Research Topics

• Numerical Methods for Flow and Transport
  • Stable and locally conservative Eulerian schemes for flow and transport in porous and fractured media
  • Accurate and consistent particle-tracking schemes based on mixed-finite-element velocity fields
  • Flux postprocessing schemes for mapping finite-element-type primal solutions to mixed-finite-element fields
  
  
• Quantitative Hydrogeology
  • Hydrogeological system analysis
  • Groundwater modelling
  • Interpretation of hydraulic test data
  • Flow and transport modelling in porous and fractured media
  
  
• Reactive Transport Modeling
  • Reactive transport of radionuclides in the context of deep geological repositories for nuclear waste
  
  
• Software Development
  
  • Contributions to the scientific software OpenGeoSys.

ORCID

Journal Publications

• Petrova, E., Selzer, P. , Kranz, S., Zeilfelder, S., Hebig, K. H., Machida, I.,
  Marui, A., Blöcher, G., and Scheytt, T. (2025): Surrogate-Model-Based Calibration
  of Effective Transport Parameters from Push-Pull Tests in the Horonobe Aquifer
  (Japan), Geothermics, 133:103449. https://doi.org/10.1016/j.geothermics.2025.
  103449
• Selzer, P., Shao, H., Behrens, C., Lehmann, C., Seydewitz, R., Lu, R.,
  Kreye, P., Rühaak, W., Kolditz, O. (2024). The value of simplified models of
  radionuclide transport for the safety assessment of nuclear waste repositories: A
  benchmark study. Journal of Contaminant Hydrology, 267:104417. https://doi.
  org/10.1016/j.jconhyd.2024.104417
• Lehmann, C., Bilke, L., Buchwald, J., Graebling, N., Grunwald, N., Heinze, J.,
  Meisel, T., Lu, R., Naumov, D., Rink, K., Özgur Sen, O., Selzer, P. , Shao, H.,
  Wang, W., Zill, F., Nagel, T., Kolditz, O. (2024). OpenWorkFlow-Development
  of an open-source synthesis-platform for safety investigations in the site selection
  process. Grundwasser, 29, 31-47. https://doi.org/10.1007/s00767-024-00566-9
• Selzer, P. , Allgeier, J., Therrien, R., Cirpka, O.A. (2021). Finite-volume
  flux reconstruction and semi-analytical particle tracking on triangular prisms
  for finite-element-type models of variably-saturated flow. Advances in Water
  Resources, 154:103944. https://doi.org/10.1016/j.advwatres.2021.103944
• Selzer, P. , Cirpka, O.A. (2020). Postprocessing of standard finite element veloc-
  ity fields for accurate particle tracking applied to groundwater flow. Computational
  Geosciences. 24 (4), 1605–1624. https://doi.org/10.1007/s10596-020-09969-y

Academic Career

since 02/2025 
Staff Scientist
Department of Environmental Informatics, Helmholtz Centre for Environmental Research - UFZ, Leipzig, Germany

05/2023 - 01/2025
Postdoctoral Research Associate
Department of Environmental Informatics, Helmholtz Centre for Environmental Research - UFZ, Leipzig, Germany

06/2022 – 03/2023
Postdoctoral Fellow
Hydraulics in Environmental and Civil Engineering, University of Liège, Liège, Belgium

10/2017 – 05/2022
Doctoral Candidate / Research Assistant
RTG "Integrated Hydrosystem Modelling" funded by Deutsche Forschungsgemeinschaft
Chair of Hydrogeology, University of Tübingen, Germany
in collaboration with the Department of Geology and Geological Engineering, Université Laval, Québec Ville, Canada