At Helmut Schmidt University / University of the Federal Armed Forces Hamburg (HSU / UniBw H), Faculty of Mechanical and Civil Engineering, Chair of Hydromechanics (Univ.-Prof. Dr.-Ing. Ebigbo), a position is available at the next possible date for a RESEARCH ASSISTANT (M/F/D) (SALARY GROUP 13 TVÖD [COLLECTIVE AGREEMENT FOR THE PUBLIC SERVICE]; 39 HOURS PER WEEK) for a limited period of 3 years. The scientific work is part of the research project "Assessing underground hydrogen storage with natural gas using numerical simulations" funded by the German Research Foundation. The research focus of the chair is flow and reactive transport in porous and fractured media. The advertised position focuses on the numerical simulation of two-phase flow of hydrogen-methane mixtures and brine in subsurface reservoirs and the effect of the specific characteristics of such flow on storage efficiency. RE