نتایج جستجو برای: discrete particle model

تعداد نتایج: 2350579  

Journal: :ChemEngineering 2021

This work proposes a model of particle agglomeration in elastic valves replicating the geometry and fluid dynamics venous valve. The is simulated with Smooth Particle Hydrodynamics, leaflets valve Lattice Spring Model, while modelled 4-2 Lennard-Jones potential. All models are combined together within single Discrete Multiphysics framework. results show that occurs near leaflets, supporting hyp...

1993
Dmytro Ivanovsky

We propose the deterministic dynamics of a free particle in a physical vacuum, which is considered as a discrete (quantum) medium. The motion of the particle is studied taking into account its interactions with the medium. It is assumed that this interaction results in the appearance of special virtual excitations, called ”inertons,” in the vacuum medium in the surroundings of the canonical par...

Journal: :international journal of industrial engineering and productional research- 0
amin vahidi tehran, iran, tel: +989183161027 alireza aliahmadi tehran, iran, tel: +989183161027 mohammad reza hamidi tehran, iran, tel: +989183161027 ehsan jahani tehran, iran, tel: +989183161027

this paper offers an approach that could be useful for diverse types of layout problems or even area allocation problems. by this approach there is no need to large number of discrete variables and only by few continues variables large-scale layout problems could be solved in polynomial time. this is resulted from dividing area into discrete and continuous dimensions. also defining decision var...

2008
J. Squire H. Qin W. M. Tang

A fully variational, unstructured, electromagnetic particle-in-cell integrator is developed for integration of the Vlasov-Maxwell equations. Using the formalism of Discrete Exterior Calculus [1], the field solver, interpolation scheme and particle advance algorithm are derived through minimization of a single discrete field theory action. As a consequence of ensuring that the action is invarian...

2008
D. Volchenkov

Two dimensional stochastic time model of scrape-off layer (SOL) turbulent transport is studied. Instability arisen in the system with respect to the stochastic perturbations of both either density or vorticity reveals itself in the strong outward bursts of particle density propagating ballistically across the SOL. The stability and possible stabilization of the cross-field turbulent system depe...

2012
Amarjit Soni

We present a very simple 4th-generation (4G) model with an Abelian gauge interaction under which only the 4G fermions have nonzero charge. The U(1) gauge symmetry can have a Z2 residual discrete symmetry (4G-parity), which can stabilize the lightest 4G particle (L4P). When the 4G neutrino is the L4P, it would be a neutral and stable particle and the other 4G fermions would decay into the L4P le...

2012
Rasim M. Alguliev Ramiz M. Aliguliyev Chingiz A. Mehdiyev

We model document summarization as a nonlinear 0-1 programming problem where an objective function is defined as Heronian mean of the objective functions enforcing the coverage and diversity. The proposed model implemented on a multi-document summarization task. Experiments on DUC2001 and DUC2002 datasets showed that the proposed model outperforms the other summarization methods. Index Terms – ...

2014
A. R. Thornton

In the past ten years much work has been undertaken on developing mixture theory continuum models to describe kinetic sieving-driven size segregation. We propose an extension to these models that allows their application to bidisperse flows over inclined channels, with particles varying in density and size. Our model incorporates both a recently proposed explicit formula for how the total press...

1993
Dmytro Ivanovsky

We propose the deterministic dynamics of a free particle in a physical vacuum, which is considered as a discrete (quantum) medium. The motion of the particle is studied taking into account its interactions with the medium. It is assumed that this interaction results in the appearance of special virtual excitations, called ”inertons,” in the vacuum medium in the surroundings of the canonical par...

Masoud Mirzaei Kalani Mehdi Seifbarghy Mojtaba Hemmati

This paper formulates a two-echelon single-producer multi-buyer supply chain model, while a single product is produced and transported to the buyers by the producer. The producer and the buyers apply vendor-managed inventory mode of operation. It is assumed that the producer applies economic production quantity policy, which implies a constant production rate at the producer. The operational pa...

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