Results 181 to 190 of about 18,695 (204)
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Two phase analysis of sloshing in a rectangular container with Volume of Fluid (VOF) methods
Ocean Engineering, 2013Abstract Free surface oscillations of a liquid confined in a closed container (sloshing phenomenon) are an important issue when big amounts of liquid are industrially transported. The phenomenon involves two fluids that share a free surface boundary separating them, normally the density of the upper fluid is several orders of magnitude less than the ...
Jesús Gómez-Goñi +3 more
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Volume-of-fluid (VOF) simulations of rise of single/multiple bubbles in sheared liquids
Chemical Engineering Science, 2010Abstract The understanding of the lift force, which governs the lateral migration of bubbles, is important to improve closures for continuum flow models that are used to simulate large-scale dispersed gas–liquid flows. In the present work, the effect of bubble size/shape and more importantly the effect of neighboring bubbles on the magnitude and ...
Swapna S. Rabha, Vivek V. Buwa
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Optimization of a High Pressure Swirl Injector by Using Volume-of-Fluid (VOF) Method
ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis, Volume 3, 2010In this paper, the effects of various geometric parameters of a high pressure swirl Gasoline Direct Injector (GDI) on the injection flow quality are investigated. The two-dimensional axisymmetric Navier-Stokes equations coupled with the Volume-of-Fluid (VOF) method were employed for simulation of the formation mechanism of the liquid film inside the ...
Mohammad Rezaeimoghaddam +4 more
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The Direct Numerical Simulation of the Rising Gas Bubble With the Volume of Fluid (VOF) Method
Volume 6: Fluids and Thermal Systems; Advances for Process Industries, Parts A and B, 2011A gas-liquid two phase flow is complicated and it has not been understood well thus far, in spite of extensive investigation. Numerical simulation is a potential approach to understand this phenomenon. Although a number of studies have been conducted to understand the behavior of bubbles on the basis of computational fluid dynamics (CFD), it is ...
Shuji Hironaka +5 more
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AIP Conference Proceedings
The calculation of the curvature in Volume of Fluid (VOF) methods is still a challenge, and common approaches involve curve or surface fitting based on volume fractions. In this work, we explore an alternative approach for curvature computation in VOF simulations employing machine learning. The neural network establishes a correlation between curvature
Cervone A. +3 more
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The calculation of the curvature in Volume of Fluid (VOF) methods is still a challenge, and common approaches involve curve or surface fitting based on volume fractions. In this work, we explore an alternative approach for curvature computation in VOF simulations employing machine learning. The neural network establishes a correlation between curvature
Cervone A. +3 more
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Non-dissipative cloud transport in Eulerian grid models by the volume-of-fluid (VOF) method
Atmospheric Environment, 2005Abstract The formation of clouds is coupled to the vapour saturation condition. Cloud modelling is therefore dramatically disturbed by dilution processes, which are induced by recurrent interpolations on the fixed (Eulerian) grid. The numerical diffusion gives rise to degeneration and premature disappearance of the modelled clouds.
Detlef Hinneburg, Oswald Knoth
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Energy & Fuels, 2011
Biphasic flow in porous media is of great interest in several areas, such as petroleum and oil recovery, food impregnation, hydrology, and soil science. In this work, the penetration of an external liquid into a porous medium saturated with air, caused by the macroscopic pressure difference, was studied (impregnation).
Bruno A. M. Carciofi +2 more
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Biphasic flow in porous media is of great interest in several areas, such as petroleum and oil recovery, food impregnation, hydrology, and soil science. In this work, the penetration of an external liquid into a porous medium saturated with air, caused by the macroscopic pressure difference, was studied (impregnation).
Bruno A. M. Carciofi +2 more
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Flow Measurement and Instrumentation, 2016
Abstract Accurate measurement of flow in microchannels is imperative to better understand their flow behaviour, which aids in the design of microfluidic devices. In this work, we present an improved VOF model based on smoothing functions that can effectively minimise the issue of spurious velocities, which causes numerical simulations in ...
Gim Yau Soh +2 more
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Abstract Accurate measurement of flow in microchannels is imperative to better understand their flow behaviour, which aids in the design of microfluidic devices. In this work, we present an improved VOF model based on smoothing functions that can effectively minimise the issue of spurious velocities, which causes numerical simulations in ...
Gim Yau Soh +2 more
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Journal of Computational Physics, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mark Owkes, Olivier Desjardins
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zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mark Owkes, Olivier Desjardins
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Volume 1: Fora, Parts A and B, 2002
A computational method combining the multi-fluid and the Volume-of-Fluid (VOF) approaches is presented to simulate industrial multiphase flows in complex geometry. This method is particularly applicable for flows where well-defined interfaces between different phases/fluids co-exist with small-scale multiphase structures.
Jaehoon Han, Ales Alajbegovic
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A computational method combining the multi-fluid and the Volume-of-Fluid (VOF) approaches is presented to simulate industrial multiphase flows in complex geometry. This method is particularly applicable for flows where well-defined interfaces between different phases/fluids co-exist with small-scale multiphase structures.
Jaehoon Han, Ales Alajbegovic
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