Distribution and Deposition of Cylindrical Nanoparticles in a Turbulent Pipe Flow

Lin, Willy; Shi, Ruifang; Lin, Jianzhong

doi:10.3390/app11030962

Cited by 5 publications

(3 citation statements)

References 27 publications

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“…The fouling process is influenced by a large number of factors: physico-chemical, mechanical, and stochastic factors, temporal changes, and in case of biofouling, genotypic factors and deterministic phenomena [15]. The particle deposition rate onto a submerged stratum is impacted by a particle's shape and orientation [16], inertial force of the particle, gravity, Brownian and turbulent diffusion [17], particle size, substrate topography, surface interactions such as van der Waals forces, electrostatic double-layer forces and other charge-related interaction forces [11]. Adhesion depends on colloidal behaviour of particles, and inorganic particles larger than approximately 1 m will be carried away from the surface by gravity or momentum.…”

Section: Introductionmentioning

confidence: 99%

Fouling of mammalian hair fibres exposed to a titanium dioxide colloidal suspension

Krsmanovic

Ali

Biswas

et al. 2022

J. R. Soc. Interface.

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Fouling of surfaces in prolonged contact with liquid often leads to detrimental alteration of material properties and performance. A wide range of factors which include mass transport, surface properties and surface interactions dictate whether foulants are able to adhere to a surface. Passive means of foulant rejection, such as the microscopic patterns, have been known to develop in nature. In this work, we investigate the anti-fouling behaviour of animal fur and its apparent passive resistance to fouling. We compare the fouling performance of several categories of natural and manufactured fibres, and present correlations between contamination susceptibility and physio-mechanical properties of the fibre and its environment. Lastly, we present a correlation between the fouling intensity of a fibre and the cumulative impact of multiple interacting factors declared in the form of a dimensionless group. Artificial and natural hair strands exhibit comparable anti-fouling behaviour in flow, however, the absence of flow improves the performance of some artificial fibres. Among the plethora of factors affecting the fouling of fur hair, the dimensionless groups we present herein provide the best demarcation between fibres of different origin.

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Section: Introductionmentioning

confidence: 99%

Fouling of mammalian hair fibres exposed to a titanium dioxide colloidal suspension

Krsmanovic

Ali

Biswas

et al. 2022

J. R. Soc. Interface.

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“…Some papers in this Special Issue are related to the motion characteristics of non-spherical particles. Lin et al [10] numerically simulated the distribution and deposition of rod-like nanoparticles in a turbulent pipe flow by considering the Brownian and turbulent diffusion of nanoparticles. They showed that the penetration efficiency of particles decreased with increasing particle aspect ratio, Reynolds number, and pipe length-to-diameter ratio, and built a relationship between the penetration efficiency of particles and related synthetic parameters based on the numerical data.…”

Section: Foundation and Application Of Multiphase Flow In Microfluidicsmentioning

confidence: 99%

Special Issue on Multiphase Flows in Microfluidics: Fundamentals and Applications

Lin

2023

Applied Sciences

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“…In fact, the effect of additive on the turbulence varies with its concentration and scale (e.g., Lin etc. [10,[15][16][17] and Yang etc. [18]).…”

Section: Introductionmentioning

confidence: 99%

Fibers Effects on Contract Turbulence Using a Coupling Euler Model

Yang

2021

Applied Sciences

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Fiber additive will induce the rheological behavior of suspension, resulting in variation in velocity profile and fiber orientation especially for the non-dilute case. Based on the fluid-solid coupling dynamics simulation, it shows that the fiber orientation aligns along the streamline more and more quickly in the central turbulent region as the fiber concentration increases, especially contract ratio Cx > 4. However, fibers tend to maintain the original uniform orientation and are rarely affected by the contract ratio in the boundary layer. The fibers orientation in the near semi-dilute phase is lower than that in the dilute phase near the outlet, which may be the result of the hydrodynamic contact lubrication between fibers. The orientation distribution and concentration of the fibers change the viscous flow mechanism of the suspension microscopically, which makes a velocity profile vary with the phase concentration. The velocity profile of the approaching semi-dilute phase sublayer is higher than that of the dilute and semi-dilute phases on the central streamline and in the viscous bottom layer, showing weak drag reduction while the situation is opposite on the logarithmic layer of the boundary layer. The relevant research can provide a process strategy for fiber orientation optimization and rheological control in the industrial applications of suspension.

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Distribution and Deposition of Cylindrical Nanoparticles in a Turbulent Pipe Flow

Cited by 5 publications

References 27 publications

Fouling of mammalian hair fibres exposed to a titanium dioxide colloidal suspension

Fouling of mammalian hair fibres exposed to a titanium dioxide colloidal suspension

Special Issue on Multiphase Flows in Microfluidics: Fundamentals and Applications

Fibers Effects on Contract Turbulence Using a Coupling Euler Model

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