Modeling of the break-up of deformable particles in developed turbulent flow

Sarımeselı, Ayse; Kelbaliyev, G. I.

doi:10.1016/j.ces.2003.09.047

Cited by 33 publications

(20 citation statements)

References 23 publications

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“…Modeling of mass transfer and deposition behavior of fine particles in cylindrical channels were studied by several researchers [112][113][114]. Molina [115] developed a mathematical model which took into account the geometry of channels, fluid properties, NP size and concentration.…”

Section: Transport Of Nanocatalysts Inside Porous Mediamentioning

confidence: 99%

Application of Nanoparticles in Enhanced Oil Recovery: A Critical Review of Recent Progress

et al. 2017

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Abstract:The injected fluids in secondary processes supplement the natural energy present in the reservoir to displace oil. The recovery efficiency mainly depends on the mechanism of pressure maintenance. However, the injected fluids in tertiary or enhanced oil recovery (EOR) processes interact with the reservoir rock/oil system. Thus, EOR techniques are receiving substantial attention worldwide as the available oil resources are declining. However, some challenges, such as low sweep efficiency, high costs and potential formation damage, still hinder the further application of these EOR technologies. Current studies on nanoparticles are seen as potential solutions to most of the challenges associated with these traditional EOR techniques. This paper provides an overview of the latest studies about the use of nanoparticles to enhance oil recovery and paves the way for researchers who are interested in the integration of these progresses. The first part of this paper addresses studies about the major EOR mechanisms of nanoparticles used in the forms of nanofluids, nanoemulsions and nanocatalysts, including disjoining pressure, viscosity increase of injection fluids, preventing asphaltene precipitation, wettability alteration and interfacial tension reduction. This part is followed by a review of the most important research regarding various novel nano-assisted EOR methods where nanoparticles are used to target various existing thermal, chemical and gas methods. Finally, this review identifies the challenges and opportunities for future study regarding application of nanoparticles in EOR processes.

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Section: Transport Of Nanocatalysts Inside Porous Mediamentioning

confidence: 99%

Application of Nanoparticles in Enhanced Oil Recovery: A Critical Review of Recent Progress

et al. 2017

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“…(6) with consideration of (9) with the condition that ∂ 2 σ/ ∂ r 2 is an insignificant quantity, we Wave equation (10) defines the velocity distribution of the liquid in the film, or the change in thickness of the film as a function of the pressure and distribution of surface tension. It should be noted that Leo et al [19] propose a somewhat different form for the equation in question: the pressure distribution and surface tension as a function of θ are disregarded.…”

Section: Precipitation Of Drops and Separation Of The Disperse Phase mentioning

confidence: 99%

“…Consequently, a minimum drop diameter a min characterizing the break-up threshold, and a maximum drop diameter a max characterizing the coalescence threshold exist. In [7,9,10] it is demonstrated that the frequency of collision and breakdown of drops, and also their minimum and maximum diameters depend on the hydrodynamic conditions (proportional to the specific dissipation energy), and the properties of the dispersing medium and drops.…”

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confidence: 99%

Study of interphase film thinning in petroleum emulsion separation processes

Келбалиев¹,

Safarov²

2011

Chem Technol Fuels Oils

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Models are proposed for the thinning of an interphase film in petroleum emulsion separation processes, taking account of the Marangoni effect and the asphaltene content. The thickness of the adsorption layer on the surface of a drop is estimated. The computational and experimental data on the time dependencies of the interphase film thickness are compared.Petroleum emulsion separation processes are a critical step in the preparation of petroleum crude for refining. A significant number of studies [1-4] are devoted to theoretical and experimental investigations of the mechanism responsible for the formation, stabilization, and breakdown of petroleum emulsions as heterogeneous systems. Many problems associated with phenomena occurring on the petroleum-water interface, coalescence and break-up of water drops, and stratification and precipitation, however, have yet to be resolved. Petroleum emulsions are polydisperse systems with water drops ranging in size from 1 to 150 μm, and contain coarsely disperse (150-1,000 μm) and finely disperse (0.001-1 μm) particles. Such a scatter of particle sizes exerts a major influence on the mechanism for breakdown, separation, and precipitation of the drops in petroleum emulsions, which can be divided into the following stages.1.Deformation and breakdown of adsorption layers on the petroleum-water interface within the volume of the emulsion using surface-active substances (SAS) at certain temperatures (60-70°C) and pressures. 2. Convergence and collision of drops of various size with the formation an interface film. It should be pointed out that transport of drops in a polydisperse system is determined primarily by the hydrodynamic conditions and turbulence of the flow. In [5][6][7], it is demonstrated that under isotropic turbulence, the frequency of collisions between drops is proportional to ( ) 3 1 2 /

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“…Different models were proposed on the prediction of maximum drop size in the turbulent flow (Angeli and Hewitt 2000;Levich 1962;Hesketh et al 1991;Zhou and Kresta 1998;Sarimeseli and Kelbliyev 2004). The maximum drops were first subjected to deformation and then broke down at a certain frequency, depending on the nature of the turbulent flow.…”

Section: Introductionmentioning

confidence: 99%

Kinetics of Drop Breakage in Stirred Vessels under Turbulent Conditions

Sis¹,

Kelbaliyev²,

Chander³

2005

Journal of Dispersion Science and Technology

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The emulsification of dodecane oil was studied in a standard stirred vessel filled with distilled water. The in situ size distribution of the drops was measured at certain time intervals by using a particle size analyzer while stirring. The results showed that an increase in the stirring time and stirring rate resulted in a decrease in the mean drop size of drops and shifted the drop size distribution toward smaller sizes. The minimum droplet size in the turbulent flow was found to be proportional to a min (WD) 21.75 . Normalization of data exhibited that the size distribution of drops is self-preserving. The distribution of mean drop size and distribution functions of drops were determined by using models developed from the Focker-Plank equation regarding size distribution of particles in turbulent flows. The evaluation of droplet breakage with time in isotropic turbulent flow showed that the size distribution can be represented by the summation of log-normal distribution function in series. It was found that the experimental data could be represented well by the empirical models.

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Modeling of the break-up of deformable particles in developed turbulent flow

Cited by 33 publications

References 23 publications

Application of Nanoparticles in Enhanced Oil Recovery: A Critical Review of Recent Progress

Application of Nanoparticles in Enhanced Oil Recovery: A Critical Review of Recent Progress

Study of interphase film thinning in petroleum emulsion separation processes

Kinetics of Drop Breakage in Stirred Vessels under Turbulent Conditions

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