نتایج جستجو برای: multiphase model

تعداد نتایج: 2109039  

2000
Daisuke Nagai Martin E. Sulkanen

Constraints on the clustered mass density Ωm of the universe derived from the observed population mean intracluster gas fraction 〈fICM 〉 of X–ray clusters may be biased by reliance on a single-phase assumption for the thermodynamic structure of the intracluster medium (ICM). We propose a descriptive model for multiphase structure in which a spherically symmetric ICM contains isobaric density pe...

2010
Seckin Gokaltun Dwayne McDaniel

In this paper, the lattice Boltzmann method is reviewed for specific applications to numerical simulation of multiphase flow problems. A thorough literature review regarding the multi-phase lattice Boltzmann method was conducted with special focus on flows with large density and viscosity ratios between the two phases. A multiphase model with the capability of handling large-density-ratios is c...

Journal: Gas Processing 2013
Elahe Bahramifar Maryam Mazarei Sotoodeh Rahbar Rahimi,

Multiphase flows are commonly encountered in oil and gas industries. The transport of multiphase flow causes the formation of slug, the increase of pressure drop and the possibility of phase changes therefore, a set of simulation runs was performed to predict flow regimes in a horizontal pipeline, and the results were compared with the Baker chart. The effects of small downward inclinations of ...

2011
Noha Youssry El-Zehiry Leo Grady

The Mumford-Shah model has been one of the most powerful models in image segmentation and denoising. The optimization of the multiphase Mumford-Shah energy functional has been performed using level sets methods that optimize the Mumford-Shah energy by evolving the level sets via the gradient descent. These methods are very slow and prone to getting stuck in local optima due to the use of the gr...

Journal: :CoRR 2018
Nikolai Andrianov

We are concerned with robust and accurate forecasting of multiphase flow rates in wells and pipelines during oil and gas production. In practice, the possibility to physically measure the rates is often limited; besides, it is desirable to estimate future values of multiphase rates based on the previous behavior of the system. In this work, we demonstrate that a Long Short-Term Memory (LSTM) re...

2016
Lana L. Huberty Stephen D. Ross

The multiphase leisure experience looks at the experience as a five phase process that includes anticipation, travel to, onsite behavior, travel from, and recollection. This continuum depicts a dynamic experience, one that evolves and matures across the five phases. The purpose of this study is to take this model and apply it to sport events. Understanding sport events as a multiphase experienc...

Journal: :IEICE Transactions 2010
Young-Seok Park Pyung-Su Han Woo-Young Choi

Multiphase clocks are very useful for realizing high-speed data processing systems with low-speed circuit elements. Triggered in sequence by equally-spaced N-phase clock signals, multiphase systems can achieve N-times higher operating frequencies than single-phase clocked systems. For this reason, multiphase clocks are often used for such applications as high-speed analog-digital converters (AD...

Magneto-electro-elastic materials are multiphase smart materials that exhibit coupling among electrical, magnetic and mechanical energy fields. Due to this ability, they have been the topic of numerous research in the past decade. In this paper, buckling behavior of a multiphase magneto-electro-elastic rectangular plate with simply supported boundary conditions is investigated, based on Reddy’s...

2011
Reza Maddahian Bijan Farhanieh

In this research the separation efficiency of deoiling hydrocyclone is evaluated using three-dimensional simulation of multiphase flow based on Eulerian-Eulerian finite volume method. The mixture approach of Reynolds Stress Model is also employed to capture the features of turbulent multiphase swirling flow. The obtained separation efficiency of Colman's design is compared with available experi...

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