Numerical study of solid particles motion and deposition in a filter with regular and irregular arrangement of blocks with using Lattice Boltzmann method

Ansari, Vahide; Goharrizi, Ataallah Soltani; Jafari, Saeed; Abolpour, Bahador

doi:10.1016/j.compfluid.2014.11.022

Cited by 24 publications

(15 citation statements)

References 24 publications

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“…A total of 501 aerosol particles per set have been released from the inlet section, following the procedure described in the previous subsection. It can be seen that overall good agreement has been obtained with respect to previous studies (Ansari et al 2015;Brandon and Aggarwal 2001;Jafari et al 2010;Li et al 1994;Vincent and Humphries 1978). For values of Stk < 0.1, excellent consistency among the various investigations is observed, with the exception of the work of Jafari et al (2010).…”

Section: Fluid Flow and Particle Deposition On The Obstructionsupporting

confidence: 84%

“…This procedure benefits from the usage of a Lagrangian formulation for both continuous and disperse phases. Aerosol particle deposition is considered for an unsteady flow regime at a fixed Reynolds number, and these results are compared with published data (Ansari et al 2015;Brandon and Aggarwal 2001;Jafari et al 2010;Li et al 1994;Salmanzadeh et al 2007) over a wide range of Stokes number, namely 0.001 < Stk < 10. Subsequently, aerosol particle dispersion behind an impulsively-started finite plate is studied for two different Reynolds numbers, with the goal of demonstrating the advantages of employing the SPH framework for this purpose in the presence of a moving boundary.…”

Section: Introductionmentioning

confidence: 99%

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Using a fully-Lagrangian meshless method for the study of aerosol dispersion and deposition

Khorasanizade

Sousa

2016

Aerosol Science and Technology

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Smoothed Particle Hydrodynamics was employed in the present two-dimensional simulations, thus the algorithms implemented for both continuous and dispersed phase share a common Lagrangian stencil. The results were benchmarked against those produced in earlier investigations of particle deposition resulting from the flow around a stationary square obstacle. The proposed numerical procedure also facilitates the investigation of the fundamental physics governing the transport of resuspended particles in the wake of a moving operator, e.g., inside cleanroom facilities. Aiming to illustrate this capability, the dispersion of neutrally suspended particles behind an impulsivelystarted plate has been numerically simulated. Two distinct particle dispersion patterns, characterized by different Reynolds numbers, have been obtained for this problem. Altogether the results have demonstrated the accuracy of the method and associated advantages for multiphase flow studies, especially in cases involving moving boundaries due to its mesh-free nature. EDITOR Nicole Riemer CONTACT J. M. M. Sousa msousa@ist.utl.pt IDMEC, Instituto Superior T ecnico, Universidade de Lisboa, Av. Rovisco Pais 1, Lisboa 1049-001, Portugal. Color versions of one or more of the figures in the article can be found online at www.tandfonline.com/uast.

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Section: Fluid Flow and Particle Deposition On The Obstructionsupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Using a fully-Lagrangian meshless method for the study of aerosol dispersion and deposition

Khorasanizade

Sousa

2016

Aerosol Science and Technology

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“…Meanwhile, the volume fraction of the dust particles in the case of the settling chamber was much lower than 10% (Winfield et al, 2012(Winfield et al, , 2013a(Winfield et al, , 2013b. So, the DPM is a good choice to solve this gas-solid two-phase flow problem (Ansari, Goharrizi, Jafari, & Abolpour, 2015;Kosinski & Hoffmann, 2007;Pankajakshan, Mitchell, & Taylor, 2011;Zhou, Mo, & Cen, 2011). Zhou, Flamant, Gauthier, and Lu (2004), Wan, Peng, Xie, Zhang, and Huang (2013), Ma, Liu, Li, Huang, and Su (2015), Liu et al (2015), Oh, Choi, and Kim (2015), Guizani, Mokni, Mhiri, and Bournot (2014), Baghdar Hosseini, Haghighi Khoshkhoo, and Javadi Malabad (2017), Xie et al (2017) and Gao (2018a, 2018b) used the DPM to simulate the motion of particles in the airflow, and the simulation results were in accord to their experiment results.…”

Section: Airflow Field Dynamics Modelmentioning

confidence: 99%

Study on the key structure parameters of a gravity settling chamber based on a flow field simulation

Liu

Zhang

et al. 2019

Engineering Applications of Computational Fluid Mechanics

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A gravity settling chamber plays an important role in improving the effect of the dust removal when it is selected as a dust collector in a pneumatic cleaning system for cleaning a subway tunnel. The settling rate and the indexes evaluating the secondary blowing are studied to assess the effect of the dust removal in this paper. Regarding the length of the settling chamber, the height of the inlet duct, and the diameter and height of the outlet duct as the variables of the key structures, a flow field simulation analysis of the gravity settling chamber with different heights of the dust accumulation is carried out, then the key structure parameters are optimized by means of the experimental method of uniform design. Finally, the settling chamber with an excellent dust removal effect is obtained. Major conclusions can be drawn as follows. (1) The maximum velocity and the mean velocity ratio of the airflow near a dust accumulation surface are important evaluation indexes for judging the secondary blowing. (2) The maximum velocity near a dust accumulation surface usually doesn't appear on the vertical plane through the axis of the inlet duct or the outlet duct. (3) An excellent settling effect can be ensured during the whole cleaning process only when the maximum design height of the dust-accumulation surface is considered as a key working condition. (4) An excellent settling effect can be realized if the settling chamber without any filtering device and affiliated baffle structure are long enough. (5) The secondary blowing can be avoided if the inlet and outlet of the setting chamber are far away from the dust-accumulation surface. This study has a good guiding significance for the design of gravity settling chamber.

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“…This can be achieved with numerical simulations. For example, the lattice Boltzmann method (LBM), as an efficient approach to simulate fluid flow, has been widely used for such studies [13,22,23,24,25,26,27]. This method utilizes the Boltzmann equation to describe the fluid phase from a mesoscopic perspective.…”

Section: Introductionmentioning

confidence: 99%

A numerical analysis of pressure drop and particle capture efficiency by rectangular fibers using LB-DE methods

2018

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In this work, a coupled lattice Boltzmann method (LBM) and discrete element method (DEM) are used to simulate the particle transport and deposition on rectangular fibers of clean filter. The LBM is employed to describe the fluid flow around the fibers, whereas the DEM is used to deal with the particle dynamics. The effects of the Reynolds number, the fiber aspect ratio and the arrangement of fibers (i.e., orientation angle of a fiber) on the pressure drop and capture efficiency are investigated at the initial stage of the filtration process. The quality factor, commonly used to determine the filtration performance, is also studied. The simulation results illustrate that both pressure drop and capture efficiency are dependent on the orientation angle and aspect ratio. The Reynolds number has only a slight influence on the capture efficiency but has a significant effect on the pressure drop for high aspect ratio. A good filter performance can be obtained for square fiber when the orientation angle is π/4 from the quality factor standpoint.

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Numerical study of solid particles motion and deposition in a filter with regular and irregular arrangement of blocks with using Lattice Boltzmann method

Cited by 24 publications

References 24 publications

Using a fully-Lagrangian meshless method for the study of aerosol dispersion and deposition

Using a fully-Lagrangian meshless method for the study of aerosol dispersion and deposition

Study on the key structure parameters of a gravity settling chamber based on a flow field simulation

A numerical analysis of pressure drop and particle capture efficiency by rectangular fibers using LB-DE methods

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