Doctoral Student in Grey-Box Modeling of Multiphase Flows

Keen to push the frontiers of multiphase reactor modeling and accelerate the scale-up of emerging net-zero technologies? Join us at the Department of Chemistry and Chemical Engineering! About us  Our research group at the division of Chemistry and Biochemistry advances multiphase flow and separation science to accelerate industrial innovation and implementation. About the research project   This project targets the development of advanced grey-box modeling frameworks for multiphase flow systems, combining mechanistic, multi-scale flow models with data-driven inference and uncertainty quantification. This involves formulation, implementation, and validation of novel hybrid models. The study emphasizes methodological innovation, scalable algorithms, and translation to industrially relevant multiphase reactors and separation processes, with strong expectations of high-impact publications and intellectual leadership. Who we are looking for The following requirements are mandatory: • Master's degree (masterexamen) of 120 credits or a Master’s degree (magisterexamen) of 60 credits* in chemical engineering, mechanical engineering, applied mathematics, or a closely related field. • Strong background in computational modeling and numerical methods • Experience with multiphase flow modeling (e.g., TFM, CFD-DEM, DNS, LBM) • Solid programming skills • Experience working in Linux/HPC environments • Ability to conduct independent research and publish in peer-reviewed journals • Strong written and verbal communication skills in English The following experience will strengthen your application:  • Experience with grey-box, hybrid, or reduced-order modeling techniques • Familiarity with data-driven methods • Experience collaborating in interdisciplinary research teams • Background in chemical reactors, separation processes, or process systems engineering What you will do • Develop grey-box models that combine first-principles multiphase flow descriptions with data-driven components • Formulate and implement parameter estimation and system identification methods for multiphase flow models • Integrate experimental, pilot-scale, or high-fidelity simulation data into model calibration and validation workflows • Design and run numerical simulations of multiphase flow systems and reactors • Quantify model uncertainty and predictive confidence, including sensitivity and identifiability analyses • Compare grey-box models against purely mechanistic and purely data-driven approaches • Optimize model performance for computational efficiency and robustness • Document, publish, and present research results Contract terms   • The Doctoral student positions are fully funded from start.  • The position is a fixed-term appointment of four years, with the possibility to teach up to 20%, which extends the position up to five years.  • A starting salary of 34,550 SEK per month (valid from May 25, 2025).  • Doctoral studies require physical presence throughout the entire study period. A valid residence permit must be presented by the study start date; otherwise the admission may be withdrawn.  What we offer  • As a Doctoral student at Chalmers, you are an employee and enjoy all employee benefits. Read more about  working at Chalmers  and our benefits for employees.  • A dynamic and inspiring working environment in the coastal city of Gothenburg.  • Read more about Sweden’s generous parental leave, subsidized day care, free schools, healthcare etc at Move To Gothenburg.  Chalmers is dedicated to improving gender balance and actively works with equality projects, such as the GENIE Initiative for gender equality and excellence.  If Swedish is not your native language, Chalmers offers Swedish courses to help you settle in. Find more general information about doctoral studies at Chalmers here.   Application procedure  The application should be written in English and attached as PDF-files, as below. Maximum size for each file is 40 MB. Please note that the system does not support Zip files.  CV  • A comprehensive CV, including a complete list of publications.  Personal letter  • A brief introduction about yourself and what drives you. • A brief motivation as to why you are interested in this position.  • A summary of your previous research fields and key research outcomes that are relevant to this position.  • An outline of your future goals and research focus.  Bachelor’s and, if available, master’s thesis together with the transcripts.  Use the button at the foot of the page to reach the application form.   Please note: The applicant is responsible for ensuring that the application is complete. Incomplete applications and applications sent by email will not be considered. Contact details to references will be requested after the interview.  We welcome your application no later than 28 February 2026. For questions, please contact:   Jia Wei Chew, Professor jia.chew@chalmers.se   *** Chalmers declines to consider all offers of further announcement publishing or other types of support for the recruiting process in connection with this position. ***    Chalmers University of Technology in Gothenburg conducts research and education in technology and natural sciences at a high international level. The university has 3100 employees and 10,000 students, and offers education in engineering, science, shipping and architecture. With scientific excellence as a basis, Chalmers promotes knowledge and technical solutions for a sustainable world. Through global commitment and entrepreneurship, we foster an innovative spirit, in close collaboration with wider society.  Chalmers was founded in 1829 and has the same motto today as it did then: Avancez – forward.