D. Hu et al., DESIGN OF TRAVELING-WAVE FIELD PANEL FOR PHARMACEUTICAL POWDERS BASEDON COMPUTER-SIMULATION OF PARTICLE TRAJECTORIES, IEEE transactions on industry applications, 33(3), 1997, pp. 641-650
A fundamental study of charged particle levitation and transport in a
traveling-wave field was carried out with a view to design and manufac
ture a series of flatbed panels with embedded electrode arrangement, F
ourier transformation technique has been used to provide boundary cond
itions for the numerical calculations of particle trajectories, From t
he analysis, a potential function can be extracted which gives a bette
r approximation compared to the one given by Masuda's early work, The
numerical method using finite element and finite difference technique
to solve field and trajectories, respectively, has been employed with
a well-designed user interface. The user interface for integrating bot
h methods is of universal value on its own, Based on this study, a com
puter program is under development with three levels of accuracy. The
first level with consideration of the first spatial harmonic is presen
ted in this paper, which is sufficient for designing panel electrode a
rrangements for the confinement and transport of dry powders, For the
advanced study of particle trajectories under higher harmonic vectors,
levels 2 and 3 (currently under development) may be utilized to serve
different user requirement of accuracy, A series of panel electrodes
have been designed and manufactured based on the analyses presented in
this paper. Using these panels, lactose powder samples were successfu
lly levitated and transported in the desired direction, Experimental o
bservation is in good agreement with the numerical results.