Predicting viscosity of emulsions in the broad range of inner phase concentrations

Krynke, K.; Sęk, J.

doi:10.1016/j.colsurfa.2004.06.006

Cited by 20 publications

(5 citation statements)

References 11 publications

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“…This conclusion is proven here for a water-in-oil emulsion through a dimensional consideration of the forces governing viscosity for a practical water-in-fuel oil emulsion via the nondimensionalization of Eq. (11), which uses the same approach as Krynke and Sek (2004). The emulsion particle Peclet number (Pe P ), particle capillary number (Ca P ), and particle Reynolds number (Re P ) are defined in Eqs.…”

Section: Correlation Frameworkmentioning

confidence: 99%

Injection of Water-in-Oil Emulsion Jets Into a Subsonic Crossflow: An Experimental Study

et al. 2014

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Section: Correlation Frameworkmentioning

confidence: 99%

Injection of Water-in-Oil Emulsion Jets Into a Subsonic Crossflow: An Experimental Study

et al. 2014

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“…The need to install a water pump also needs to be considered as part of a comprehensive assessment of the possibility of reducing the energy demand for pumping the viscous oil phase. The level of the variations in the total energy resulting from the operation of both pumps can be expressed by the PR index, which is defined by the expression in (7) and, consequently, one in (10). The values of PR can be found in Figure 8, and the presentation contains the simulation results obtained for an oil with a relative viscosity of 25 and confirms that the generation of a two-phase liquid-liquid flow in the pipe can have an effect completely different from one that was projected.…”

Section: Example Of Quantitative Assessment Of Drag Reduction and Pumping Powermentioning

confidence: 99%

“…If it is an unplanned and spontaneous phenomenon, its effects may be adverse or even dangerous for the correct operation of a given technological installation. It should also be remembered that the separation of emulsion components is difficult to implement, and its rheological properties may differ significantly from those of its components in a pure state (Krynke et al [10]). However, the greatest obstacle is related to the fact that the actual effect of the surfactant cannot be predicted only on the basis of theoretical calculations, and thus at the design stage of the flow system.…”

Section: Introductionmentioning

confidence: 99%

Two-Phase Liquid–Liquid Flow in the Aspect of Reduction of Pumping Power of Hydrophobic Substances with High Viscosity

Hapanowicz

2021

Energies

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The paper reports the results of a study into a method of estimating the level of power/energy reduction needed for pumping highly viscous hydrophobic liquids. The effect of reducing the flow resistance resulting from feeding an adequate volume of water into the flow tube is considered. The polar parameters of water selected for analysis are different than oil. Experimental studies were not carried out in this regard, since the commonly accessible equation expressing the resistance of two-phase liquid–liquid flow was utilized to develop the method discussed in this study. On its basis, simulations were carried out to determine the conditions and level of reduction of the two-phase flow resistance in comparison to the single-phase flow resistance of a highly viscous oily liquid. The analysis of the results provided means for determination of such ranges of variations in the flow parameters of the two-phase liquid–liquid system, in which the total power of pumps applied to pump both liquids is smaller than the power of one pump feeding oil into the pipeline in the conditions of single-phase flow. Calculations were performed for selected constant mass flux densities of oil with various viscosities as well as for water. The proposed method can be applied in the procedure of optimization calculations for pipeline installations and their feed systems. The given example of its use was preceded by a description of the reasons and effects associated with the reduction of flow resistance in liquid–liquid systems and a detailed presentation of how to use the equation that forms the essence of the described calculation method. Attention was also paid to other phenomena accompanying two-phase liquid–liquid flows, i.e., interfacial slip, phase inversion, specific flow structures, and the viscosity of the unstable mixture of two liquids flowing in the pipe.

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“…No entanto, a extensão do estudo, com novas combinações de surfactante e de líquido emulsifi cado pode resultar em valores mais elevados de porosidade, uma vez que a preparação de emulsões com mais de 90% de fase emulsifi cada é amplamente descrita na literatura [15,21,22,25].…”

Section: Caracterização Das Cerâmicas Celularesunclassified

Produção de cerâmicas celulares por emulsão seguida de gelificação

et al. 2011

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ResumoAs cerâmicas celulares têm sido produzidas por diferentes métodos, resultando em uma ampla faixa de estruturas e propriedades. Este trabalho descreve uma nova rota para a produção de cerâmicas celulares, a qual se baseia na gelifi cação de emulsões constituídas de suspensões cerâmicas aquosas contendo monômeros orgânicos solúveis em água e uma fase líquida apolar emulsifi cada (querosene). Os efeitos do teor de sólidos e da fração de querosene nas propriedades reológicas das emulsões foram avaliados. A estrutura celular foi analisada por microscopia eletrônica de varredura e revelou poros isolados nas amostras de baixa porosidade, os quais mudaram para uma rede interconectada de poros com o aumento da porosidade. Compressão diametral foi usada para avaliar a resistência mecânica das amostras sinterizadas, a qual variou entre 2,0 e 48 MPa, dependendo da porosidade. Palavras-chave: cerâmicas celulares, emulsões o/a, gelcasting. Abstract Cellular ceramics have been produced by several methods, resulting in a wide range of structures and properties. This work describes a novel route to produce cellular ceramics based on the gel casting of emulsions consisting of an aqueous ceramic suspension containing water-soluble organic monomers and an emulsifi ed insoluble liquid phase (kerosene

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Predicting viscosity of emulsions in the broad range of inner phase concentrations

Cited by 20 publications

References 11 publications

Injection of Water-in-Oil Emulsion Jets Into a Subsonic Crossflow: An Experimental Study

Injection of Water-in-Oil Emulsion Jets Into a Subsonic Crossflow: An Experimental Study

Two-Phase Liquid–Liquid Flow in the Aspect of Reduction of Pumping Power of Hydrophobic Substances with High Viscosity

Produção de cerâmicas celulares por emulsão seguida de gelificação

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