Numerical Simulation of Electrostatic Spray-painting Processes in the Automotive Industry
The present annual report summarises ongoing investigations performed at the Institut für Industrielle Fertigung und Fabrikbetrieb Universität Stuttgart (IFF) on the numerical simulation of spray painting in the automotive industry. Two examples, i.e. powder coating simulation using a corona spray gun and spray-painting simulation with high-speed rotary bell are showed. Numerical models for electrostatically supported painting processes were implemented in Fluent, a commercial CFD code based on an unstructured finite volume mesh. These models account for all important effects involved in the relevant physical processes, being able to predict the film thickness distribution and the paint transfer efficiency on the work piece. The calculations were carried out using VOLVOX-Cluster in the High Performance Computing Center Stuttgart.
KeywordsWork Piece Reynolds Stress Model Spray Painting External Charge Painting Process
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- 1.Gregory A. Kallio and David E. Stock: Computation of electrical conditions in side wire-duct electrostatic precipitators using a combined finite-element, finite-difference technique, J. Appl. Phys. (1986) 59(6).Google Scholar
- 5.J. Domnick, A. Scheibe, T. Steigleder, G. Weckerle, Q. Ye: Simulation of the Electrostatic Painting Process with High-Speed Rotary Bell Atomizers, 8th Int. Conference on Liquid Atomization and Spray Systems, July 16–20, Pasadena, CA, 2000Google Scholar
- 6.J. Domnick, A. Scheibe, Q. Ye: Simulation of the behaviour of sprays from high-speed rotary bell atomizers with external charging, 17th Annual Conference of ILASS-Europe on Liquid Atomization and Spray Systems, September 2–6, 2001, ZürichGoogle Scholar
- 8.Q. Ye, J. Domnick: On the simulation of space charge in electrostatic powder coating with a corana spray gun. 135–136 (2003) 250–260.Google Scholar
- 9.J. Domnick, A. Scheibe, Q. Ye: The electrostatic spray painting process with high-speed rotary bell atomizers: Influences of operating conditions and target geometries. Accepted by 9th Int. Conference on Liquid Atomization and Spray Systems, July, Sorrento, Italy, 2003Google Scholar
- 10.M.M. Pauthenier, M. Moreau-Hanot: La charge des particules sphériques dans un champ ionisé, J. Physique Radium 12 (1932), 590–613Google Scholar
- 11.Q. Ye, J. Domnick, A. Scheibe: Numerical simulation of spray painting in the automotive industry, Proceedings of the 1st European Automotive CFD conference, June Bingen, Germany 2003.Google Scholar
- 12.M. Cudazzo, J. Domnick, K. Pulli, T. Steigleder, U. Strobeck and Q. Ye: Neue Entwicklungen zur Verbesserung der Pulverlackapplikation und-rück-gewinnung. Galvanotechnik (2001) Band 92, Heft 9, 2474–2480Google Scholar
- 13.J. Cei: Numerical simulation of the electrostatic powder coating process in conducting cylindrical work piece with a pneumatic corona spray gun, Master’s Thesis, 2002Google Scholar