Helmholtz Centre for Environmental Research (UFZ)

PostDoc or PhD position (m/f/x) - Reactive transport / multiphase flow modeling and code development Model implementation and analysis of Waste Repository and Geoenergy Systems.

Helmholtz Centre for Environmental Research (UFZ)

Leipzig, Germany

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.

In the energy sector (geo-resources and waste management), the covered research topics in UFZ range from process modelling and simulation to development of innovative monitoring strategies and investigation of socio-economic aspects. In particular the specific strength of the department of Environmental Informatics (ENVINF) is the model development and numerical simulation of individual and multiple coupled physical (Thermo-Hydro-Mechanical) and geochemical © processes in the geological subsurface.

Research topic
Coupled multiphase flow and reactive transport processes in porous and fractured media often occur in a wide range of subsurface system applications such as i) hydrocarbon reservoir production, ii) groundwater management, iii) CO2 sequestration, iv) nuclear waste disposal and/or v) geothermal energy systems. The numerical simulation of the long term behavior of these systems presents several challenges to modelers and code developers due to the complexity of the coupled processes and their high non-linearity. For example, these systems normally present coupled non-isothermal processes, different fluids (i.e. gas, groundwater) and multiple solid phases with different chemical compositions. In addition, phase change processes, controlled by pressure and temperature may also happen. To further increase the difficulty, the long term fluid-rock geochemical interactions could play a role in the system and models should consider chemical reactions and their feedback to the hydraulic and flow field.

At the present moment, the Department of Environmental Informatics is seeking for two motivated and reliable candidates to reinforce their reactive transport modelling group and contribute to a European research project (EURAD), starting at the earliest possible date (subject to final budget confirmation). Therefore we invite to applications for a:

PostDoc or PhD position (m/f/x) – Reactive transport / multiphase flow modeling and code development
Model implementation and analysis of Waste Repository and Geoenergy Systems.

PhD student position; working time 65% (25,35 hours per week), limited to 3 years or Postdoc position; working time 100% (39 hours per week), limited to 2 years in the beginning

Your tasks:
The candidate will work at the Department of Environmental Informatics of UFZ within the strategic research topic on Georessources for the Energy Transition and a High-Tech Society”. In this context, the candidate is expected to perform fundamental and applied research, implementing and understanding coupled reactive transport and multiphase flow processes on geothermal and nuclear waste disposal systems. Large scale models, employing reliable macroscopic laws capturing heterogeneity effects (e.g. fractures) on multiphase flow and reducing the computational complexity of modelling of coupled processes are necessary. To this end, reliable modelling techniques will be developed and verified to integrate the key processes for geo-models into OGS-6.

Specific tasks are:

  • Extension of the existing modelling workflows and constitutive relations in OpenGeoSys-6
  • Model implementation and software development
  • Testing and demonstration of the implementation correctness by benchmarking (i.e. analytical solutions, published results)
  • Application of the workflows to understand long term evolution of nuclear waste repositories and geothermal systems

According to candidate interests and capabilities, modification of the tasks towards more method developmentor application is possible.

Your profile:

  • University/or master´s degree in computer sciences, applied informatics/mathematics, environmental/chemical engineering, environmental sciences, hydrogeology or related disciplines.
  • Alternatively, demonstration of practical proficiency in computer coding/modelling for application oriented software would also be possible.
  • Good programming skills and practice will be beneficial (i.e. Python, Matlab, although C++ is preferable)
    *Experience in performing computational analysis such as Finite Element Method or similar and their application in mass transport in porous media or multiphase flow simulations
  • Experience with multi-component geochemical reactive transport is desirable.
  • Experience with OpenGeoSys (www.opengeosys.org) or other open source software is an asset
  • Very good written and oral communication skills in English are essential. German may be beneficial but not necessary

We offer:
For PhDs:

  • Top level interdisciplinary research at a research centre which enjoys an excellent reputation within Germany as well as internationally
  • Excellent technical facilities
  • Work in inter-disciplinary and multinational teams
  • Excellent links to national and international research networks
  • Support and optimal training courses by our graduate school (HIGRADE)
  • Remuneration in accordance with the TVöD public-sector pay grade 13 (65%)

For scientists:

  • Excellent technical facilities which are without parallel – The freedom you need to bridge the difficult gap between basic research and readiness for practical 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 the TVöD public-sector pay grade 13 including attractive public-sector social security benefits

The UFZ has a strong commitment to diversity and actively supports equal opportunities for all employees regardless of their origin, religion, ideology, disability, age or sexual identity. We look forward to applications from people who are open-minded and enjoy working in diverse teams.

Your contact for any questions you may have about the job: Dr. Vanessa Montoya Vanessa.montoya@ufz.de

J. Prof. Dr. Haibing Shao Haibing.shao@ufz.de

Please submit your application via our online portal with your cover letter, CV (please omit your photo, age, or marital status) and relevant attachments.

Closing date for applications: 29.03.2020

Place of work: Leipzig

Please apply via recruiter’s website.

Quote Reference: 1856