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ISSN : 1026-3098
e-ISSN : 2345-3605
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Publication Information : Volume 23 - Number 5 - Successive Number 5
Type : Research Note
Topics of Paper : Transaction on Mechanical Engineering
English Title : Aerosol nano-particle charger simulations and optimizations
English Abstract : electric eld. In this work, a wire-cylinder corona charger is presented, redesigned, and aerodynamically optimized. An initial 2D axisymmetric geometry of the charger was employed for the simulations using the Computational Fluid Dynamics (CFD) commercial code FLUENT 6.3.26. Through successive attempts, a new geometry was obtained by streamlining the walls to eliminate the undesired vortices produced in the flow eld of the previous ones. The process optimized the charger by minimizing losses and dilutions of the particles. For electrical simulations of the charger, a new numerical algorithm was designed based on the steady-state corona discharge to work with segregated solvers to satisfy governing equations. The algorithm was validated using a one-dimensional semianalytic solution of corona discharge. Tracing particles for the optimized geometry, the percentage of losses was calculated 6%, whereas the loss in the old geometry was more than 30%. The average charge and charge distributions induced on particles were also calculated with evaluation of the residence times in the charger.
English Keywords : Aerosol; Charger; Corona discharge; CFD; Nano; Optimization.
Refrences :
Number Of Pages :
From 2220 to 2229


Authors :
The AuthorAuthor SequenceOrganizationOrganization ( english )AffiliationEmailEducation
A. Shaygani 1School of Engineering and Science, Sharif University of Technology, Kish, Iran.    
M.S. Saidi
(Author)
2School of Mechanical Engineering, Sharif University of Technology, Tehran, P.O. Box 11155-9567, Iran.    
M. Sani 3School of Engineering and Science, Sharif University of Technology, Kish, Iran.    
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2014
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