Results 21 to 30 of about 559,173 (308)

DMC-TPE: tree-structured Parzen estimator-based efficient data assimilation method for phase-field simulation of solid-state sintering

Science and Technology of Advanced Materials: Methods, 2023
In phase-field simulations, accurate material parameters are required to quantitatively predict microstructural evolutions. Non-sequential data assimilations enable the estimation of unknown material parameters by minimizing a cost function that ...
Akimitsu Ishii, Akiyasu Yamamoto, Akinori Yamanaka   +2 more
doaj   +1 more source

Study on the mechanism of carbide precipitation by surface quenching treatment on GCr15 bearing rings based on the phase-field method

Frontiers in Materials, 2022
In this paper, the thermodynamics database describing Gibbs free energy of FCC phase and M23C6 phase based on Fe-Cr-C ternary alloy was coupled into phase field simulation, and the phase field model was developed on the mesoscopic scale which simulates ...
Qian Liu, Jiaxuan Jiang, Ming Chen, Xiaohu Deng, Jiangang Wang, Dongying Ju   +5 more
doaj   +1 more source

Phase field simulations in miscibility gaps [PDF]

Calphad, 2009
Abstract Using phase field simulations, it is possible to simulate the dynamics and morphology of immiscible liquids/solids appearing at the miscibility gap of any system. These simulations may also be used to determine the asymptotic compositions of the fluids for a given Gibbs energy.
Maria Helena Sousa Soares de Oliveira Braga, Joana Cassilda Rodrigues Espain de Oliveira, Luís Filipe Malheiros de Freitas Ferreira, J. A. Ferreira   +3 more
openaire   +2 more sources

Numerical simulation of single droplet dynamics in three-phase flows using ISPH [PDF]

, 2013
In this study, a new surface tension formulation for modeling incompressible, immiscible three-phase fluid flows in the context of incompressible smoothed particle hydrodynamics (ISPH) in two dimensions has been proposed.
Yıldız, Mehmet, Yildiz, Mehmet, Tofighi, Nima   +2 more
core   +1 more source

A Phase Field Model for Continuous Clustering on Vector Fields [PDF]

, 2001
A new method for the simplification of flow fields is presented. It is based on continuous clustering. A well-known physical clustering model, the Cahn Hilliard model, which describes phase separation, is modified to reflect the properties of the data to
Preusser, T, Preußer, Tobias,, Telea, Alexandru C., Garcke, H., Rumpf, M, Wijk, Jarke J. van,, Wijk, JJ Jarke = Jack van, Weikard, U., Telea, Alexandru C.,, Preusser, T., Telea, A.C., Garcke, Harald,, Rumpf, Martin,, Weikard, Ulrich,, Wijk, Jarke J. van, Garcke, Harald, Wijk, van, J.J., Rumpf, Martin, Weikard, U, Rumpf, M., Garcke, H, Preußer, Tobias, Telea, AC Alexandru, Weikard, Ulrich   +23 more
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Lattice Phase Field Model for Nanomaterials

, 2021
The lattice phase field model is developed to simulate microstructures of nanoscale materials. The grid spacing in simulation is rescaled and restricted to the lattice parameter of real materials. Two possible approaches are used to solve the phase field
Yongfeng Liang, Pingping Wu
core   +1 more source

Phase field simulations in ferroelectric materials [PDF]

PAMM, 2006
AbstractThe hindering of domain wall movement by defects in ferroelectric materials is closely connected to electric fatigue. A movable domain wall in a ferroelectric material in most cases is modelled as a singular surface which allows the use of configurational forces.
D. Schrade, R. Müller, D. Gross
openaire   +1 more source

Phase-field modelling of molecular dynamics

, 2022
Molecular dynamics simulation has been widely used to investigate underlying mechanisms of many phenomena from the atomic scale. However, it is often difficult for conventional molecular dynamics to treat a longer time scale because they are based on ...
Kairi, Masuda
core   +1 more source

Phase-field study of the effect of stress field and fission rate on intragranular Xe bubble evolution in U3Si2 nuclear fuel

Frontiers in Energy Research, 2023
Due to the superior thermal conductivity and high uranium density, U3Si2 is an excellent candidate for conventional UO2 nuclear fuel and shows great potential application in accident-tolerant fuel (ATF) assembly of light water reactors (LWRs). Currently,
Cong Ma, Caiyan Liu, Min Zhao, Tianyuan Xin, Lu Wu, Rongjian Pan, Jiantao Qin, Jing Zhang   +7 more
doaj   +1 more source

Multicomponent alloy solidification: Phase-field modeling and simulations

Physical Review E, 2005
A general formulation of phase-field models for nonisothermal solidification in multicomponent and multiphase alloy systems is derived from an entropy functional in a thermodynamically consistent way. General expressions for the free energy densities, for multicomponent diffusion coefficients, and for both weak and faceted types of surface energy and ...
Nestler, Britta, Garcke, H., Stinner, B.
openaire   +6 more sources