Bild_FP Felix Preiss

M.Sc. Felix Johannes Preiss

  • Postanschrift: Kaiserstr. 12
    Liefer- und Besucheranschrift: Gotthard-Franz-Straße 3
    Geb. 50.31, 4. OG
    D-76131 Karlsruhe

About myself


I studied chemical engineering and process engineering at the Karlsruhe Institute of Technology (KIT) from 2011 to 2017. During my bachelor's degree, I dealt with food processing technology as part of a major subject and had first contacts in my bachelor thesis with the numerical simulation of processes. I completed my master's degree in food process engineering and thermal process engineering with a master's thesis at the Institute of Food Process Engineering in the field of extrusion.
Meanwhile, I am a research scientist at the Institute of Food Process Engineering in the field of high-pressure homogenization.

 

Research interests

I am currently working on the investigation of velocity fields in orifices of high-pressure homogenizers in order to calculate locally resolved shear, strain and Raynold stresses. To investigate the influence of these stresses on the droplets in the emulsion, the deformed droplets are additionally visualized in the process. In particular, the influence of the trajectory of the drops and the scalability of the process should be investigated.

 

Equipment

In order to be able to visualize the flow in the orifices experimentally, I use a μ-PIV (Micro-Particle Image Velocimetry) from Dantec with a microscope from Leica and optically accessible orifices which are specially made for this process. In addition, many analytical methods for the characterization of drop collectives and emulsions are available, so that the droplet size distribution, flow and interface behavior of the used systems can be described in detail.

 

Publications


Scaling of Droplet Breakup in High-Pressure Homogenizer Orifices. Part II: Visualization of the Turbulent Droplet Breakup.
Mutsch, B.; Preiss, F. J.; Dagenbach, T.; Karbstein, H. P.; Kähler, C. J.
2021. ChemEngineering, 5 (2), Art.-Nr.: 31. doi:10.3390/chemengineering5020031
Development of a pressure stable inline droplet generator with live droplet size measurement.
Preiss, F.; Dagenbach, T.; Fischer, M.; Karbstein, H. P.
2020. ChemEngineering, 4 (60), 1–14. doi:10.3390/chemengineering4040060

Presentations


Droplet breakup mechanisms at different droplet trajectories during high-pressure homogenization.
Preiss, F. J.; Karbstein, H. P.
2021, May 26. EFCE - Alternative food technologies - Science meets industry (2021), Online, May 25–27, 2021
Untersuchung des Tropfenaufbruchs in koaxialen Lochblenden während der Hochdruckhomogenisation.
Preiss, F. J.; Karbstein, H. P.
2021, March 9. Jahrestreffen der ProcessNet-Fachgruppen "Abfallbehandlung und Wertstoffrückgewinnung, Energieverfahrenstechnik, Gasreinigung, Hochtemperaturtechnik, Rohstoffe" (2017), Frankfurt am Main, Germany, March 21–23, 2017
Untersuchung des Tropfenaufbruchs in koaxialen Lochblenden während der Hochdruckhomogenisation.
Preiss, F. J.; Karbstein, H. P.
2021, March 12. Jahrestreffen der ProcessNet-Fachgruppen Lebensmittelverfahrenstechnik, Mischvorgänge, Grenzflächenbestimmte Systeme und Prozesse (2021), Online, March 11–12, 2021
Comparison of µ-PIV flow pattern measurements and CFD simulation of high-pressure homogenizer orifices.
Walzel, P.; Bisten, A.; Schaldach, G.; Preiss, F. J.; Karbstein, H. P.
2019, May 28. Jahrestreffen Reaktionstechnik gemeinsam mit der Fachgruppe Mehrphasenströmungen (2019), Würzburg, Germany, May 27–29, 2019

Posters


Investigation on flow patterns, local stresses, and resulting droplet deformation in orifices during high-pressure homogenization.
Preiss, F. J.; Kelemen, K.; Bisten, A.; Karbstein, H. P.
2019, March 5. Annual Meeting of the ProcessNet "Agglomeration und Schüttguttechnik" and "Lebensmittelverfahrenstechnik" (2019), Lausanne, Switzerland, March 5–7, 2019
Messaufbau zur Untersuchung der Tropfendeformation in Blenden in Abhängigkeit von der Aufgabeposition.
Preiss, F. J.; Bisten, A.; Karbstein, H. P.
2018, March 6. Jahrestreffen der ProcessNet-Fachgruppen Mehrphasenströmungen, Wärme- und Stoffübertragung und Computational Fluid Dynamics (2018), Bremen, Germany, March 6–7, 2018