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Understanding the fundamental mechanisms of single-atom catalysis (SAC) is important to design systems with improved performance and stability. This is problematic, however, because single-atom active sites are extremely difficult to…

材料科学 · 物理学 2017-06-30 Gareth S. Parkinson

The convergence to equilibrium for renormalised solutions to nonlinear reaction-diffusion systems is studied. The considered reaction-diffusion systems arise from chemical reaction networks with mass action kinetics and satisfy the complex…

偏微分方程分析 · 数学 2018-05-09 Klemens Fellner , Bao Q. Tang

Variational and diffusion quantum Monte Carlo (VMC and DMC) methods with Slater-Jastrow-backflow trial wave functions are used to study the spin-polarized three-dimensional uniform electron fluid. We report ground state VMC and DMC energies…

强关联电子 · 物理学 2025-11-11 Sam Azadi , N. D. Drummond , Sam. M. Vinko

We present an explicit finite difference method to simulate the non-ideal multi-phase fluid flow. The local density and the momentum transport are modeled by the Navier-Stokes (N-S) equations and the pressure is computed by the Van der…

流体动力学 · 物理学 2023-07-12 Chunheng Zhao , Alexandre Limare , Stephane Zaleski

Density Functional Theory (DFT) calculations have been widely used to predict the activity of catalysts based on the free energies of reaction intermediates. The incorporation of the state of the catalyst surface under the electrochemical…

Multi-color Stochastic Rotation Dynamics (SRDmc) has been introduced by Inoue et al. as a particle based simulation method to study the flow of emulsion droplets in non-wetting microchannels. In this work, we extend the multi-color method…

软凝聚态物质 · 物理学 2020-05-11 Thomas Hiller , Marta Sanchez de La Lama , Martin Brinkmann

In recent years, molecular dynamics (MD) simulations have emerged as a pivotal tool for understanding the structure, dynamics, and phase behavior in charged soft matter systems. To explore phenomena across greater length and time scales in…

计算物理 · 物理学 2024-07-18 Benjamin Bobin Ye , Shensheng Chen , Zhen-Gang Wang

Recent experiments (Guan et al. 2016a,b) showed many interesting phenomena on dynamic contact angle hysteresis while there is still a lack of complete theoretical interpretation. In this work, we study the time averaging of the apparent…

流体动力学 · 物理学 2022-02-16 Zhen Zhang , Xianmin XU

Diffusion-mediated surface phenomena are crucial for human life and industry, with examples ranging from oxygen capture by lung alveolar surface to heterogeneous catalysis, gene regulation, membrane permeation and filtration processes.…

统计力学 · 物理学 2020-08-19 Denis S. Grebenkov

Conventional methods for modeling thermocatalytic systems are typically based on the Kohn-Sham density functional theory (KS-DFT), neglecting the inhomogeneous distributions of gas molecules in the reactive environment. However, industrial…

化学物理 · 物理学 2025-08-14 Jikai Sun , Jianzhong Wu

Outer boundary conditions for strongly and symmetric hyperbolic formulations of 3D Einstein's field equations with a live gauge condition are discussed. The boundary conditions have the property that they ensure constraint propagation and…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Olivier Sarbach , Manuel Tiglio

The plasma edge flow, situated at the intricate boundary between plasma and neutral particles, plays a pivotal role in the design of nuclear fusion devices such as divertors and pumps. Traditional numerical simulation methods, such as the…

计算物理 · 物理学 2024-11-14 Yifan Wen , Yanbing Zhang , Lei Wu

In this paper the normal collision of spherical particles is investigated. The particle interaction is modelled in a macroscopic way using the Hertzian contact force with additional linear damping. The goal of the work is to develop an…

流体动力学 · 物理学 2016-03-02 Shouryya Ray , Tobias Kempe , Jochen Fröhlich

Oscillatory reconnection is a specific type of time-dependent reconnection which involves periodic changes in the magnetic topology of a null point. The mechanism has been reported for a variety of magnetic field strengths and…

太阳与恒星天体物理 · 物理学 2024-10-25 Luiz A. C. A. Schiavo , Gert J. J. Botha , James A. McLaughlin

Many immersed boundary methods solve for surface stresses that impose the velocity boundary conditions on an immersed body. These surface stresses may contain spurious oscillations that make them ill-suited for representing the physical…

流体动力学 · 物理学 2016-07-20 Andres Goza , Sebastian Liska , Benjamin Morley , Tim Colonius

A method for making realistic estimates of the density of levels in even-even nuclei is presented making use of the Monte Carlo shell model (MCSM). The procedure follows three basic steps: (1) computation of the thermal energy with the…

核理论 · 物理学 2009-10-30 W. E. Ormand

Accurate prediction of phase equilibria remains a central challenge in chemical engineering. Physics-consistent machine learning methods that incorporate thermodynamic structure into neural networks have recently shown strong performance…

机器学习 · 计算机科学 2026-03-17 Karim K. Ben Hicham , Moreno Ascani , Jan G. Rittig , Alexander Mitsos

We study and implement a simple method, based on the Perfectly Matched Layer approach, to treat non reflecting boundary conditions with the Smoothed Particles Hydrodynamics numerical algorithm. The method is based on the concept of physical…

计算物理 · 物理学 2012-02-28 Molteni Diego , Rosario Grammauta , Enrico Vitanza

In this paper, we present a unified nonequilibrium model of continuum mechanics for compressible multiphase flows. The model, which is formulated within the framework of Symmetric Hyperbolic Thermodynamically Compatible (SHTC) equations,…

数值分析 · 数学 2024-04-02 Davide Ferrari , Ilya Peshkov , Evgeniy Romenski , Michael Dumbser

We use the Direct Simulation Monte Carlo (DSMC) method combined with an n-body code to study the dynamics of the interaction between a gas-rich spiral galaxy and intracluster or intragroup medium, often known as the ram pressure scenario.…

宇宙学与河外天体物理 · 物理学 2015-06-15 Martin D. Weinberg