Interfacial mass transfer of water for fluorobenzene/aqueous solution system in double emulsion

Zhou, Bo; Cai, Pei; Chen, Yongping

doi:10.1016/j.ijheatmasstransfer.2019.118690

Cited by 21 publications

(6 citation statements)

References 26 publications

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“…Dynamics of droplet impacting on solid surface is of great significant in various scientific and technological fields, including 3D-printing (Wang et al 2016), spray cooling (Hsieh et al 2016), combustion (Li et al 2020), droplet impact erosion (Ahmad et al 2020), coating (Xu et al 2019), deposition of molten metal droplet (Jung et al 2013) and so on. Characteristic behaviors of droplet impacting on solid surface, containing spreading, retraction, deposition, splashing, partial rebound and rebound (Rioboo et al 2001;Josserand et al 2016;Zhang et al 2019;, are susceptible to physical properties of droplets (Palocios et al 2013;Chen et al 2015;Chen et al 2013;Liu et al 2019;Zhou et al 2019), structure of solid surface (Luo et al 2021;Chen et al 2017) and ambient temperature and pressure (Hao et al 2019). The process of droplet impact on solid surface is a multiphase and transient problem and its interactive multi-factor influence is more complex.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the dynamics of droplet impacting on a hydrophobic surface

Zhao

Wang

2023

Preprint

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An experimental visualization is undertaken to investigate the impact dynamic behaviors of water, absolute ethanol, and low surface energy droplets with different viscosities impacting on hydrophobic surfaces. The behaviors of droplets, including spreading, rebounding and oscillation retraction are observed and quantitatively characterized by transient spreading factor and maximum spreading diameter. Effects of droplet impact velocity, surface wettability, and droplet viscosity on the impact dynamics are explored and analyzed. As the droplet impact velocity increases, the droplet kinetic energy increases, resulting in that the spreading factor and spreading velocity increase simultaneously and the maximum spreading diameter of droplets increases with a gradual slower speed. Hydrophobic surfaces are not easily wetted by water droplets due to their low surface energy, leading to the partial rebound of water droplets when they impact on the hydrophobic surfaces. However, this phenomenon does not occur when low surface energy droplets such as absolute ethanol and simethicone impact on hydrophobic surfaces at the same velocity. The increasing droplet viscosity enhances the viscous dissipation, slowing down the impact process and inhibiting the droplet spreading, oscillation and retraction behaviors. Based on the energy conservation method, a universal model for the maximum spreading factor of low surface energy droplets with different viscosities impacting hydrophobic surface was established. According the experimental results, a new spreading time model tm=2D0/U0 was proposed to enhance applicability of the model for low surface energy droplets with high viscosity, reducing the calculation error to less than 10%.

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Section: Introductionmentioning

confidence: 99%

Experimental study on the dynamics of droplet impacting on a hydrophobic surface

Zhao

Wang

2023

Preprint

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“…Nowadays, several efforts devoted to investigate the vapor-liquid and liquid-liquid two-phase flow by using numerical method (Zhou et al, 2019) and experimental test (Chen et al, 2013). By these available experimental and numerical data, it is well known that two-phase flow heat exchange systems tend to cause temperature and pressure pulses when converting from a single phase to two phases.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Dynamic Heat Transfer Characteristics of a Mechanically Pumped Two-phase Cooling Loop

Tao

Gao

2021

Front. Energy Res.

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The present research designs a mechanically pumped cooling loop system and conducts an experimental investigation on the dynamic heat transfer characteristics of the system. The effects of the start-up heat load and heat load variation on the dynamic characteristics of the system are analyzed. The results indicate that during the start-up period, as the heat load rises, the temperature overshoot and duration time of adjustment decrease, while the pressure oscillation amplitude increases. During the regular operation period, as the heat load increases, the temperature at the evaporator outlet gradually increases until it approaches the saturation temperature and then remains constant. The pressure evolution at the evaporator outlet can be divided into four stages: steady state, drastic oscillation, damped oscillation, and slight oscillation.

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“…Due to the high refractive index difference between the spherical shell of hollow polymer microspheres and air, the spheres have a strong light-shielding ability and can be used in paint coatings in construction and leather, as well as in the cosmetics and paper industry [1,3,4]. In the Our group carried out some research in the field of efficient preparation o emulsions [6][7][8][9][10]. In the field of microfluidics, an effective microfluidic method a simple glass capillary assembly was proposed to encapsulate solids and prepar emulsions, and visual experiments were performed to verify the effectiveness o posed microfluidic device.…”

Section: Introductionmentioning

confidence: 99%

“…The W2-phase the curing environment, in which polyalcohol molecules were surfactant, and helped to inhibit the self-diffusion of water. The W1-phase was usually pure other filler that did not participate in the mass transfer process during emulsion Solution thermodynamics theory indicated that the chemical potentials, three phases in a double emulsion were closely related to their Henry coefficien pressures, fugacities, free energies, and other parameters, which significantly aff Our group carried out some research in the field of efficient preparation of double emulsions [6][7][8][9][10]. In the field of microfluidics, an effective microfluidic method based on a simple glass capillary assembly was proposed to encapsulate solids and prepare double emulsions, and visual experiments were performed to verify the effectiveness of the proposed microfluidic device.…”

Section: Introductionmentioning

confidence: 99%

“…Our group carried out some research in the field of efficient preparation of double emulsions [ 6 , 7 , 8 , 9 , 10 ]. In the field of microfluidics, an effective microfluidic method based on a simple glass capillary assembly was proposed to encapsulate solids and prepare double emulsions, and visual experiments were performed to verify the effectiveness of the proposed microfluidic device.…”

Section: Introductionmentioning

confidence: 99%

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Calculation Methods of Solution Chemical Potential and Application in Emulsion Microencapsulation

Liu

Zhou

2021

Molecules

Self Cite

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Several new biased sampling methods were summarized for solution chemical potential calculation methods in the field of emulsion microencapsulation. The principles, features, and calculation efficiencies of various biased Widom insertion sampling methods were introduced, including volume detection bias, simulation ensemble bias, and particle insertion bias. The proper matches between various types of solution in emulsion and biased Widom methods were suggested, following detailed analyses on the biased insertion techniques. The volume detection bias methods effectively improved the accuracy of the data and the calculation efficiency by inserting detection particles and were suggested to be used for the calculation of solvent chemical potential for the homogeneous aqueous phase of the emulsion. The chemical potential of water, argon, and fluorobenzene (a typical solvent of the oil phase in double emulsion) was calculated by a new, optimized volume detection bias proposed by this work. The recently developed Well-Tempered(WT)-Metadynamics method skillfully constructed low-density regions for particle insertion and dynamically adjusted the system configuration according to the potential energy around the detection point, and hence, could be used for the oil-polymer mixtures of microencapsulation emulsion. For the macromolecule solutes in the oil or aqueous phase of the emulsion, the particle insertion bias could be applied to greatly increase the success rate of Widom insertions. Readers were expected to choose appropriate biased Widom methods to carry out their calculations on chemical potential, fugacity, and solubility of solutions based on the system molecular properties, inspired by this paper.

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Interfacial mass transfer of water for fluorobenzene/aqueous solution system in double emulsion

Cited by 21 publications

References 26 publications

Experimental study on the dynamics of droplet impacting on a hydrophobic surface

Experimental study on the dynamics of droplet impacting on a hydrophobic surface

Experimental Study on the Dynamic Heat Transfer Characteristics of a Mechanically Pumped Two-phase Cooling Loop

Calculation Methods of Solution Chemical Potential and Application in Emulsion Microencapsulation

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