framework that relies on abstractions and asynchronous communications for performance portability across a range of increasingly heterogeneous hardware platforms.  ...  Figure 4 : 4 Figure 4: Example of a flow boiling simulation with Flash-X. Liquid coolant flows over a heater surface with a mean velocity U 0 , leading to phase-change and formation of vapor bubbles.  ... 
doi:10.1016/j.softx.2022.101168 fatcat:n5ts6g7vxvdzxjofdsozr46nlu

libcloudph++ 1.0: a single-moment bulk, double-moment bulk, and particle-based warm-rain microphysics library in C++

S. Arabas, A. Jaruga, H. Pawlowska, W. W. Grabowski
2015 Geoscientific Model Development  
The three schemes are intended for modelling frameworks of different dimensionalities and complexities ranging from parcel models to multi-dimensional cloud-resolving (e.g. large-eddy) simulations.  ...  Arabas thanks Shin-ichiro Shima (University of Hyogo, Japan) for introducing the particle-based simulations. We thank D. Jarecka (University of Warsaw) and G.  ...  The latter covers all other processes (transport of particles, sedimentation, and coalescence) which may be computed asynchronously, for example, while the Eulerian model calculates advection of the Eulerian  ... 
doi:10.5194/gmd-8-1677-2015 fatcat:2dwpktlsiverjb6esa7fovu2li

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.  ...  [ATW13] also 9 use an adaptive BCC mesh for simulating liquids. Sifakis et 10 al.  ...  Eulerian simulation & Lagrangian particles Several early methods combined Eulerian fluid simulations with Lagrangian particles to animate splashing droplets.  ... 
doi:10.1111/cgf.12941 fatcat:vxw2g7hsffawvo7245vi6amipy

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  
We present a method to interactively simulate and visualise Generalised Newtonian Fluids (GNF) using GPUs.  ...  We use a statistical approach called Lattice Boltzmann Method (LBM) for the simulation. LBM is easy to understand and implement and does not include discretisation of differential equations.  ...  Lagrangian methods were developed earlier to counter the shortcomings in Eulerian simulations. Desburn et al.  ... 
doi:10.1145/2683483.2683562 dblp:conf/icvgip/JainTN14 fatcat:czu3gbcmenepxoczb35qudorke

Multiscale molecular dynamics/hydrodynamics implementation of two dimensional "Mercedes Benz" water model

A. Scukins, D. Nerukh, E. Pavlov, S. Karabasov, A. Markesteijn
2015 The European Physical Journal Special Topics  
The Eulerian phase (FH), that corresponds to the cell averages on the regular grid, forms the FH 'liquid' with the density ρ and the momentum ρu i , one value of each per grid cell.  ...  One phase corresponds to the Lagrangian phase (MD particles) and the other is the Eulerian phase (FH continuum).  ...  For the FH 'liquid' we use following momentum conservation equation and for MD 'liquid' In order to maintain momentum conservation we introduce the following dynamical law: where the forcing operator is  ... 
doi:10.1140/epjst/e2015-02409-8 fatcat:x55ynwhpe5dijnpjkxqy2drxw4

Simulation Of The Process Of Cavitation Treatment Of Liquid Feed

Elchyn Aliiev, Roman Maliehin, Vitalii Ivliev, Olha Aliieva
2021 Scientific Horizons  
The purpose of the study is to simulate the process of cavitation treatment of liquid feed with a rotary cavitation disperser-homogeniser and substantiate its rational design and technological parameters  ...  and concentration of the gaseous phase of liquid in the diffuser are established, which indicates the presence of cavitation.  ...  Numerical simulations were performed using the Eulerian multiphase model, multiphase interaction, and the volume of fluid method (VOF).  ... 
doi:10.48077/scihor.24(2).2021.16-26 fatcat:zmietkooqffipk5dnfrpajt3iy

Concurrent multiscale modelling of atomistic and hydrodynamic processes in liquids

A. Markesteijn, S. Karabasov, A. Scukins, D. Nerukh, V. Glotov, V. Goloviznin
2014 Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences  
Its implementation can be as efficient as that of the deterministic CFD methods by using non-uniform Eulerian grids and asynchronous time stepping.  ...  The LL-FH equations can be efficiently solved with Eulerian methods, which have reached a mature state in computational fluid dynamics (CFD), in the framework of the time asynchronous relative dimension  ... 
doi:10.1098/rsta.2013.0379 pmid:24982246 pmcid:PMC4084524 fatcat:xar3vf6ngjfvnmpyy7lj5oatqu

Water Wave Animation via Wavefront Parameter Interpolation

Stefan Jeschke, Chris Wojtan
2015 ACM Transactions on Graphics  
that enables our simulations to elegantly sidestep the Nyquist limit; a dispersion approximation for efficiently amplifying the number of simulated waves by several orders of magnitude; and additional  ...  Our contributions include: a novel wavefront tracking technique that enables dispersion, refraction, reflection, and diffraction in the same simulation; a unique multi-valued function interpolation method  ...  INTRODUCTION Liquid simulation has been an important problem in computer graphics for decades.  ... 
doi:10.1145/2714572 fatcat:araw5glranautp5uy6qoyf3i6m

Magnetic Pulse Welding: An Innovative Joining Technology for Similar and Dissimilar Metal Pairs [chapter]

T. Sapanathan, R.N. Raoelison, N. Buiron, M. Rachik
2016 Joining Technologies  
This chapter clearly highlights the process, applications, requirements, interfacial kinematics of the welding, numerical predictions of interfacial behaviours and multi-physics simulations.  ...  of a suitable method, namely Eulerian simulation to compute the collision and weld generation.  ...  Figure 10 . 10 Eulerian simulation showing the development of wavy pattern at the welded interface.  ... 
doi:10.5772/63525 fatcat:md6murhsofb7jkj2mzb63ybgby

Transport of expiratory droplets in an aircraft cabin

Jitendra K. Gupta, Chao-Hsin Lin, Qingyan Chen
2011 Indoor Air: International Journal of Indoor Environment and Health  
The passengers can breathe differently, thus an asynchronous (random) breathing pattern was assigned for each passenger to simulate one such case.  ...  The expiratory droplets consist of liquid and solid matter. The liquid matter was assumed to be volatile and was 90% of the total volume of the droplets (Potter et al., 1963) .  ... 
doi:10.1111/j.1600-0668.2010.00676.x pmid:21208287 fatcat:3cgbdh5ngjh4hpxl2qc7et5w7a

IFP-C3D: an Unstructured Parallel Solver for Reactive Compressible Gas Flow with Spray

J. Bohbot, N. Gillet, A. Benkenida
2009 Oil & Gas Science and Technology  
L'injection de carburant liquide est modélisée par une approche stochastique Lagrangienne ainsi que la formation de film liquide.  ...  de simulation pour la conception et le contrôle du groupe motopropulseur  ...  An Eulerian multi-fluid modelling to simulate poly-disperse liquid spray is under development to increase the predictivity of the fuel injection.  ... 
doi:10.2516/ogst/2009016 fatcat:vhxhdal22rgjzawzgnelbcrrim

A novel approach for modeling bubbling gas-solid fluidized beds

Javier Villa Briongos, Sergio Sanchéz-Delgado, Antonio Acosta-Iborra, Domingo Santana
2010 AIChE Journal  
To validate the model, the simulated dynamics are compared to both experimental and literature data.  ...  frequency and state space analysis are complementarily used with a multiresolution approach based on the empirical method of decomposition, EMD, to explore the different dynamic scales appearing in both the simulated  ...  During the last decade due to the shocking increase of the computer capabilities there are a huge number of literature dealing with gas-solid FB modelling, the models can be divided into two groups, Eulerian-Eulerian  ... 
doi:10.1002/aic.12375 fatcat:xa2qgoxmbjb43hdc763tgpoedm

Real-time synthesis of bleeding for virtual hysteroscopy

János Zátonyi, Rupert Paget, Gábor Székely, Markus Grassi, Michael Bajka
2005 Medical Image Analysis  
In this paper we present a method for simulating bleeding in a virtual reality hysteroscopic simulator for surgical training.  ...  For correct visualization in the hysteroscopic simulator, it is, however, necessary to perform the simulation fully in 3D.  ...  of liquid) are performed.  ... 
doi:10.1016/ pmid:15854845 fatcat:wv46xw2qs5d4rc4euss4scybby
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