Results 11 to 20 of about 22,758 (262)

Modelling the catalyst fragmentation pattern in relation to molecular properties and particle overheating in olefin polymerization [PDF]

Polyolefins Journal, 2014
A two-dimensional single particle finite element model was used to examine the effects of particle fragmental pattern on the average molecular weights, polymerization rate and particle overheating in heterogeneous Ziegler-Natta olefin polymerization.
Mohsen Najafi, Mahmoud Parvazinia, Mir Hamid Reza Ghoreishy   +2 more
doaj   +1 more source

Modeling Grinding Processes—Mesh or Mesh-Free Methods, 2D or 3D Approach?

Journal of Manufacturing and Materials Processing, 2022
The objectives of this study are mainly two: (1) to validate whether a single grain scratch process can be modeled in two dimensions under the assumption of plane strain, and (2) to select the best discretization approach to model a single grain scratch ...
Praveen Sridhar, Juan Manuel Rodríguez Prieto, Kristin M. de Payrebrune   +2 more
doaj   +1 more source

Application of Finite Element Technique: A Review Study

Iraqi Journal of Chemical and Petroleum Engineering, 2023
The finite element approach is used to solve a variety of difficulties, including well bore stability, fluid flow production and injection wells, mechanical issues and others.
Ali Khaleel Faraj, Hassan Abdul Hadi Abdul Hussein   +1 more
doaj   +1 more source

Stress Recovery for the Particle-in-cell Finite Element Method

Physics of the Earth and Planetary Interiors, 2020
The interelement stress in the Finite Element Method is not continuous in nature, and stress projections from quadrature points to mesh nodes often causes oscillations. The widely used particle-in-cell method cannot avoid this issue and produces worse results when there are mixing materials of large strength (e.g., viscosity in Stokes problems ...
Moresi, Louis, Mansour, John, Yang, Haibin   +2 more
openaire   +4 more sources

Evaluating the performance of the particle finite element method in parallel architectures [PDF]

Computational Particle Mechanics, 2014
Fil: Gimenez, Juan Marcelo. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Santa Fe. Centro de Investigaciones En Metodos Computacionales. Universidad Nacional del Litoral.
Juan M. Gimenez, Norberto M. Nigro, Sergio R. Idelsohn   +2 more
openaire   +2 more sources

The Particle Finite Element Method for Multi-Fluid Flows [PDF]

, 2011
This paper presents the Particle Finite Element Method (PFEM) and its application to multi-fluid flows. Key features of the method are the use of a Lagrangian description to model the motion of the fluid particles (nodes) and that all the information is associated to the particles.
Idelsohn Barg, Sergio Rodolfo, Mier Torrecilla, Mónica de, Martí, Julio Marcelo, Oñate Ibáñez de Navarra, Eugenio   +3 more
openaire   +2 more sources

A State of the Art Review of the Particle Finite Element Method (PFEM) [PDF]

Archives of Computational Methods in Engineering, 2020
AbstractThe particle finite element method (PFEM) is a powerful and robust numerical tool for the simulation of multi-physics problems in evolving domains. The PFEM exploits the Lagrangian framework to automatically identify and follow interfaces between different materials (e.g. fluid–fluid, fluid–solid or free surfaces).
Cremonesi, Massimiliano, Franci, Alessandro, Idelsohn Barg, Sergio Rodolfo, Oñate Ibáñez de Navarra, Eugenio   +3 more
openaire   +2 more sources

An Image-Based Double-Smoothing Cohesive Finite Element Framework for Particle-Reinforced Materials

Mathematics, 2020
In order to simulate the fracture process of particle-reinforced materials on the micro-scale, an image-based double-smoothing cohesive finite element framework is proposed in the present paper.
Xiaoming Bai, Xue Mi, Hai Xie, Kaikai Shi, Furui Xiong, Yixiong Zhang, Licheng Guo   +6 more
doaj   +1 more source

Cosserat-particle finite element method for large deformation analysis of rock and soil

Yantu gongcheng xuebao, 2023
The particle finite element method (PFEM) inherits the solid mathematical foundation of the finite element method and possesses the capability of modeling the problems with large deformation and complex boundary, so it has been widely used in the fields ...
TANG Hongxiang 1, CUI Jiaming 2, ZHANG Xue 3, ZHANG Lei 1, LIU Letian 4
doaj   +1 more source

Axisymmetric viscous incompressible flow simulation by using the Particle finite element PFEM-2 method in the open source Kratos code

Труды Института системного программирования РАН, 2018
In this paper, the particle finite element method (PFEM-2) for the simulation of the axisymmetric flows of a viscous incompressible fluid is considered.
E. V. Smirnova, I. K. Marchevsky, V. O. Bondarchuk   +2 more
doaj   +1 more source