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 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 objective is to enhance nuclear reactor safety and efficiency through innovative passive safety systems and detailed analyses of complex fluid dynamics and heat transfer processes.

Project Background

This project, in which ETH Zurich plays a pivotal role, significantly contributes to various research and development aspects of nuclear safety. The focus is on gathering critical data on liquid source terms, enhancing our understanding of associated phenomena, and developing tools to simulate relevant processes. In collaboration with PSI, ETH reviews data from previous projects, including leaching tests of Chornobyl's lava in various liquids, and also assesses 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. This entails reviewing simulation tools and databases, such as thermodynamic solvers, to improve our understanding of liquid speciation and dissolution processes. Our efforts include summarizing knowledge on the use of the GEMS thermochemical solver and HERACLES thermodynamic database, which are specifically aimed at nuclear applications. These initiatives are essential for the development and integration of new models into severe accident (SA) codes, including validating thermodynamic data to predict the behavior 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 modeling aqueous systems.
• Analyzing experimental data to enhance understanding of liquid source term phenomena.
• Developing and validating simulation models, focusing on thermodynamic aspects and geochemical tools to predict fission product behavior.
• Participating in 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.
• Working 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 advantageous.
• Proficiency in programming languages (C++ and Python).
• Independent, self-driven, creative, and solution-oriented.
• Strong written and verbal communication skills, along with a team-player attitude.

At ETH Zurich, we value social and leadership competencies, fostering a collaborative work culture.

Workplace

ETH Zurich offers a stimulating environment for research and interaction with leading experts in the field.

We Offer

• Opportunities for professional development and collaboration with leading experts in the field.
• A chance to make an impact by joining ETH Zurich, which not only supports your professional growth but also actively contributes to positive societal change.
• Numerous benefits, including public transport season tickets, car sharing options, a wide range of sports offered by ASVZ, childcare, and attractive pension benefits.

We Value Diversity and Sustainability

ETH Zurich promotes an inclusive culture, encouraging equality of opportunity and valuing 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.

For more information about the Laboratory of Nuclear Safety and Multiphase Flows, please visit our website. For questions regarding the position, contact Dr. Sergii Nichenko at +41 56 310 22 96 or email 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 our excellent education, cutting-edge research, and direct transfer of new knowledge into society, we foster independent thinking and an environment that inspires excellence. With over 30,000 individuals from more than 120 countries, we collaborate to develop solutions for the global challenges of today and tomorrow.