Title :
Mathematical modelling of powder paint particle trajectories in electrostatic painting
Author :
Ali, F.S. ; Base, T.E. ; Inculet, I.I.
Author_Institution :
Appl. Electrostat. Res. Centre, Univ. of Western Ontario, London, Ont., Canada
Abstract :
The trajectories of charged powder particles in an electrostatic powder coating system were modelled considering electrical and fluid forces. The mathematical model employed an iterative technique wherein the charge simulation method was used to compute the electric field strength and the method of characteristics was used to compute the charge density in the gun-to-target region. The fluid flow between the electrostatic gun and the target was modelled using interpolated experimental data assuming stagnation point flow. Particle trajectories were simulated for size range 10-40 μm and charge-to-mass ratios of 0.1-1 (-)μC/gram. The simulation results showed good agreement with experimental data (charge and mass measurements) at several collection points on the painting target and provided valuable information concerning particle deposition
Keywords :
electric charge; electric fields; electric strength; electrostatics; iterative methods; powder technology; spray coating techniques; 10 to 40 mum; charge density; charge measurements; charge simulation method; electric field strength; electrical forces; electrostatic painting; electrostatic powder coating system; fluid flow; fluid forces; gun-to-target region; iterative technique; mass measurements; mathematical modelling; painting target; particle deposition; powder paint particle trajectories; stagnation point flow; Charge measurement; Coatings; Computational modeling; Current measurement; Electrostatic measurements; Fluid flow; Iterative methods; Mathematical model; Paints; Powders;
Conference_Titel :
Industry Applications Society Annual Meeting, 1994., Conference Record of the 1994 IEEE
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-1993-1
DOI :
10.1109/IAS.1994.377612
