Contact
+49 711 685 62413
+49 711 685 62317
Email
Pfaffenwaldring 31
70569 Stuttgart
Germany
Room: 1-123
Subject
Droplet dynamics: Analytical and experimental investigation of drop-wall interactions, drop-liquid interactions, and atomization processes
Research collaborations :
Droplet Interaction Technologies *DROPIT*(coordinator for experimental work)
- Geppert, A. K., & Lamanna, G. (2023). Towards spatial and time-resolved film thickness measurements during droplet impact onto thin liquid films. 32nd Conference on Liquid Atomization & Spray Systems, ILASS Europe 2023, 4-7 Sept 2023, Napoli, Italy.
- Geppert, A. K., & Weigand, B. (2023). Spreading dynamics during single droplet impact onto a free-standing cubic surface element. 11th International Conference on Multiphase Flow, ICMF 2023, Kobe, Japan, April 2-7, 2023.
- Geppert, A. K., Foltyn, P., & Weigand, B. (2022). Effect of edge length and wettability on droplet impact onto a stand-alone cubic pillar. 31th Conference on Liquid Atomization and Spray Systems, ILASS–Europe 2022, Tel-Aviv (Virtual). https://ilass2022.net.technion.ac.il/files/2022/09/Effect-of-edge-length-and-wettability-on-droplet-impact-onto-a.pdf
- Lamanna, G., Geppert, A. K., Bernard, R., & Weigand, B. (2022). Drop impact onto wetted walls: an unsteady analytical solution for modelling crown spreading. Journal of Fluid Mechanics, 938, A34. https://doi.org/10.1017/jfm.2022.69
- Geppert, A. K., Santini, M., Lamanna, G., Cossali, G. E., & Weigand, B. (2022). Scientific Highlights of the International Research Training Group (GRK 2160/2) “Droplet Interaction Technologies” (DROPIT). 31th Conference on Liquid Atomization and Spray Systems, ILASS-Europe 2022, Tel-Aviv (Virtual).
- Ren, W., Foltyn, P., Geppert, A. K., & Weigand, B. (2021). Air entrapment and bubble formation during droplet impact onto a single cubic pillar. Scientific Reports, 11(1), Article 1. https://doi.org/10.1038/s41598-021-97376-3
- Steigerwald, J., Geppert, A. K., & Weigand, B. (2021). Numerical study of drop shape effects in binary drop film interactions for different density ratios. 15th Triennial International Conference on Liquid Atomization and Spray Systems, ICLASS 2021, Edinburgh, UK.
- Liu, Y., Geppert, A. K., Chu, X., & Weigand, B. (2021). Simulation of an annular liquid jet with a coaxial supersonic gas jet in a medical inhalter. Atomization and Sprays, 31(9), Article 9. https://doi.org/10.1615/AtomizSpr.2021037223
- Geppert, A., Bernard, R., Weigand, B., & Lamanna, G. (2020). Analytical Model for Crown Spreading During Drop Impact onto Wetted Walls: Effect of Liquids Viscosity on Momentum Transfer. In G. Lamanna, S. Tonini, G. E. Cossali, & B. Weigand (Eds.), Droplet Interactions and Spray Processes. Fluid Mechanics and Its Applications, vol. 121 (Vol. 121, pp. 177–190). Springer, Cham. https://doi.org/10.1007/978-3-030-33338-6_14
- Geppert, A. K. (2019). Experimental investigation of droplet wall-film interaction of binary systems [Dissertation]. In Thermodynamik. Verlag Dr. Hut.
- Terzis, A., Kirsch, M., Vaikuntanathan, V., Geppert, A., Lamanna, G., & Weigand, B. (2019). Splashing characteristics of diesel exhaust fluid (AdBlue) droplets impacting on urea-water solution films. Experimental Thermal and Fluid Science, 102, 152--162.
- Lamanna, G., Geppert, A., & Weigand, B. (2019). On the effect of a thin liquid film on the crown propagation in drop impact studies. ILASS-Europe 2019, 29th Conference on Liquid Atomization and Spray Systems, Paris, France.
- Bernard, R., Geppert, A., Vaikuntanathan, V., Lamanna, G., & Weigand, B. (2018). On the Scaling of Crown Rim Diameter during Droplet Impact on Thin Wall-Films. ICLASS 2018, 14th Triennal International Conference on Liquid Atomization and Spray Systems.
- Steigerwald, J., Geppert, A., Ertl, M., Bernard, R., Vaikuntanathan, V., Lamanna, G., & Weigand, B. (2018). Direct Numerical Simulation of One- and Two-Component Droplet Wall-Film Interactions within the Crown-Type Splashing Regime. ICLASS 2018, 14th Triennal International Conference on Liquid Atomization and Spray Systems, Chicago, IL, USA.
- Bernard, R., Foltyn, P., Geppert, A., Lamanna, G., & Weigand, B. (2017). Generalized analysis of the deposition/splashing limit for one- and two-component droplet impacts upon thin films. 28th Conference on Liquid Atomization and Spray Systems, 6-8 September 2017, Valencia, Spain, Valencia, Spain.
- Geppert, A., Terzis, A., Lamanna, G., Marengo, M., & Weigand, B. (2017). A benchmark study for the crown-type splashing dynamics of one- and two-component droplet wall-film interactions. Experiments in Fluids, 58(12), Article 12. https://doi.org/10.1007/s00348-017-2447-2
- Geppert, A., Chatzianagnostou, D., Meister, C., Gomaa, H., Lamanna, G., & Weigand, B. (2016). Classification of Impact Morphology and Splashing/Deposition Limit for n-Hexadecane. Atomization and Sprays, 26(10), Article 10. https://doi.org/10.1615/AtomizSpr.2015013352
- Geppert, A., Terzis, A., Lamanna, G., Marengo, M., & Weigand, B. (2016). On the Formation of Secondary Droplets from Crown Bottom Breakdown during Drop Impact on Very Thin Films. 27th Annual Conference on Liquid Atomization and Spray Systems, Brighton, UK, Brighton, UK.
- Geppert, A., Strcbac, A., Marengo, M., Lamanna, G., & Weigand, B. (2015). Two-Component Droplet Wall-Film Interaction: Crown Morphology as a Function of Liquids Viscosity and Surface Tension. ICLASS 2015, 13th International Conference on Liquid Atomization and Spray Systems, Tainan, Taiwan.
- Geppert, A., Gomaa, H., Meister, C., Lamanna, G., & Weigand, B. (2014). Droplet Wall-Film-Interaction: Impact Morphology and Splashing/Deposition Boundary of Hyspin/ n-Hexadecane Two-Component System. ILASS-Americas, 26th Annual Conference on Liquid Atomization and Spray Systems, Portland, Oregon, USA.
- Geppert, A., Greif, F., Lamanna, G., & Weigand, B. (2013). Phenomenology of Two-Component Droplet-Wall Film-Interaction. ILASS-Europe, 25th European Conference on Liquid Atomization and Spray Systems, Chania, Greece.