Gödeke, LutzOswald, WalterWillenbacher, NorbertEhrhard, Peter2021-04-062021-04-062020-10-01http://hdl.handle.net/2003/40137http://dx.doi.org/10.17877/DE290R-22012Modern spray-coating processes are based on high-volume, low-pressure, airless atomization or high-speed rotary bell atomization, often assisted by electrostatic charging to increase the transfer efficiency. The process from the liquid film flow beneath the bell, through ligament formation and consecutive disintegration to droplet deposition, has been constantly explored during the evolution of automotive spray coating. This work proposes a set of dimensionless groups that fully describe the process from film flow to ligament disintegration, including shear and elongational flow effects during atomization of particle laden, shear thinning, viscoelastic fluids.enDimensional analysisHigh-speed rotary bell atomizationElongational flowLigament disintegrationDroplet sizeAcrylic thickenerPlate-like particles660TextDimensionsanalyseZerstäubungTroutonströmungTropfengrößeTeilchenform