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Post­doc or PhD po­si­ti­on (m/f)

Arbeitgeber: Helmholtz-Zentrum für Umweltforschung GmbH - UFZ


Wissenschaft und Technik
Karte anschauen
Vollzeit oder Teilzeit
Laufbahn / Entgeltgruppe
Mittlerer Dienst
Mirko Zeder

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The Helmholtz Centre for Environmental Research (UFZ) with its 1,100 employees has gained an excellent reputation as an international competence centre for environmental sciences. We are part of the largest scientific organisation in Germany, the Helmholtz association. Our mission: Our research seeks to find a balance between social development and the long-term protection of our natural resources.

The research initiative “Integrity of nuclear waste repository systems – Cross-scale system understanding and analysis” (iCROSS) funded by The Helmholtz Association and the Federal Ministry of Education and Research (BMBF) will establish a multidisciplinary scientific entity with high international visibility providing a unique research platform to solve urgent questions related to the future safe disposal of radioactive waste. It integrates the internationally renowned multidisciplinary research activities of FZJ, KIT and HZDR within the Helmholtz program NUSAFE on radio/geo/biochemistry with the expertise of GFZ and UFZ on earth system analysis, understanding and simulation. UFZ activities within this joint initiative are focussed on model and scientific software development for the analysis of nuclear waste repository systems across scales.
To strengthen the existing expertise in modelling of thermo-hydro-mechanical-chemical (THMC) coupled processes in fractured porous media at the Department Environmental Informatics of the UFZ in order to establish a leading position in the field of coupled process simulations for applications in deep geological deposition, we offer the following vacancy at the earliest possible date:

PostDoc or PhD position (m/f) Subject: Numerical Modelling of the Mechanical Integrity of Claystone Barriers under THM Coupled Conditions

working time: 100% (39 hours per week) for the PostDoc position or 65% for the PhD position (25,35 hours per week), limited to 32 months with extension option to 36 months,employment is subject to the approval of the (project-funding) sponsor

Your tasks:

  • Adapting and developing models addressing the anisotropic behaviour of claystone under THM coupled conditions before and after the formation of damage zones and failure planes
  • Analysing pore space changes and the formation of joint faces in order to assess transport properties as well as reactive potential of excavation damaged zones at multiple spatial scales
  • Implementation of models and algorithms into the scientific open-source finite element software platform OpenGeoSys
  • Defining and executing numerical benchmark tests
  • Model parameterisation and validation based on lab and field scenarios taking into account various uncertainties


Your profile:

  • Scientific education (Diploma, Master or PhD degree) in the field of civil, mechanical or environmental engineering, applied mathematics, or computer science
  • Proven experience in performing computational analyses using finite element or similar numerical methods of relevance, as well as in their application to porous media mechanics in a multi-physics context
  • Documented expertise in continuum mechanics, fracture mechanics, applied mathematics, theoretical physics, geotechnical engineering or similar
  • Advanced programming skills in C/C++ are required
  • Strong self-motivation and team work capability in a scientific software development group, interest in multi-disciplinary research, and the ability to communicate with experimental project partners
  • Experience in publishing and presenting scientific results
  • Very good oral and written communication skills in English

We offer:

  • Excellent technical facilities which are without parallel
  • The freedom you need to bridge the difficult gap between basic research and close to being ready for application
  • Work in inter-disciplinary, multinational teams and excellent links with national and international research networks
  • A vibrant region with a high quality of life and a wide cultural offering for a balance between family and professional life
  • Interesting career opportunities and an extensive range of training and further education courses
  • Remuneration up to TVöD public-sector pay grade 13 including attractive public-sector social security benefits

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