Numerical modeling of electrostatic spray

Book · Sun Dec 31 04:00:00 EST 1995

OSTI ID:178263

Okuda, H ^[1]; Kelly, A J

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1. Princeton Univ., NJ (United States). Plasma Physics Lab.

Electrostatic powder painting in which aerosolized paint particles are charged up by an electron beam injected into air has been shown to be very promising in many applications including automobile painting. Behavior of low energy electrons ({approximately} 10 keV) interacting with air and powder particles at one atmospheric pressure, however, is not well understood and the detailed information of the interaction is essential in designing commercial paint spray. In order to understand the above process, the authors use a three-dimensional electrostatic particle simulation model in which an electron beam is injected into the air. Various ionization processes are included in the model by means of Monte-Carlo method. Preliminary results of the simulations indicate that a beam electron can generate a few hundred secondary electrons as well as negative ions that are important in charging the paint powder. Results of the simulations are presented and compared with data available from the powder spray experiment.

• DOE Contract Number: AC02-76CH03073
• OSTI ID: 178263
• Report Number(s): CONF-950612--; ISBN 0-7803-2669-5
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AEROSOLS
CHARGE COLLECTION
COMPARATIVE EVALUATIONS
MATHEMATICAL MODELS
PAINTS
SPRAY COATING
THEORETICAL DATA
USES