نتایج جستجو برای: multiphase modeling

تعداد نتایج: 395613  

1994
Jeffrey Yepez

This paper presents a new lattice-gas method for molecular dynamics modeling. A mean field treatment is given and is applied to a linear stability analysis. Exact numerical simulations of the solid-phase crystallization is presented, as is a finite-temperature multiphase liquid-gas system. The lattice-gas method, a discrete dynamical method, is therefore capable of representing a variety of col...

1997
IVAN YOTOV Ivan Yotov

| Mixed nite element methods on multiblock domains are considered for nonlinear degenerate parabolic equations arising in modeling multiphase ow in porous media. The subdomain grids need not match on the interfaces, where mortar nite element spaces are introduced to properly impose ux-matching conditions. The low regularity of the solution is treated through time integration, and the degeneracy...

Journal: :Computers & Graphics 2017
Christoph Gissler Stefan Band Andreas Peer Markus Ihmsen Matthias Teschner

Computing the forces acting from a surrounding air phase onto a particle-based fluid or rigid object is challenging. Simulating the air phase and modeling the interactions using a multiphase approach is computationally expensive. Furthermore, stability issues may arise in such multiphase simulations. In contrast, the effects from the air can be approximated efficiently by employing a drag equat...

Journal: :Mathematics and Computers in Simulation 2010
Emad A. El-Sebakhy

Numerous techniques have been used to identify flow-regimes and liquid holdup in horizontal multiphase flow, but often neither perform well nor very accurate. Recently, neuro-fuzzy inference systems learning scheme have been gaining popularity in its capability for solving both prediction and classification problems. It is a hybrid intelligent systems scheme that is able to forecast an output i...

2008
Yu-Shu Wu Guan Qin

A physically based numerical approach is presented for modeling multiphase flow and transport processes in fractured rock. In particular, a general framework model is discussed for dealing with fracture-matrix interactions, which is applicable to both continuum and discrete fracture conceptualization. The numerical modeling approach is based on a general multiple-continuum concept, suitable for...

2014
Mohamed Mahmoud Ismail

The area of multiphase variable-speed motor drives in general and multiphase induction Motor drives in particular have experienced a substantial growth since the beginning of this century. Research has been conducted worldwide and numerous interesting developments have been reported in the literature. An attempt is made to provide a detailed overview of the current state-ofthe-art in this area....

Journal: :international journal of iron & steel society of iran 2009
h. zakerinia a. kermanpur a. najafizadeh

color metallography is a useful method for characterizing microstructures of steels with multiple phases. in this paper, application of three different color etching techniques for a bainitic-martensitic steel is reported. comparisons between the results showed that 10% na2s2o5 aqueous solution was the best etchant for distinguishing martensite, bainite and ferrite phases. the obtained microgra...

Journal: :Applied sciences 2021

This paper proposes the use of a regularized mixture linear experts (MoLE) for predictive modeling in multimode-multiphase industrial processes. For this purpose, different MoLE were evaluated, namely, through elastic net (EN), Lasso, and ridge regression (RR) penalties. Their performances compared when trained with numbers samples, comparison to other nonlinear models. The models evaluated on ...

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