Transient CFD Simulations of a Bell Sprayer

Paper #:
  • 982291

Published:
  • 1998-09-29
Citation:
Miller, R., Strumolo, G., Babu, V., Braslaw, J. et al., "Transient CFD Simulations of a Bell Sprayer," SAE Technical Paper 982291, 1998, https://doi.org/10.4271/982291.
Pages:
11
Abstract:
A methodology is developed that incorporates high resolution CFD flowfield information and a particle trajectory simulation, aimed at addressing Paint Transfer Efficiency (PTE) for bell sprayers. Given a solid model for the bell sprayer, the CFD simulation, through automeshing, determines a high resolution Cartesian volume mesh (14-20 million cells). With specified values of the initial shaping air, transient and steady-state flow field information is obtained. A particle trajectory visualization tool called SpraySIM uses this complicated flowfield information to determine the particle trajectories of the paint particles under the influence of drag, gravity and electrostatic potential. The sensitivity of PTE on shaping air velocity, charge-to-mass ratio, potential, and particle diameter are examined.
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