On the filtration performance of dust-loaded trilobal fibers

Saleh, A.M.; Tafreshi, H. Vahedi

doi:10.1016/j.seppur.2015.06.005

Cited by 20 publications

(4 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Most of the existing theory for SFFE hypothesis that the fibers have circular cross sections. As a result of the noncircular fibers having alarger aspect ratio, consequently, many other studies are focused on the noncircular cross-sectional shapes, including ellipse, , square, or rectangular, ,, as well as “+” shaped, , “T” shaped, “O” hollow shaped, and “V” shaped . Raynor solved the theoretical expression of interception efficiency of a single fiber by analyzing the distribution characteristics of flow field around an elliptical fiber.…”

Section: Classical Filtration Theoriesmentioning

confidence: 99%

Theoretical Model of Single Fiber Efficiency and the Effect of Microstructure on Fibrous Filtration Performance: A Review

Bai

Qian

Fan

et al. 2020

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Fibrous filters are widely used in manufacturing and separation industries to remove aerosol particles produced in the production process. However, due to the complex internal structure of fibrous filters, there are still some problems to be investigated. In the first part of this review, the different theoretical analyses of the flow field distribution around the fiber is summarized. In a comparison of the various theoretical models of flow fields with the simulation results, the Kuwabara-Happel flow field model has the best applicability. The theoretical models of single fiber filtration by five mechanisms: diffusion, interception, inertial impaction, gravity settling, and electrostatic effects are summarized. One of the other outstanding questions is the effect of fibrous microstructure characteristics on filtration efficiencies, such as the composite layer structure, the heterogeneity of the fibrous filters, and the fiber orientation. Finally, critical gaps in the literature and necessary directions for future investigations are also given.

show abstract

Section: Classical Filtration Theoriesmentioning

confidence: 99%

Theoretical Model of Single Fiber Efficiency and the Effect of Microstructure on Fibrous Filtration Performance: A Review

Bai

Qian

Fan

et al. 2020

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…But these studies didn't consider the impact of particle deposition on filtration process, they were only fitted for the initial period of filtration. In order to study the real situation of filtration process, scholars at home and abroad have done a lot of research (Dong, Li, Shang, & Li, 2019;Saleh & Vahedi Tafreshi, 2015;Saleh, Hosseini, Vahedi Tafreshi, & Pourdeyhimi, 2013). For example, Dong et al (2019) studied the process of particle deposition on fibers dynamically.…”

Section: Contact Xuedong Liumentioning

confidence: 99%

Investigating the filtration behavior of metal fiber felt using CFD-DEM simulation

Liu

Ding

Chen

et al. 2019

Engineering Applications of Computational Fluid Mechanics

View full text Add to dashboard Cite

This paper studies the dynamic filtration behavior of coal particles in metal fiber felt, by developing a three-dimensional model based on microstructure and arrangement mode of metal fiber felt identified by scanning electron microscope. Discrete element method (DEM) is coupled with Computational fluid dynamics (CFD) to simulate filtration of coal particles in metal fiber felt. The simulation mainly studies the moving trail and deposition characteristics of spherical coal particles. The results demonstrated that coal particles can bypass the metal fibers and enter the inside of the metal fiber felt through mesh channels. The moving trail of coal particles is similar to a broken line. It is also shown that most coal particles are trapped due to the deep filtration of metal fiber felt and the distribution pattern of them is inhomogeneous. The number of particles trapped by metal fiber felt is reduced in the direction of thickness. It is found that coal particles can be trapped not only by randomly arranged metal fibers, but also by coal particles deposited previously. Finally, the kinetic energy loss of coal particles mainly occurs in the initial stage when particles pass through metal fiber felt. And the velocity of coal particles inside metal fiber felt is maintained at 0.15-0.25 m/s. Highlights • A more realistic three-dimensional model was reconstructed according to scanning electron microscope pictures. • The particle trajectory, deposition mode of particle groups and speed change of particles were investigated using CFD-DEM in the paper. • The simulation method was validated by the experiment.

show abstract

“…Compared to circular fibers with equivalent volumetric fractions, non-circular fibers boast a larger specific surface area and offer substantial potential to improve the collection efficiency, mechanical properties, and particle-holding capacity of fiber filters. Some researchers have studied the filtration performance of non-circular fibers and have confirmed that their filtration efficiency in numerous conditions surpasses that of circular fibers [21][22][23][24]. The cross-sectional characteristics of non-circular fibers are crucial factors affecting their pressure drop and collection efficiency [25].…”

Section: Introductionmentioning

confidence: 99%

Specialized spatially-arranged non-circular fibers enhance filtration performance of African shrimp (Atya gabonensis)

Liao,

Lyu,

Zhang

et al. 2024

Bioinspir. Biomim.

View full text Add to dashboard Cite

African shrimp (Atya gabonensis) inhabit clear freshwaters, where the notably low concentration of food may pose a challenge to the efficacy of filter fibers on the chela for filter-feeding. Here, we investigate how the distinctive cross-sectional characteristics and spatial arrangement of the African shrimp's non-circular fibers contribute to the enhanced filtration performance of these specialized fibers. The unilateral thickening of the wall along the long axis of the elliptical cross-section of African shrimp fibers markedly enhances the filtration performance. The staggered and twisted arrangement of the fibers optimizes the surrounding flow field, achieving a favorable balance between pressure drop and collection efficiency, consequently improving their filtration performance in collecting fine particles (diameter: 2-10 μm). Moreover, the arrangement of the fibers substantially increases the effective flow-facing filtering area of the fiber bundles, thus facilitating their efficiency in collecting larger particles (diameter>10 μm). The unique fiber properties of the African shrimp offer novel insights for the design and optimization of new fiber-filtering robots, presenting a wide range of potential applications, such as marine in-situ resource extraction, medical filtration, and industrial filtration.

show abstract

On the filtration performance of dust-loaded trilobal fibers

Cited by 20 publications

References 38 publications

Theoretical Model of Single Fiber Efficiency and the Effect of Microstructure on Fibrous Filtration Performance: A Review

Theoretical Model of Single Fiber Efficiency and the Effect of Microstructure on Fibrous Filtration Performance: A Review

Investigating the filtration behavior of metal fiber felt using CFD-DEM simulation

Specialized spatially-arranged non-circular fibers enhance filtration performance of African shrimp (Atya gabonensis)

Contact Info

Product

Resources

About