Postdoctoral Research Fellow / Postdoctoral Research Fellowess

Postdoctoral Research Fellow in Aqueous Chemistry and Thermochemical Modelling

100%, Zurich, Fixed-term

The Nuclear Safety and Multiphase Flows Laboratory (NS-ECMFL) is a research group within the Department of Mechanical and Process Engineering at ETH Zurich, led by Prof. Dr. Annalisa Manera. Our lab specializes in both experimental and computational studies of multiphase flows and thermal-hydraulic phenomena in nuclear systems. We develop advanced measurement techniques, perform high-resolution experiments, and conduct multi-scale, multi-physics simulations. Our work aims to improve nuclear reactor safety and efficiency through innovative passive safety systems and detailed analysis of complex fluid dynamics and heat transfer processes.

Project Background

This international project, where ETH Zurich plays a crucial role, significantly contributes to various research and development aspects of nuclear safety. The focus is to gather essential data on the liquid source term, enhance our understanding of the associated phenomena, and develop tools to simulate the relevant processes. In collaboration with PSI, ETH reviews data from previous projects, emphasizing leaching tests of Chornobyl's lava in various liquids and contributes to reviewing data from Fukushima-related research projects, particularly concerning thermodynamic data for caesium and strontium compounds.

ETH is actively engaged in developing and validating new simulation models, which include reviewing other simulation tools and databases, such as thermodynamic solvers, to better understand liquid speciation and dissolution processes. These efforts are integral to developing and integrating new models into severe accident codes, where we assess and validate thermodynamic data to predict the behaviour of fission products like caesium and strontium in liquid phases during accidents.

Job Description

In the context of the project, your duties will involve the following tasks:

• Extension and validation of thermodynamic databases relevant to modelling aqueous systems.
• Analysing experimental data to improve the understanding of liquid source term phenomena.
• Developing and validating simulation models, focusing on thermodynamic aspects and geochemical tools to predict fission product behaviour.
• Implementing the developed models into simulation codes and algorithms.
• Collaborating closely with project partners from other leading research institutions.
• Presenting research findings at international conferences and workshops.
• Contributing to the dissemination of project results through various communication channels.
• Collaborating with colleagues in computational modelling and experimental domains to enhance data analysis.

Profile

• Ph.D. in Nuclear Engineering, Physics, Chemical Engineering, or a related field.
• Experience with computational chemistry and simulation tools.
• Prior knowledge of nuclear safety, severe accident analysis, and radioactive material behaviour is a plus.
• Proficient in programming languages (C++ and Python).
• Independent, self-driven, creative, and solution-oriented.
• Strong written and verbal communication skills, with a team-player attitude.

Workplace

Your career will be shaped within a collaborative and respectful environment, fully aligned with ETH Zurich’s focus on social and leadership competencies. We encourage applicants to reflect these values in their work style.

We Offer

• Opportunities for professional development and collaboration with leading experts in the field.
• Your job will make an impact: Become part of ETH Zurich, which not only supports your professional development but also actively contributes to positive change in society.
• You can expect numerous benefits, including public transport season tickets, car sharing, a wide range of sports offered by the ASVZ, childcare, and attractive pension benefits.

We Value Diversity and Sustainability

In alignment with our values, ETH Zurich promotes an inclusive culture. We advocate for equality of opportunity, value diversity, and foster a working and learning environment that respects the rights and dignity of all staff and students. Visit our Equal Opportunities and Diversity website to learn how we cultivate a fair and open environment that allows everyone to thrive. Sustainability is a core principle for us, and we are dedicated to a climate-neutral future.

Curious? So Are We.

We encourage you to apply online using the form below. Please include the following documents:

• CV
• Cover Letter
• Reference Letters

Only applications matching the job profile will be considered. For further information about the Laboratory of Nuclear Safety and Multiphase Flows, please visit our website. Questions regarding the position should be directed to Dr. Sergii Nichenko at +41 56 310 22 96 or via email at snichenko@ethz.ch (no applications).

About ETH Zurich

ETH Zurich is one of the world's leading universities specializing in science and technology, renowned for its excellent education, cutting-edge research, and direct transfer of new knowledge into society. With over 30,000 people from more than 120 countries, our university is a place that fosters independent thinking and inspires excellence. Situated in the heart of Europe, we forge connections worldwide to collaboratively develop solutions for today’s and tomorrow’s global challenges.