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Parallel Algorithm with Modulus Structure for Simulation of Seismic Wave Propagation in 3D Multiscale Multiphysics Media [chapter]

Victor Kostin, Vadim Lisitsa, Galina Reshetova, Vladimir Tcheverda
2017 Lecture Notes in Computer Science  
(KIAM RAS) Performance aspects of collocated and staggered grids for Particle-in-Cell plasma simulation Sergey Bastrakov, Igor Surmin, Evgeny Efimenko, Arkady Gonoskov, Iosif Meyerov Software implementation  ...  drug screening using BOINC-based desktop grid Natalia Nikitina, Evgeny Ivashko, Andrei Tchernykh The optimization of traffic management for cloud application and services in the virtual data center Denis  ... 
doi:10.1007/978-3-319-62932-2_4 fatcat:3floyq6ajjeb5aqf5ehcgnu7qe

A particle-in-cell method for the simulation of plasmas based on an unconditionally stable field solver

Eric M. Wolf, Matthew Causley, Andrew Christlieb, Matthew Bettencourt
2016 Journal of Computational Physics  
We propose a new particle-in-cell (PIC) method for the simulation of plasmas based on a recently developed, unconditionally stable solver for the wave equation.  ...  We describe the implementation in one and two dimensions for both electrostatic and electromagnetic cases, and present the results of several standard test problems, showing good agreement with theory  ...  The resulting separation of charge produces cold plasma oscillation. In the 1D simulation, we set L x = 2π and = 0.1. We use a 100 cell grid and take ∆t = 0.1, and we use N p = 3600 particles.  ... 
doi:10.1016/ fatcat:ieqgy2fp5vfgpc56bgygatbrna


Takanobu Amano
2016 Astrophysical Journal  
A new multidimensional simulation code for relativistic two-fluid electrodynamics (RTFED) is described.  ...  or an electron-proton plasma.  ...  Notice that this definition differs from the conventional Yee mesh, which is often employed in Particle-In-Cell (PIC) simulations.  ... 
doi:10.3847/0004-637x/831/1/100 fatcat:d4wzudurubcq5f5qswwrialpaq

Constrained transport and adaptive mesh refinement in the Black Hole Accretion Code

H. Olivares, O. Porth, J. Davelaar, E. R. Most, C. M. Fromm, Y. Mizuno, Z. Younsi, L. Rezzolla
2019 Astronomy and Astrophysics  
The CT methods and AMR strategies discussed here are being employed in the simulations performed with BHAC used in the generation of theoretical models for the Event Horizon Telescope Collaboration.  ...  This motivates the development of models for magnetohydrodynamic flows in strong gravitational fields.  ...  The simulations were performed in part on the SuperMUC cluster at the LRZ in Garching, the LOEWE cluster at the CSC in Frankfurt, the Iboga cluster at the ITP Frankfurt, the HazelHen cluster at the HLRS  ... 
doi:10.1051/0004-6361/201935559 fatcat:dqplesv63fddzpwkzrxyqcxefe

Immersed boundary simulations of cell-cell interactions in whole blood [article]

Andrew Kassen, Aaron Barrett, Varun Shankar, Aaron L. Fogelson
2021 arXiv   pre-print
We present a new method for the geometric reconstruction of elastic surfaces simulated by the immersed boundary method with the goal of simulating the motion and interactions of cells in whole blood.  ...  We find red blood cells to be crucial for understanding the motion of platelets, to the point that the geometry of the vessel wall has a negligible effect in the presence of RBCs.  ...  Kirby for access to computing resources at SCI Institute. A. T. K., A. B., and A.  ... 
arXiv:2108.09396v1 fatcat:v5dc4px4anajzbhxzohdnb6bjq

Verification of BOUT++ by the method of manufactured solutions

B. D. Dudson, J. Madsen, J. Omotani, P. Hill, L. Easy, M. Løiten
2016 Physics of Plasmas  
It has been used to simulate a wide range of plasma phenomena ranging from linear stability analysis to 3D plasma turbulence, and is capable of simulating a wide range of drift-reduced plasma fluid and  ...  BOUT++ is a software package designed for solving plasma fluid models.  ...  To test boundary conditions and handling of staggered variables, this test was performed in x and then in y (replacing x with y=2p in the above manufactured solutions).  ... 
doi:10.1063/1.4953429 fatcat:rbq7sn272bbt5pimbo5yg5fmry


O. Porth, C. Xia, T. Hendrix, S. P. Moschou, R. Keppens
2014 Astrophysical Journal Supplement Series  
With the new distinction between active and passive grid cells, MPI-AMRVAC is ideally suited to simulate evolutions where parts of the solution are controlled analytically, or have a tendency to progress  ...  In this paper we present an update on the open source MPI-AMRVAC simulation toolkit where we focus on solar- and non-relativistic astrophysical magneto-fluid dynamics.  ...  (particle in cell) simulations have been performed to date (see the discussion in .  ... 
doi:10.1088/0067-0049/214/1/4 fatcat:z6pck7in5fdrxdf4rw62dfyzae

Exploiting Laboratory and Heliophysics Plasma Synergies

Jill Dahlburg, William Amatucci, Michael Brown, Vincent Chan, James Chen, Christopher Cothran, Damien Chua, Russell Dahlburg, George Doschek, Jan Egedal, Cary Forest, Russell Howard (+14 others)
2010 Energies  
Research synergies for these new tools are primarily in the areas of magnetic reconnection, plasma charged particle acceleration, plasma wave propagation and turbulence in a diverging magnetic field, plasma  ...  Recent advances in space-based heliospheric observations, laboratory experimentation, and plasma simulation codes are creating an exciting new cross-disciplinary opportunity for understanding fast energy  ...  Acknowledgements This review was supported by the Naval Research Laboratory and the Office of Naval Research. Conversations with Thomas Mehlhorn (NRL PPD Superintendent) are gratefully acknowledged.  ... 
doi:10.3390/en30501014 fatcat:vq5pkd4k45fctkq4ddipu25cha

Interaction of a thin shock with turbulence. I. Effect on shock structure: Analytic model

Xianzhi Ao, Gary P. Zank, Nikolai V. Pogorelov, Dastgeer Shaikh
2008 Physics of Fluids  
It has been used to simulate a wide range of plasma phenomena ranging from linear stability analysis to 3D plasma turbulence and is capable of simulating a wide range of drift-reduced plasma fluid and  ...  BOUTþþ is a software package designed for solving plasma fluid models.  ...  To test boundary conditions and handling of staggered variables, this test was performed in x and then in y (replacing x with y=2p in the above manufactured solutions).  ... 
doi:10.1063/1.3041706 fatcat:gjlu5lc4x5cyfbsrja27kmvgku

Investigating the influence of magnetic fields upon structure formation with amiga- a c code for cosmological magnetohydrodynamics

Timur Doumler, Alexander Knebe
2010 Monthly notices of the Royal Astronomical Society  
It combines an N-body code with an Eulerian grid-based solver for the full set of MHD equations in order to conduct simulations of dark matter, baryons and magnetic fields in a self-consistent way in a  ...  As a tool for carrying out such simulations, we present our new numerical code AMIGA.  ...  The simulations presented herein have been performed on the BABEL cluster at the Astrophysical Institute Potsdam (AIP).  ... 
doi:10.1111/j.1365-2966.2009.16144.x fatcat:ck7lawfdmndyhnsatqp34hfxni

A Multiscale Haemorheological Computer-Based Model of Atherosclerosis: An In-Depth Investigation of Erythrocytes-Driven Flow Characteristics in Atheroma Development

Glaucia C Pereira
2016 Journal of Biomedical Engineering and Medical Devices  
The latest seems to be caused by the momentum interchange due to the collision of the particles (blood cells) with each other, with the vessel wall, and with the fluid phase (plasma).  ...  The cellular composition of the blood was modelled using a multiphase fluid dynamics method by computing both an Eulerian fluid domain for modelling blood plasma, and a Lagrangian solid domain that represented  ...  Simeoni is thanked for kindly receiving the author during a research visit at the University of Sao Paulo (USP). Dr.  ... 
doi:10.4172/2475-7586.1000119 fatcat:fx2md5rknfcqvifudkqslwzt44

In-situ visualization library for Yin-Yang grid simulations

Nobuaki Ohno, Akira Kageyama
2021 Earth, Planets and Space  
We propose an in-situ visualization method dedicated to the Yin-Yang grid simulations and demonstrate its effectiveness through sample simulations.  ...  The selection of an appropriate method or tool is essential to efficiently perform in-situ visualization in parallelized large-scale computer simulations that run on supercomputers.  ...  A part of this work was performed on "Plasma Simulator" (NEC SX-Aurora TSUBASA) of NIFS with the support and under the auspices of the NIFS Collaboration Research program (NIFS15KNSS062).  ... 
doi:10.1186/s40623-021-01485-2 fatcat:32qqjalpg5d6rdwnjzan32lyjm


2019 2019 PhotonIcs & Electromagnetics Research Symposium - Spring (PIERS-Spring)  
High-speed Target for Random PRI and Staggered PW Radar . . . . . . . 1037 The Use of Phase-shift Keyed Signals with a Zero Autocorrelation Zone in a Multi-position Radar System for Searching and Detecting  ...  Propagation in a Dust Plasma of a DC Glow Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1327 Analysis and Optimization of Microwave Transmission in a Magnetized Plasma-Metal  ... 
doi:10.1109/piers-spring46901.2019.9017748 fatcat:lmmr7cnm7nelbbz3f6arofik4q

Multidimensional Hall magnetohydrodynamics with isotropic or anisotropic thermal pressure: Numerical scheme and its validation using solitary waves

Marek Strumik, Krzysztof Stasiewicz
2017 Journal of Computational Physics  
We present a numerical solver for plasma dynamics simulations in Hall magnetohydrodynamic (HMHD) approximation in one, two and three dimensions.  ...  Quantitative tests of accuracy and performance of the implemented code show the fidelity of the proposed approach.  ...  The discussion presented in the paper reflects only the authors' view and the European Commission is not responsible for any use that may be made of the information it contains.  ... 
doi:10.1016/ fatcat:sziksj6mtbcrlbeceefrtyjcbq

Modelling Seismic Wave Propagation for Geophysical Imaging [chapter]

Jean Virieux, Vincent Etienne, Victor Cruz-Atienza, Romain Brossier, Emmanuel Chaljub, Olivier Coutant, Stphane Garambois, Diego Mercerat, Vincent Prieux, Stphane Operto, Alessandra Ribodetti, Josu Tago
2012 Seismic Waves - Research and Analysis  
Acknowledgements We are gratefull to René-Édouard Plessix (SHELL) and Henri Calandra (TOTAL) for fruitful discussions. This work was partially performed using HPC resources from GENCI-  ...  Cell structure for the full staggered grid (top), the partial staggered grid (bottom left) and the full grid (bottom right, Stress tensor is denoted by σ, particle velocity by v and the density by ρ as  ...  This pattern results from the fact that one cell out of two is excited in the DG formulation because the DG stencil does not embed a staggered-grid structure (the unexcited grid is not stored in staggered-grid  ... 
doi:10.5772/30219 fatcat:4h2ysh6dsfefnga6ystdvyqbxe
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