TY - JOUR
TI - Design With Optimization of a Magnetic Separator for Turbulent Flowing Liquid Purifying Applications
AU - Belounis, A.
AU - Mehasni, R.
AU - Ouil, M.
AU - Feliachi, M.
AU - Latreche, M. El-Hadi
T2 - IEEE Transactions on Magnetics
AB - In this paper, an open gradient magnetic separator for turbulent flowing water purification has been designed, optimized, and experimentally tested. This device consists of an arrangement of identical electromagnets that operate as capture elements. In the first stage of the optimization, we have identified the optimal size of the elementary capture element and its excitation current that allow the separation of ferromagnetic particles (particle radius Rp <; 3 × 10-5 m) from a water flow of representative velocity (uf = 0.5 m/s) in a channel of small diameter D = 2.5 × 10-2 m. For this, we have minimized an objective function, which is the distance between the capture site of a given separated particle and the central point of the capture element. For such minimization, the Tabu search method has been applied. Second, we have optimized the number and the arrangement of capture elements that permit the separation for a channel of important diameter D = 5 × 10-2 m and reduced flow velocity uf = 0.2 m/s. In this case, the optimization is based on the comparison between the capture efficiencies of several proposed configurations of the separator. To validate the obtained results, experiments have been carried out on a turbulent water flow (Reynolds number Re = 104) containing fine ferromagnetic particles (μr = 8) with a concentration Cp = 0.8 g/L. The verification is based on the control of the evolution of the separated particles buildup and the quantifying of the volume of separated particles. For such quantifying, the Hall effect sensing technology has been used.
DA - 2015///août
PY - 2015
DO - 10.1109/TMAG.2015.2424401
DP - IEEE Xplore
VL - 51
IS - 8
SP - 1
EP - 8
SN - 0018-9464
UR - http://ieeexplore.ieee.org/document/7089255/
KW - Finite-element analysis
KW - Hall effect sensing technology
KW - Particle separators
KW - Reynolds number
KW - Tabu search method
KW - Trajectory
KW - capture efficiencies
KW - capture site
KW - channel flow
KW - computational fluid dynamics
KW - electromagnets
KW - elementary capture element
KW - excitation current
KW - ferromagnetic particles
KW - ferromagnetism
KW - finite element analysis
KW - flow simulation
KW - flow velocity
KW - fluid dynamics
KW - hydrodynamics
KW - magnetic forces
KW - magnetic particles
KW - magnetic separation
KW - minimisation
KW - minimization
KW - objective function
KW - open gradient magnetic separator
KW - optimization
KW - particle radius
KW - representative velocity
KW - separator configurations
KW - turbulence
KW - turbulent flowing liquid water purifying applications
ER -