An Exact Solution of Interception Efficiency Over an Elliptical Fiber Collector

Wang, Wenxi; Xie, Minge; Lian-ping, Wang

doi:10.1080/02786826.2012.671559

Cited by 12 publications

(10 citation statements)

References 30 publications

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“…In terms of elliptical fibers, there are limited studies on the flow fields, capture efficiency, and pressure drop. Here we quote the studies of Raynor (2002) and Kirsh (2011) for flow fields and pressure drop and Raynor (2008), Regan and Raynor (2009) and Wang et al (2012b) for diffusional and interceptive efficiencies of single elliptical fiber. Recently, Wang et al (2014) in our research group obtained a series of empirical correction factors for the pressure drop and capture efficiency of elliptical fiber from the existing formulas of circular fiber.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Fiber Geometry and Orientation Angle on Filtration Performance

Wang

2015

Aerosol Science and Technology

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In this article, the particle filtration processes of five noncircular fibers with triangular, quatrefoil, trilobal, rectangular, and elliptical cross-sections were numerically investigated, and the pressure drop, capture efficiency, and quality factor due to three main capture mechanisms (diffusion, interception, and inertial impaction) were calculated. By comparing the results with circular fiber, which has the same volume fraction as the five noncircular fibers, the following results can be found. The diffusional capture efficiency, which is highly dependent on the superficial area of fibers, is almost independent of the orientation angle for all fibers. For the quatrefoil, trilobal, and elliptical fibers, as the aspect ratio of component ellipse increases, the capture range also increases, as does the capture efficiency due to three different mechanisms. When considering submicron particles with medium size, which are difficult to capture with circular fibers (especially when dominated by the interception mechanism), triangle and trilobal fibers have higher capture efficiency when the orientation angle is 0 and 60 , respectively. The quality factors of these fibers due to the three capture mechanisms were also investigated in this article. The triangular and rectangular fibers placed horizontally perform better for intermediate and high-inertia particles, and the elliptical fiber placed horizontally shows an advantage in capturing small particles with strong Brownian diffusion.

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Section: Introductionmentioning

confidence: 99%

The Influence of Fiber Geometry and Orientation Angle on Filtration Performance

Wang

2015

Aerosol Science and Technology

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“…Real fibrous filters are composed of fibers that they are randomly oriented in contrast with perpendicular the plane as supposed in the theoretical models. The fabric filter is widely applied due to its convenient, simple and general features [5]. Current researches in field of fabric filters focused on the filtering mechanisms, efficiency and pressure drop [5].…”

Section: Introductionmentioning

confidence: 99%

“…The fabric filter is widely applied due to its convenient, simple and general features [5]. Current researches in field of fabric filters focused on the filtering mechanisms, efficiency and pressure drop [5]. The base of the classic filtration theories is formed with Single fiber efficiency (SFE), which defines the efficiency of a single fiber that is placed in a cell [6].…”

Section: Introductionmentioning

confidence: 99%

Eulerian Lagrangian Simulation of Particle Capture and Dendrite Formation on Binary Fibers

Akbarnezhad

Goharrizi

Salmanzadeh

2018

IJE

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The capture efficiency of the small aerosol particle is strongly influenced by the structure of fibrous layers. This study presents particle deposition and dendrite formation on different arrangements of binary fibers. 2-D numerical simulation is performed using the open source software of OpenFOAM. In the instantaneous filtration of a single fiber, obtained results are in good agreement with the existing model. Results showed that addition of nanofiber to microfiber led to high capture efficiency for the particle size 50nm at the cross arrangement with fibers distance 2µm. When particle gets larger, i.e. 150 nm, binary fibers have higher capture efficiency and pressure drop than the single microfiber at all arrangements, especially for the fibers distance 1.5 µm. Therefore, the good fibers arrangement here seems the cross arrangement with the high capture efficiency, average pressure drop and fibers distance 2 µm.

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“…There are already many researches on the flow field over ellipse, square and rectangular fibers [1][2][3][4][5], but little over arc plates. As non-circular fibers per unit volume can offer higher surface area than circular fibers and improve the filter performance greatly.…”

Section: Introductionmentioning

confidence: 99%