• since 2025: Scientific Researcher at the Laboratory of Fluid Dynamics and Technical Flows, Otto von Guericke University Magdeburg

• 2025: Dissertation (OvGU): Experimental und numerical investigations of a continuous counter-current solid-liquid extraction process focusing on hydrodynamic phenomena
• since 2024: Project Manager in the Collaborative Research Center CRC/TRR287 – Bulk Reaction

• 2020-2025: PhD student at the Laboratory of Fluid Dynamics and Technical Flows, Otto von Guericke University Magdeburg and member of the International Max Planck Research School (IMPRS)
• 2019: Master-thesis (OvGU): Preliminary fluid analysis of a counterflow screw extractor
• 2018-2019: Master-studies: Wirtschaftsingenieur für Verfahrens- und Energietechnik, Otto von Guericke University Magdeburg,
• 2014-2018: Bachelor-studies: Wirtschaftsingenieur für Verfahrens- und Energietechnik, Otto von Guericke Universität Magdeburg
• 1995 born in Magdeburg  

Research Activities

• Numerical simulation of multiphase flows in a countercurrent screw extractor to extract active substances from plants
• Numerical simulation of scaling hydrodynamics in crystallisers

Publications

1. Lehr, A.; Janiga, G.; Seidel-Morgenstern, A.; Thévenin, D.; CFD simulation of a solid-liquid counter-current screw extractor. Comput. Aided Chem. Eng. 48, (2020) 223-228.
2. Lehr, A.; Janiga, G.; Seidel-Morgenstern, A.; Thévenin, D.; Numerical study on the solid phase residence time distribution in a counter current screw extractor, Comput. Aided Chem. Eng. 51, 2022, 13-18.
3. Lehr, A.; Vu, Giang T.; Janiga, G.; Seidel-Morgenstern, A.; Thévenin, D.; Experimental investigation of the residence time distribution in a screw-type apparatus to extract artemisinin, Chem. Eng. Process. – Process Intensif. 187, 2023, 109337.
4. Al-Hamadi, R.; Lehr, A.; Janiga, G.; Seidel-Morgenstern, A.; Thévenin, D.; Experimantal investigation of the solid phase residence time distribution in screw extractors, Powder Technology, 2025, 121446

Starting in 2003, you can find a full reference list of the lab under Research