PhD Research Assistant in Hydromechanics – Numerical Simulation of Underground Hydrogen Storage Helmut Schmidt University in Germany

This PhD Research Assistant position is offered at Helmut Schmidt University / University of the Federal Armed Forces Hamburg, within the Faculty of Mechanical and Civil Engineering, Chair of Hydromechanics led by Univ.-Prof. Dr.-Ing. Ebigbo.

The role is part of a research project funded by the German Research Foundation, focusing on 'Assessing underground hydrogen storage with natural gas using numerical simulations.' The chair specializes in flow and reactive transport in porous and fractured media, and the advertised position centers on the numerical simulation of two-phase flow of hydrogen-methane mixtures and brine in subsurface reservoirs, with a particular emphasis on understanding how these flows affect storage efficiency. Responsibilities include developing models, improving numerical methods, conducting realistic simulations (including on HPC systems), analyzing and implementing equations of state and hysteretic constitutive relations for two-phase flows in porous media, and presenting research results at conferences and in journals.

The position also offers the possibility of further academic qualification, such as pursuing a doctorate, and involves some administrative and academic self-administration duties. Applicants should hold a Diplom (univ.) or Master’s degree in civil/environmental engineering, geosciences, physics, mathematics, computer science, or a related field with a focus on fluid flow.

Required skills include good knowledge of two-phase flow in porous media and experience in numerical modeling of flow. Desirable qualifications are proficiency in English (at least B2 CEFR), programming skills (Python, MatLab, or C++), and a strong interest in academic research. The position is full-time (39 hours/week), limited to 3 years, and classified under salary group 13 TVöD, with benefits such as annual bonus, company pension scheme, flexible working hours, subsidized public transport, childcare options, professional development, budget-friendly meals, health promotion, free parking, and car-sharing.

The university encourages applications from women and severely disabled persons. Applications must be submitted electronically (PDF) with the reference number BIW-1125 by November 24, 2025, to [email protected].

For further information, candidates can visit the university and chair websites or contact the supervisor directly.