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http://dx.doi.org/10.12989/sem.2017.62.2.163

Motion behavior research of liquid micro-particles filtration at various locations in a rotational flow field  

Yan, Yan (Department of Mechanical and Engineering, Southeast University)
Lin, Yuanzai (Department of Mechanical and Engineering, Southeast University)
Cheng, Jie (Department of Mechanical and Engineering, Southeast University)
Ni, Zhonghua (Department of Mechanical and Engineering, Southeast University)
Publication Information
Structural Engineering and Mechanics / v.62, no.2, 2017 , pp. 163-170 More about this Journal
Abstract
This study presents a particle-wall filtration model for predicting the particle motion behavior in a typical rotational flow field-filtration in blower system of cooker hood. Based on computational fluid dynamics model, air flow and particles has been simulated by Lagrangian-particle/ Eulerian-gas approaches and get verified by experiment data from a manufacturer. Airflow volume, particle diameter and local structure, which are related to the particle filtration has been studied. Results indicates that: (1) there exists an optimal airflow volume of $1243m^3/h$ related to the most appropriate filtration rate; (2) Diameter of particle is the significant property related to the filtration rate. Big size particles can represent the filtration performance of blower; (3) More than 86% grease particles are caught by impeller blades firstly, and then splashed onto the corresponding location of worm box internal wall. These results would help to study the micro-particle motion behavior and evaluate the filtration rate and structure design of blower.
Keywords
Computational Fluid Dynamics (CFD); two-phase model; particle-wall filtration model; blower;
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