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A fast, low-memory, and stable algorithm for implementing multicomponent transport in direct numerical simulations [article]

Aaron J. Fillo, Jason Schlup, Guillaume Beardsell, Guillaume Blanquart, Kyle E. Niemeyer
2019 arXiv   pre-print
In this study we propose a fast,efficient, low-memory algorithm and use that to evaluate the role of multicomponent mass diffusion in reacting-flow simulations.  ...  Direct numerical simulation of these flames is performed by implementing the Stefan-Maxwell equations in NGA.  ...  diffusion, Mixture-averaged diffusion Introduction Implementing full multicomponent mass diffusion transport in direct numerical simulation (DNS) can be memory intensive and computationally expensive  ... 
arXiv:1808.05463v3 fatcat:xkxxdznrxfbiddu2co5xu75m7e

Memory-efficient Lattice Boltzmann Method for low Reynolds number flows [article]

Maciej Matyka
2019 arXiv   pre-print
Compared to the standard algorithm, the presented formulation is simpler and shorter in implementation. It is less error-prone and needs significantly less working memory in low Reynolds number flows.  ...  This leads to the removal of the distribution function from the computer memory. To test the solver the Poiseuille and Driven Cavity flows are simulated and analyzed.  ...  I suggest that the LBM1 algorithm may provide a good starting point for fast and memory-efficient implementations of a solver in parallel environments, including graphics processors (GPUs), as the number  ... 
arXiv:1912.09327v1 fatcat:d5x62wd6gne4tc6dsqo5risksa

Comparison of finite volume and lattice Boltzmann methods for multicomponent flow simulations

Orest Shardt
2019 Canadian Journal of Chemical Engineering  
In pseudopotential lattice Boltzmann (LB) models for simulating multicomponent flows, interaction forces between the components of a mixture lead to phase separation and interfacial tension.  ...  For three-dimensional simulations, the finite volume approach is expected to be faster than LB and would benefit from the demonstrated flexibility in specifying model parameters.  ...  In this case, memory access is fast and memory-intensive algorithms, such as LBM simulations, proceed quickly, limited by the speed of arithmetic operations.  ... 
doi:10.1002/cjce.23634 fatcat:j7exliqrejgsjlnazxbtoru3oi

Multiphase lattice Boltzmann simulations for porous media applications -- a review [article]

Haihu Liu, Qinjun Kang, Christopher R. Leonardi, Sebastian Schmieschek, Ariel Narváez, Bruce D. Jones, John R. Williams, Albert J. Valocchi, Jens Harting
2016 arXiv   pre-print
In addition to single phase simulations allowing, for example, a precise quantification of the permeability of a porous sample, a number of extensions to the lattice Boltzmann method are available which  ...  allow to study multiphase and multicomponent flows on a pore scale level.  ...  Acknowledgements We thank Vahid Joekar Niasar and Cor van Kruijsdijk for the organisation of the workshop on "(sub) pore-scale modeling of multiphase flow and transport in porous media" which took place  ... 
arXiv:1404.7523v2 fatcat:vnmkcogmtzeqdjavoa4j6ulkju

Multiphase lattice Boltzmann simulations for porous media applications

Haihu Liu, Qinjun Kang, Christopher R. Leonardi, Sebastian Schmieschek, Ariel Narváez, Bruce D. Jones, John R. Williams, Albert J. Valocchi, Jens Harting
2015 Computational Geosciences  
In addition to single phase simulations allowing, for example, a precise quantification of the permeability of a porous sample, a number of extensions to the lattice Boltzmann method are available which  ...  allow to study multiphase and multicomponent flows on a pore scale level.  ...  A fast dissolution is disastrous for obtaining reliable simulation results.  ... 
doi:10.1007/s10596-015-9542-3 fatcat:dgt4n4bwprgi5da3fxntgoipuy

Lattice Boltzmann Simulation Of Binary Mixture Diffusion Using Modern Graphics Processors

Mohammad Amin Safi, Mahmud Ashrafizaadeh, Amir Ali Ashrafizaadeh
2011 Zenodo  
GPUs, while the numerical results are in excellent agreement with the available analytical and numerical data in the literature.  ...  A highly optimized implementation of binary mixture diffusion with no initial bulk velocity on graphics processors is presented.  ...  ACKNOWLEDGMENT Financial support of the Iranian ministry of science, research and technology and the aviation industries is acknowledged.  ... 
doi:10.5281/zenodo.1077247 fatcat:f75ullrnfreupij74s75rzfsla

Coupling of mass transfer and reactive transport for nonlinear reactions in heterogeneous media

M. Willmann, J. Carrera, X. Sanchez-Vila, O. Silva, M. Dentz
2010 Water Resources Research  
., same conservative BTC) homogenized medium with transport characterized by a nonlocal in time equation involving a memory function.  ...  Silva, and M. Dentz (2010), Coupling of mass transfer and reactive transport for nonlinear reactions in heterogeneous media, Water Resour. Res., 46, W07512,  ...  This work was partly funded by ENRESA and the European Commission through the project FUNMIG and by the Spanish agency for scientific research (CICYT) through project CTM2007-66724.  ... 
doi:10.1029/2009wr007739 fatcat:dwafq6fpvrdgpf4ayfcjpvkkb4

Toward modular in situ visualization in Earth system models: the regional modeling system RegESM 1.1

Ufuk Utku Turuncoglu
2019 Geoscientific Model Development  
The presented methodology also aims to create an integrated modeling environment for analyzing fast-moving processes and their evolution both in time and space to support a better understanding of the  ...  of the numerical models regarding represented physical processes and their complex non-linear interactions.  ...  This study has been supported by a research grant (116Y136)  ... 
doi:10.5194/gmd-12-233-2019 fatcat:vxsfnnro3jdzzfbge6ulhum27q

Meshless techniques for anisotropic diffusion

Annamaria Mazzia, Giorgio Pini, Flavio Sartoretto
2014 Applied Mathematics and Computation  
A good numerical method would be locally mass conservative, produce no or minimal over/under-shoots, produce minimal numerical diffusion, and require no CFL time-step limit for stability.  ...  Our objective is to simulate transport processes over very long time periods, as needed in, e.g., the simulation of geologic carbon sequestration.  ...  We present complex scenarios of multicomponent reactive transport in 2-D and in 3-D. These scenarios are further developments of the setting given by the MoMaS benchmark.  ... 
doi:10.1016/j.amc.2014.03.032 fatcat:c527226gyfgbffnq4p67qxd7wi

Dynamic optimisation of an industrial web process

Majeed Soufian
2008 International Journal of Multiphysics  
Various simulation tests for validation are accompanied with the design, development and real-time industrial implementation of an optimal controller for dynamic optimisation of this web process.  ...  It is shown that in comparison with the traditional controller, the new controller resulted in a better performance, an improvement in film quality and saving in raw materials.  ...  Billings for providing the possibility to implement control algorithm on their plastic extrusion process.  ... 
doi:10.1260/175095408786927471 fatcat:c66x524divdhle3o2q65w5y4oa

An adaptive chemistry approach to modeling complex kinetics in reacting flows

Douglas A. Schwer, Pisi Lu, William H. Green
2003 Combustion and Flame  
Existing algorithms use a single chemical kinetic model over the entire domain of a reacting flow simulation.  ...  A procedure to implement adaptive chemistry is presented, and compared with the conventional full chemistry approach.  ...  Part of Pisi Lu's contribution to this work was done while he was an exchange student at MIT supported by the Foundation of Science and Technology (FCT) of Portugal.  ... 
doi:10.1016/s0010-2180(03)00045-2 fatcat:ikcfus6jxvc7tbqipe63pv2fia

High-resolution finite element methods for 3D simulation of compositionally triggered instabilities in porous media

Ebrahim Shahraeeni, Joachim Moortgat, Abbas Firoozabadi
2015 Computational Geosciences  
This is based on a combination of the mixed hybrid finite element (MHFE) method for total fluid velocity and discontinuous Galerkin (DG) method for the species transport.  ...  Numerical simulation of the so-called fingering is a challenge, which requires rigorous representation of the fluid flow and thermodynamics as well as highresolution discretization in order to minimize  ...  Different logics are implemented to balance this trade-off, which has resulted in a series of algorithms for compositional modeling in the literature.  ... 
doi:10.1007/s10596-015-9501-z fatcat:f4vmjoqf3nc2jifft5ehcbyml4

Abstracts on Pattern Formation and Lattice-Gas Automata [article]

Gary Doolen, Anna Lawniczak (Guelph Univ.)
1993 arXiv   pre-print
This article contains 39 pages of abstracts of invited and poster presentations for the FIELDS INSTITUTE FOR RESEARCH IN MATHEMATICAL SCIENCES AND NATO ADVANCED RESEARCH WORKSHOP PROGRAM ON PATTERN FORMATION  ...  and LATTICE-GAS AUTOMATA, JUNE 07-12, 1993  ...  A direct numerical attack seems impossible in the FCHC case because the phase space is too huge.  ... 
arXiv:comp-gas/9307004v1 fatcat:6yrkrd6pa5goxnmnyqycytptiy

Device and circuit simulation of quantum electronic devices

S. Mohan, J.P. Sun, P. Mazumder, G.I. Haddad
1995 IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems  
Research Group for RTD and other quantum devices having folded-back I-V.  ...  Gmin stepping that are used in commercial SPICE simulators.  ...  ACKNOWLEDGMENT The authors would like to thank the anonymous reviewers for meticulously reading the original manuscript and making numerous insightful recommendations that helped in improving the quality  ... 
doi:10.1109/43.387727 fatcat:d3n6bcus5rc6dkzqv2lsuj6ype

A spectral deferred correction strategy for low Mach number reacting flows subject to electric fields [article]

Lucas Esclapez, Valentina Ricchiuti, John B. Bell, Marcus S. Day
2019 arXiv   pre-print
We propose an algorithm for low Mach number reacting flows subjected to electric field that includes the chemical production and transport of charged species.  ...  Within the MISDC framework, this enables a close and stable coupling of diffusion, reactions and dielectric relaxation terms with advective transport and is shown to exhibit second-order convergence in  ...  For large non-linear systems encountered in multi-dimensional simulations, the computational cost and memory requirements of solving a linear system with a direct solver at each Newton iteration are prohibitive  ... 
arXiv:1904.08510v1 fatcat:aivcrgretzau5p2keg6iw3usfy
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