Results 291 to 300 of about 2,076,992 (352)

Numerical study on the anti-snow performance of deflectors in the bogie region of a high-speed train using the discrete phase model

Proceedings of the Institution of mechanical engineers. Part F, journal of rail and rapid transit, 2018
In this paper, the three-dimensional unsteady Reynolds-averaged Navier-Stokes equations with an RNG double-equation turbulence model and a discrete phase model were used for the investigation of snow accumulation on the bogie of a high-speed train.
G. Gao, Yan Zhang, F. Xie, J. Zhang, K. He, Jiabin Wang, Yani Zhang   +6 more
semanticscholar   +1 more source

Implementing Descriptive Sampling in Three-Phase Discrete Event Simulation Models

Journal of the Operational Research Society, 1993
Descriptive sampling has been shown to be a powerful method for obtaining variance reduction in discrete event simulation. This paper shows that the rewards of descriptive sampling can be easily obtained by modifying systems that currently use simple random sampling.
Saliby, Eduardo, Paul, Ray J.
openaire   +2 more sources

A discrete phase models of food production

1999
A method of process phase modeling is proposed based on cyclic data processing of both process variables and their qualitative estimates. The robustness of the method is presented for different process production phase and for multivariable conditions. The method is exemplified on the mixed flour pasta production line.
Jović, Franjo, Piližota, Vlasta, Ugarčić-Hardi, Žaneta, Jagnjić, Željko   +2 more
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A Discrete Particle Model for Bubble-Slug Two-Phase Flows

Journal of Computational Physics, 1993
Most two-phase flow models are based on the fully averaged two-fluid concept. This paper describes a new discrete particle model that is intermediate between the numerically intractable local instant description and the fully averaged two-fluid model, thereby providing a more detailed but still tractable description of dynamical two-phase flow ...
Trapp, John A., Mortensen, Glen A.
openaire   +2 more sources

A Discrete Phase Model for Ferroelectric Domain Evolution

ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 1, 2011
Discrete phase modeling utilizes a finite element framework with a Landau-Devonshire type multi-well potential as a material subroutine to model domain evolution in ferroelectrics. The time-dependent Ginzburg-Landau equation with polarization as an order parameter governs evolution of polarization. In the discrete phase method, the domain wall width is
Wen Dong, David Pisani, Christopher S. Lynch   +2 more
openaire   +1 more source

COMPUTATIONAL FLUID DYNAMICS DISCRETE PHASE MODELLING IN STORM SEWERS

Environmental Engineering and Management Journal, 2020
A Computational Fluid Dynamics (ANSYS Fluent CFD) software was applied for the examination of a critical combined sewer section of Budapest (Hungary) sewer network. The critical part of the main branch is located at a combined sewer overflow (CSO) which is implying environmental risk for the receiving water body.
Marcell Knolmar, Tamas Karches, Nikolett Balogh   +2 more
openaire   +1 more source

Discrete thermokinetic computational model of laser-induced phase transitions in phase-changing materials

Applied Physics Letters, 2023
This paper presents a thermokinetic computational model of phase transitions in GST225 (germanium–antimony–tellurium) thin films [as well as other phase change materials (PCMs)] induced and initiated by the impact of nano- and femtosecond laser pulses in a wide energy fluence range according to the results of experimental studies using Raman spectra ...
A. A. Nevzorov, V. A. Mikhalevsky, N. N. Eliseev, A. V. Kiselev, A. A. Burtsev, V. V. Ionin, D. N. Khmelenin, A. A. Lotin   +7 more
openaire   +1 more source

Finite element discretization of two-phase flow model

2011
In this chapter we treat finite element methods for the two-phase flow model in (6.59).We use a nested family of multilevel triangulations {Th} as explained in Sect. 3.1. In our applications these grids will be locally refined in a (small) neighborhood of the interface. In Sect. 7.2 we discuss a finite element method for discretization of the level set
Sven Gross, Arnold Reusken
openaire   +1 more source

Phase resetting dynamics for a discrete reaction–diffusion model

The Journal of Chemical Physics, 1990
The results of a study of spatial pattern formation in a two-dimensional oscillatory reaction–diffusion system are presented. The calculations are carried out on a discrete model of the Brusselator reaction. The system responds to inhomogeneous perturbations in two different ways.
Merk-Na Chee, Raymond Kapral, Stuart G. Whittington   +2 more
openaire   +1 more source

Reliability assessment for discrete time shock models via phase‐type distributions

Applied Stochastic Models in Business and Industry, 2020
In this paper, particular shock models are studied for the case when the times between successive shocks and the magnitudes of shocks have discrete phase‐type distributions. The well‐known shock models such as delta shock model, extreme shock model, and the mixed shock model which is obtained by combining delta and extreme shock models are considered ...
Serkan Eryilmaz, Cihangir Kan
openaire   +1 more source