Direct numerical simulation of water droplet coalescence in the oil

Mohammadi, Mehdi; Shahhosseini, Shahrokh; Bayat, Mahmoud

doi:10.1016/j.ijheatfluidflow.2012.04.001

Cited by 63 publications

(31 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To track the air-oil two-phase flow, the VOF method [21] for multiphase flow is used. The geometric reconstruction scheme from the work of Youngs is used to represent the interfaces, which is the most accurate one for interface tracking [22]. Considering the influence of the high-speed rotation and the swirl flow, the RNG k-e turbulence model is employed in the simulation.…”

Section: Multiple-nozzle Oil-jet Cooling Methodsmentioning

confidence: 99%

Jet cooling for rolling bearings: Flow visualization and temperature distribution

et al. 2016

Applied Thermal Engineering

View full text Add to dashboard Cite

Section: Multiple-nozzle Oil-jet Cooling Methodsmentioning

confidence: 99%

Jet cooling for rolling bearings: Flow visualization and temperature distribution

et al. 2016

Applied Thermal Engineering

View full text Add to dashboard Cite

“…Several authors studied the fluid dynamics of drop coalescence (Yiantsios and Davis 1991, Nobari et al 1996, Loewenberg and Hinch 1997, Eggers et al 1999, Duchemin et al 2003, Hardt 2005, Yoon et al 2007, Eiswirth et al 2012, Mohammadi et al 2012, Chen and Wang 2014, Mansouri et al 2014 and were able to reproduce the specific shapes after film rupture such as the formation of coalescence bridge (Menchaca-Rocha et al 2001, Decent et al 2006. Due to the above-discussed restrictions, coalescence was artificially induced by "smeared" interfaces or by introduced conjunctions between the interfaces and the film drainage could not be resolved adequately.…”

Section: Computational Fluid Dynamicsmentioning

confidence: 99%

Drop coalescence in technical liquid/liquid applications: a review on experimental techniques and modeling approaches

Kamp

Villwock

Kraume

2016

Reviews in Chemical Engineering

125

106

View full text Add to dashboard Cite

AbstractThe coalescence phenomenon of drops in liquid/liquid systems is reviewed with particular focus on its technical relevance and application. Due to the complexity of coalescence, a comprehensive survey of the coalescence process and the numerous influencing factors is given. Subsequently, available experimental techniques with different levels of detail are summarized and compared. These techniques can be divided in simple settling tests for qualitative coalescence behavior investigations and gravity settler design, single-drop coalescence studies at flat interfaces as well as between droplets, and detailed film drainage analysis. To model the coalescence rate in liquid/liquid systems on a technical scale, the generic population balance framework is introduced. Additionally, different coalescence modeling approaches are reviewed with ascending level of detail from empirical correlations to comprehensive film drainage models and detailed computational fluid and particle dynamics.

show abstract

“…The phase with higher volume fraction is the Natural gas [19][20][21]. During the processing across the equipment, the gas is condensed in to two liquid phases, water and hydrocarbon liquid phase, these two phases are present in a less proportion than gas phase, about 2% in volume.…”

Section: ) Multiphase Modelingmentioning

confidence: 99%

NGL supersonic separator: modeling, improvement, and validation and adjustment of k-epsilon RNG modified for swirl flow turbulence model

Guevara-Luna

Cerón

2017

Rev. Fac. Ing. Univ. Antioquia

View full text Add to dashboard Cite

ABSTRACT:The processing of natural gas requires the implementation of new technologies in a context of increasing demand around the world. The natural gas liquids (NGL) separation using supersonic devices is a novel and efficient way to reduce volume of installed equipment and operation costs using the effects of highly turbulent and circular flows. This research implemented Computational Fluid Dynamics (CFD) modeling to improve the efficiency of typical NGL recovery process using the supersonic approach. In this research, a novel turbulence modeling approach was implemented aiming to minimize the processing time, and the results obtained were validated with experimental data available. This research is based on the model called k-epsilon RNG modified for swirl flow, this model has not been used and validated previously in highly compressible, turbulent and circular flow systems. The efficiency of the process was improved by 11% in comparison to the efficiency reported in past studies, and the processing time for the modeling was reduced by 40% with the proposed and adjusted turbulence approach. During the validation of the model k-epsilon RNG modified for swirl flow the swirl factor, part of the turbulence model, was adjusted to an optimum value for compressible, turbulent and circular flow systems involved in supersonic NGL separation process, allowing accurate results to be obtained with lower processing time than with other typical and common approaches as RSM and LES.RESUMEN: El procesamiento de gas natural requiere la aplicación de nuevas tecnologías en un contexto de aumento de la demanda en todo el mundo. La separación de líquidos de gas natural (LGN) utilizando dispositivos supersónicos, es una novedosa y eficiente manera de reducir el volumen de equipos instalados y costos, utilizando los efectos de los flujos circulares altamente turbulentos. En esta investigación se implementa dinámica computacional de fluidos (CFD) para mejorar la eficiencia del proceso típico de recuperación de LGN utilizando el enfoque supersónico. También se puso en práctica un nuevo enfoque de modelado de la turbulencia con el objetivo de minimizar el tiempo de procesamiento, los resultados obtenidos fueron validados con datos experimentales disponibles. Esta investigación se basa en el modelo llamado k-épsilon RNG modificado para flujo remolino; este modelo no se ha utilizado ni validado antes en sistemas de flujo altamente compresibles, turbulentos y circulares. La eficiencia del proceso fue mejorada en un 11% en comparación con la eficiencia reportada en investigaciones previas, y el tiempo de procesamiento para el modelado redujo 40% con el enfoque turbulencia propuesto y ajustado. Durante la validación del modelo k-épsilon RNG modificado para flujo remolino el factor de remolino, parte del modelo de turbulencia, se ajustó a un valor óptimo para sistemas de flujo compresibles, turbulentos y circulares que participan en procesos de separación de NGL supersónico, lo que permite obtener resultados más precisos y con un menor ti...

show abstract

Direct numerical simulation of water droplet coalescence in the oil

Cited by 63 publications

References 38 publications

Jet cooling for rolling bearings: Flow visualization and temperature distribution

Jet cooling for rolling bearings: Flow visualization and temperature distribution

Drop coalescence in technical liquid/liquid applications: a review on experimental techniques and modeling approaches

NGL supersonic separator: modeling, improvement, and validation and adjustment of k-epsilon RNG modified for swirl flow turbulence model

Contact Info

Product

Resources

About