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Numerical simulation of particle dynamics in an orifice–electrode system. Application to counting and sizing by impedance measurement
Author(s) -
Isèbe Damien,
Nérin Philippe
Publication year - 2013
Publication title -
international journal for numerical methods in biomedical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.741
H-Index - 63
eISSN - 2040-7947
pISSN - 2040-7939
DOI - 10.1002/cnm.2528
Subject(s) - sizing , body orifice , electrical impedance , electrode , mechanics , particle (ecology) , dynamics (music) , materials science , physics , acoustics , mechanical engineering , electrical engineering , engineering , chemistry , geology , oceanography , organic chemistry , quantum mechanics
SUMMARY This paper describes how to numerically tackle the problem of counting and sizing particles by impedance measurement in an orifice–electrode system. The model allows to simulate the particle dynamics submitted to strong hydrodynamic stresses through a microorifice and to compute the voltage pulses generated by the modification of the inner dielectric medium. This approach gives important information about particles size distribution and allows to quantify the role of trajectory and orientation of particles on the size measurement. Copyright © 2012 John Wiley & Sons, Ltd.