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We study the large-time behavior of Eulerian systems augmented with non-local alignment. Such systems arise as hydrodynamic descriptions of agent-based models for self-organized dynamics, e.g., Cucker-Smale and Motsch-Tadmor models…

Analysis of PDEs · Mathematics 2015-06-19 Eitan Tadmor , Changhui Tan

We develop an algorithm suitable for parallel molecular dynamics simulations in $d$ spatial dimensions and describe its implementation in C++. All routines work in arbitrary $d$; the maximum simulated $d$ is limited only by available…

Soft Condensed Matter · Physics 2022-05-18 Robert S. Hoy , Kevin A. Interiano-Alberto

The study of chemical reactions in aqueous media is very important for its implications in several fields of science, from biology to industrial processes. Modelling these reactions is however difficult when water directly participates in…

Chemical Physics · Physics 2021-03-24 Manyi Yang , Luigi Bonati , Daniela Polino , Michele Parrinello

Accurate and affordable simulation of supercritical reacting flow is of practical importance for developing advanced engine systems for liquid rockets, heavy-duty powertrains, and next-generation gas turbines. In this work, we present…

Fluid Dynamics · Physics 2023-12-11 Jiayang Xu , Yifan Xu , Zifeng Weng , Yuqing Cai , Runze Mao , Ruixin Yang , Zhi X. Chen

The slow dynamics in a glassy hard-sphere system is dominated by cage breaking events, i.e., rearrangements where a particle escapes from the cage formed by its neighboring particles. We study such events for an overdamped colloidal system…

Soft Condensed Matter · Physics 2016-10-26 Matthias Kohl , Andreas Härtel , Michael Schmiedeberg

This study investigates, by means of numerical simulations, extreme mechanical force exerted by a turbulent flow impinging on a bluff body, and examines the relevance of two distinct rare-event algorithms to efficiently sample these events.…

Computational Physics · Physics 2020-05-20 Thibault Lestang , Freddy Bouchet , Emmanuel Lévêque

On July 16, 1945, the Trinity nuclear test exploded in the desert near Alamogordo, NM. A variety of new diagnostic experiments were fielded in an effort to understand the detailed performance of the nuclear device. This article describes a…

History and Philosophy of Physics · Physics 2021-03-11 S. K. Hanson , W. J. Oldham

Droplet(s) breakup and coalescence have been simulated by the finite volume/moving mesh interface tracking method (MMIT) with adaptive mesh refining and coarsening. In this method, the interface is zero-thickness and moves in a Lagrangian…

Fluid Dynamics · Physics 2010-10-18 Shaoping Quan , Jing Lou

We present a brief numerical study of the Darwin-Fowler method applied to the analysis of the energy partition of essembles of bosons and fermions. We analyze the assertion of the existence of a "strong maximum" made in the original paper…

Nuclear Theory · Physics 2012-05-14 F. B. Guimaraes

Molecular dynamics is widely used to study various phenomena, such as diffusion, shock wave propagation, and plasma dynamics. A wide range of software packages supports the expanding scope of molecular dynamics applications. However, the…

Computational Physics · Physics 2025-12-01 I. S. Galtsov , R. V. Muratov , G. V. Vyskvarko , S. A. Murzov , S. A. Dyachkov , P. R. Levashov

Computer architecture design space is vast and complex. Tools are needed to explore new ideas and gain insights quickly, with low efforts and at a desired accuracy. We propose Calipers, a criticality-based framework to model key…

Performance · Computer Science 2022-01-19 Hossein Golestani , Rathijit Sen , Vinson Young , Gagan Gupta

In this work we study the dynamic behaviour of compound shells of revolution partially filled with an ideal incompressible fluid based on boundary-value problems. New analytical mathematical model with corresponding discrete scheme for the…

Computational Engineering, Finance, and Science · Computer Science 2016-06-15 Iryna Kononenko , Oleksiy Kononenko

Many observations in the dynamics of pedestrian crowds, including various self-organization phenomena, have been successfully described by simple many-particle models. For ethical reasons, however, there is a serious lack of experimental…

Physics and Society · Physics 2007-05-23 Dirk Helbing , Anders Johansson , Habib Zein Al-Abideen

Investigations have shown that the collective motion not only appears in nucleus-nucleus but also in p-p collisions. The best tool for depicting such collective motion is relativistic hydrodynamics. In this paper, the collective motion is…

Nuclear Theory · Physics 2016-02-04 Z. J. Jiang , H. P. Deng , Y. Huang

Elliptic flow of the hot, dense system which has been created in nucleus-nucleus collisions develops as a response to the initial azimuthal asymmetry of the reaction region. Here it is suggested that the magnitude of this response shows a…

Nuclear Theory · Physics 2009-10-31 Heinz Sorge

The deep learning technique has been applied for the first time to investigate the possibility of centrality determination in terms of the number of participants ($N_{\mathrm{part}}$) in high-energy heavy-ion collisions. For this purpose,…

High Energy Physics - Phenomenology · Physics 2023-08-16 Dipankar Basak , Kalyan Dey

Transition state theory is a standard framework for predicting the rate of a chemical reaction. Although the transition state theory has been successfully applied to numerous chemical reaction analyses, many experimental and theoretical…

The accurate simulation of additional interactions at the ATLAS experiment for the analysis of proton-proton collisions delivered by the Large Hadron Collider presents a significant challenge to the computing resources. During the LHC Run…

High Energy Physics - Experiment · Physics 2022-02-23 ATLAS Collaboration

In this paper, we experimentally explore the formation, evolution and breakup of Armstrong liquid bridge. The extremely complicated evolution stage is revealed, which involves many coupled processes including the morphology change, current…

Fluid Dynamics · Physics 2021-09-06 Xueqin Pan , Man Hu , Bingrui Xu , Feng Wang , Peng Huo , Fangqi Chen , Zhibo Gu , Daosheng Deng

The partition function of nonequilibrium distribution which we recently obtained [arXiv:0802.0259] in the framework of the maximum isotropization model (MIM) is exploited to extract physical information from experimental data on the proton…

Nuclear Theory · Physics 2008-04-11 Dmitry Anchishkin , Stanislav Yezhov
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