Browsing by Subject "American Institute of Physics Inc."
Now showing items 1-20 of 33
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Analysis of magnetohydrodynamic channel flow through complex network analysis
(2021)Velocity time series of hydrodynamic and magnetohydrodynamic (MHD) turbulent flow are analyzed by means of complex network analysis in order to understand the mechanism of fluid patterns modification due to the external ... -
An asynchronous interface relaxation method for multi-domain/multi-physics problems
(2016)An approach for the solution of multi-domain and multi-physics problems is the application of an interface relaxation (IR) method to treat the solution on the common boundaries between domains of the original problem. This ... -
The closeness of localized structures between the Ablowitz-Ladik lattice and discrete nonlinear Schrödinger equations: Generalized AL and DNLS systems
(2022)The Ablowitz-Ladik system, being one of the few integrable nonlinear lattices, admits a wide class of analytical solutions, ranging from exact spatially localized solitons to rational solutions in the form of the ... -
A combined clustering/symbolic regression framework for fluid property prediction
(2022)Symbolic regression techniques are constantly gaining ground in materials informatics as the machine learning counterpart capable of providing analytical equations exclusively derived from data. When the feature space is ... -
Computational analysis of transport across flake-filled composites of realistic microstructure
(2019)In this paper we present the results of a computational study of diffusion across disordered flake composites in which the flakes are misaligned with respect to the direction of bulk diffusion. We evaluate the effect of ... -
Confinement of volatile fission products in the crystalline organic electride Cs+(15C5)2•e-
(2022)The efficacy of filters to trap volatile radiotoxic nuclear fission products depends on the thermodynamic stability of these species within the filter material. Using atomic scale modeling based on density functional theory ... -
Darcy-Weisbach friction factor at the nanoscale: From atomistic calculations to continuum models
(2017)Amodification of the Darcy-Weisbach friction factor applicable to nanoscale liquid transport processes is proposed. Non-equilibrium molecular dynamics simulations allowus to access the atomic behaviour of liquids moving ... -
Detection of traffic incidents using nonlinear time series analysis
(2018)In this study, we present results of the application of nonlinear time series analysis on traffic data for incident detection. More specifically, we analyze daily volume records of Attica Tollway (Greece) collected from ... -
DSMC calculations of binary gas mixing in simple micro-sized configurations
(2019)The Direct Simulation Monte Carlo (DSMC) method is employed to model and simulate the mixing of two non-reactive gas streams in a simple two-dimensional micro-mixer. The efficiency of the mixing process in a mixer is related ... -
Effect of halogen doping on the electronic, electrical, and optical properties of anatase TiO2
(2022)Titanium dioxide (TiO2) is one of the most used oxides in renewable energy applications, such as hydrogen production, photovoltaics, and light-emitting diodes. To further improve the efficiency of the devices, doping ... -
Enumeration of the roots of Boolean matrices
(2018)The number of the roots of certain Boolean matrices is calculated in this paper. In particular, the roots of the Boolean Identity, Exchange, Total and Zero matrices are enumerated and an algorithmic method is introduced ... -
Exciting extreme events in the damped and AC-driven NLS equation through plane-wave initial conditions
(2021)We investigate, by direct numerical simulations and for certain parametric regimes, the dynamics of the damped and forced nonlinear Schrödinger (NLS) equation in the presence of a time-periodic forcing. It is thus revealed ... -
Existence of exponentially spatially localized breather solutions for lattices of nonlinearly coupled particles: Schauder's fixed point theorem approach
(2021)The problem of showing the existence of localized modes in nonlinear lattices has attracted considerable efforts not only from the physical but also from the mathematical viewpoint where a rich variety of methods have been ... -
Formation, doping, and lithium incorporation in LiFePO4
(2022)For over 25 years, lithium iron phosphate (LiFePO4) has been a material of interest for Li-ion batteries as it is environmentally benign, low cost, and structurally stable. Here, we employed density functional theory ... -
Fusing heterogeneous data for the calibration of molecular dynamics force fields using hierarchical Bayesian models
(2016)We propose a hierarchical Bayesian framework to systematically integrate heterogeneous data for the calibration of force fields in Molecular Dynamics (MD) simulations. Our approach enables the fusion of diverse experimental ... -
Hydrodynamics and ellipsoidal harmonics
(2018)This paper presents the theoretical basis for treating hydrodynamic problems in which the use of ellipsoidal harmonics is necessary. Those include the water wave diffraction problem, the wave resistance problem and the ... -
Impact of temperature and pressure on phase separation in the basal plane of Y0.77Pr0.23Ba2Cu3O7-δsingle crystals
(2022)Here, we study the impact of high hydrostatic pressure (up to 11 kbar) on the conductivity in the basal ab plane of Y0.77Pr0.23Ba2Cu3O7-δ single crystals. Conversely to YBa2Cu3O7-δ single crystals, it was found that high ... -
Influence of electron irradiation on fluctuation conductivity and pseudogap in YBa2Cu3O7-δsingle crystals
(2022)The effect of electron irradiation with the energy of 2.5 MeV on the temperature dependences of the resistivity ρ(T) of an optimally doped YBa2Cu3O7-δ single crystal has been studied. The temperature dependences of both ... -
Machine learning symbolic equations for diffusion with physics-based descriptions
(2022)This work incorporates symbolic regression to propose simple and accurate expressions that fit to material datasets. The incorporation of symbolic regression in physical sciences opens the way to replace "black-box"machine ... -
Microrotation viscosity effect on turbulent micropolar fluid channel flow
(2021)Fluids with an internal rigid microstructure, the so-called micropolar fluids, gain significant attention in many industrial, natural, and biological systems. Here, we study in detail the microrotation viscosity effect on ...