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 in 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 project, in which 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 liquid source terms, improve our understanding of the associated phenomena, and develop tools to simulate the relevant processes. In collaboration with PSI, ETH reviews data from previous research, including leaching tests of Chornobyl's lava in different liquids, and contributes to analyzing data from Fukushima-related research, particularly focusing on thermodynamic data for caesium and strontium compounds.

ETH is actively engaged in developing and validating new simulation models. This includes reviewing other simulation tools and databases, such as thermodynamic solvers, to enhance our understanding of liquid speciation and dissolution processes. ETH plays a vital role in summarizing knowledge on the GEMS thermochemical solver and HERACLES thermodynamic database, which are specifically dedicated to nuclear applications. These efforts are integral to developing and integrating new models into severe accident (SA) codes, which include assessing and validating thermodynamic data to predict the behavior of fission products like caesium and strontium in liquid phases during accidents.

Job Description

As part of the project, your duties will include:

• Extending and validating thermodynamic databases relevant to the modeling of aqueous systems.
• Analyzing experimental data to enhance the understanding of liquid source term phenomena.
• Developing and validating simulation models, focusing on thermodynamic aspects and geochemical tools to predict fission product behavior.
• Implementing 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 modeling and experimental domains to improve 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 behavior is a plus.
• Good knowledge of programming languages (C++ and Python).
• Independent, self-driven, creative, and solution-oriented.
• Strong written and verbal communication skills, with a collaborative team-player attitude.

Workplace

ETH Zurich fosters a collaborative and dynamic research environment that values social and leadership competencies, promoting a shared work culture.

We Offer

• Opportunities for professional development and collaboration with leading experts in the field.
• Your job with impact: Become part of ETH Zurich, which actively contributes to positive societal change.
• A range of benefits, including public transport season tickets, car sharing, diverse sports offerings, childcare, and attractive pension benefits.

We Value Diversity and Sustainability

At ETH Zurich, we encourage an inclusive culture that promotes equality of opportunity and values diversity. We nurture a working and learning environment where the rights and dignity of all staff and students are respected. Sustainability is a core value for us, and we consistently work towards a climate-neutral future.

Curious? So Are We!

Apply online using the form below. Only applications matching the job profile will be considered.

About ETH Zurich

ETH Zurich is one of the world’s leading universities specializing in science and technology. We are renowned for our excellent education, cutting-edge research, and the direct transfer of new knowledge into society. Over 30,000 individuals from more than 120 countries consider our university a place that fosters independent thinking and inspires excellence. Located in the heart of Europe, we forge connections across the globe to develop solutions for the challenges of today and tomorrow.