Results 1 to 10 of about 43,251,177 (344)

Prediction of Rubble-Stone Masonry Walls Response under Axial Compression Using 2D Particle Modelling

Buildings, 2022
To predict the structural behaviour of ancient stone masonry walls is still a challenging task due to their strong heterogeneity. A rubble-stone masonry modeling methodology using a 2D particle model (2D-PM), based on the discrete element method is ...
Nuno Monteiro Azevedo, Fernando F. S. Pinho, Ildi Cismaşiu, Murilo Souza   +3 more
doaj   +1 more source

A Flexible Particle Model for Rock Fracture: Validation and Assessment of the Influence of Deformability on the Macroscopic Response

Geotechnics, 2022
Circular/spherical rigid particle models that were initially applied to rock fracture studies were not able to match the ratio of the compressive strength to tensile strength that occurs in rock.
Nuno Monteiro Azevedo, Maria Luísa Braga Farinha, Sérgio Oliveira   +2 more
doaj   +1 more source

Implementation of a Lagrangian Stochastic Particle Trajectory Model (LaStTraM) to Simulate Concentration and Flux Footprints Using the Microclimate Model ENVI-Met

Atmosphere, 2021
The number of studies evaluating flux or concentration footprints has grown considerably in recent years. These footprints are vital to understand surface–atmosphere flux measurements, for example by eddy covariance.
Helge Simon, Jannik Heusinger, Tim Sinsel, Stephan Weber, Michael Bruse   +4 more
doaj   +1 more source

Numerical Evaluation of Transverse Steel Connector Strengthening Effect on the Behavior of Rubble Stone Masonry Walls under Compression Using a Particle Model

Buildings, 2023
The structural rehabilitation of historic/traditional rubble masonry wall constructions requires consolidation and retrofitting solutions to be employed in order to withstand dynamic loads, high vertical loads, and differential settlements.
Ildi Cismaşiu, Nuno Monteiro Azevedo, Fernando F. S. Pinho   +2 more
doaj   +1 more source

Simple Particle Model for Low-Density Granular Flow Interacting with Ambient Fluid

Geosciences, 2020
To understand the time evolutions of frontal speed and shape in a low-density granular flow, we propose a simple particle model. This model solves the equation of motion for each particle and simulates the time evolution of low-density granular flow ...
Hirofumi Niiya, Akinori Awazu, Hiraku Nishimori   +2 more
doaj   +1 more source

A Particle System Model for Dengue Transmission

Communication in Biomathematical Sciences, 2017
Dengue disease has been known for decades as a vector-borne disease which is rapidly spreading in many tropical and subtropical countries. The disease is transmitted mostly by female Aedes aegypty mosquitoes.
Mona Zevika, Edy Soewono, Oliver T.C. Tse   +2 more
doaj   +1 more source

Effect of Flow Rate and Filter Efficiency on Indoor PM2.5 in Ventilation and Filtration Control

Atmosphere, 2020
Ventilation and filtration control play a critical role in determining indoor PM2.5 (particles less than 2.5 μm in aerodynamic diameter) concentrations of outdoor or indoor origin in residential environments.
Ji-Hye Kim, Myoung-Souk Yeo
doaj   +1 more source

Back analysis of dynamic parameters of high earth-rock dam materials under weak earthquakes

Yantu gongcheng xuebao, 2020
In the case of weak earthquakes, a back analysis model considering interaction and radiation damping effects is proposed for dynamic parameters of earth-rock dams.
WANG Mao-hua 1, 2, CHI Shi-chun 1, 2, XIANG Biao 3, ZHOU Xiong-xiong 1, 2
doaj   +1 more source

Particle swarm optimization of a neural network model for predicting the flashover voltage on polluted cap and pin insulator

Diagnostyka, 2022
This paper proposes training an artificial neural network (ANN) by a particle swarm optimization (PSO) technique to predict the flashover voltage of outdoor insulators.
Belkebir Amel, Bourek Yacine, Benguesmia Hani   +2 more
doaj   +1 more source

Advanced Porous Particle Model in Biomass Pyrolysis

Chemical Engineering Transactions, 2022
In order to decrease anthropogenic CO2 emissions and to become independent from fossil resources, one alternative for energy generation and production of platform-chemicals is the usage of biomass.
Andrea Dernbecher, Alba Dieguez-Alonso
doaj   +1 more source