Results 21 to 30 of about 882,435 (290)

Fast computation of effective diffusivities using a semi-analytical solution of the homogenization boundary value problem for block locally-isotropic heterogeneous media

open access: yes, 2020
Direct numerical simulation of diffusion through heterogeneous media can be difficult due to the computational cost of resolving fine-scale heterogeneities.
Carr, Elliot J.   +2 more
core   +1 more source

Comparative Evaluation of the Fast Marching Method and the Fast Evacuation Method for Heterogeneous Media

open access: yesApplied Artificial Intelligence, 2021
The evacuation problem is usually addressed by assuming homogeneous media where pedestrians move freely in the presence of several exits and obstacles.
Severino F. Galán
doaj   +1 more source

Hydrodynamics of a Granular Gas in a Heterogeneous Environment

open access: yesEntropy, 2017
We analyze the transport properties of a low density ensemble of identical macroscopic particles immersed in an active fluid. The particles are modeled as inelastic hard spheres (granular gas).
Francisco Vega Reyes, Antonio Lasanta
doaj   +1 more source

Nonlocal peridynamic method for porous media seepage simulation

open access: yesRock and Soil Mechanics, 2021
Based on the establishment of peridynamic nonlocal porous media seepage model, several kernel functions reflecting the degree of nonlocal effect are introduced to improve the calculation accuracy, and the peridynamic permeability coefficients ...
MA Peng-fei   +5 more
doaj   +1 more source

A simple P-wave polarization analysis: its application to earthquake location

open access: yesAnnals of Geophysics, 1994
We present a method for hypocentral location which takes into account all three components of ground motion and not only the vertical one, as it is usually done by standard least-square techniques applied to arrival times.
M. Gasperini   +4 more
doaj   +1 more source

Finite-Difference Analysis of Influence of Borehole Diameter and Spacing on Reduction in Rockburst Potential of Burst-Prone Coal Seams

open access: yesMining
Decreasing the rockburst potential in longwall mining of burst-prone coal seams has been a longstanding challenge for geotechnical engineering worldwide.
Mikhail O. Eremin   +4 more
doaj   +1 more source

On the wave dynamics in damaged shells interacting with the volume of the cavitating liquid

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2016
We study the details of shock front propagation in the system of deformable medium (shells) with damages and two-phase liquid with gas or steam bubbles. We develop the models for the nonlinear processes of media interacting taking into account the phase ...
Vladimir A Petushkov
doaj   +1 more source

Random motion of a circle microswimmer in a random environment

open access: yesNew Journal of Physics, 2020
We simulate the dynamics of a single circle microswimmer exploring a disordered array of fixed obstacles. The interplay of two different types of randomness, quenched disorder and stochastic noise, is investigated to unravel their impact on the transport
Oleksandr Chepizhko, Thomas Franosch
doaj   +1 more source

Diffusion, subdiffusion, and trapping of active particles in heterogeneous media [PDF]

open access: yes, 2013
We study the transport properties of a system of active particles moving at constant speed in an heterogeneous two-dimensional space. The spatial heterogeneity is modeled by a random distribution of obstacles, which the active particles avoid.
Chepizhko, Oleksandr, Peruani, Fernando
core   +4 more sources

Stability of Breathers for a Periodic Klein–Gordon Equation

open access: yesEntropy
The existence of breather-type solutions, i.e., solutions that are periodic in time and exponentially localized in space, is a very unusual feature for continuum, nonlinear wave-type equations.
Martina Chirilus-Bruckner   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy