Postdoc in Modelling of Advanced Turbomachinery for Liquid Air Energy Storage Systems

Technical University of Denmark


February 20, 2022


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Postdoc in Modelling of Advanced Turbomachinery for Liquid Air Energy

Storage Systems

DTU Mechanical Eng

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Friday 21 Jan 22

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Department of Mechanical Engineering, Technical University of Denmark (DTU), has together with a number of academic and industrial partners just started an exciting international project on a novel large-scale energy storage concept – liquid air energy storage. Currently, we have an opening for a postdoc position at DTU Mechanical Engineering concerning the modelling of turbomachinery. Specifically, the postdoc will address the modelling of advanced two-phase turbomachinery for the air liquefaction process. If you are establishing your career as scientist and you are looking for the best possible foundation for fulfilling your dreams and ambitions, this is your chance. At DTU Mechanical Engineering you will get the chance break new ground at the absolute forefront of what is possible.

The increased use of fluctuating renewable energy sources worldwide, including primarily wind and solar energy, causes imbalance between supply and demand of energy. One of the more promising options to mitigate the variability of renewable energy sources is to use large-scale energy storage systems. The liquid air energy storage system is a novel technology with a high energy density that does not require large storage volumes. At present, the liquid air energy storage technology is at an industrial demonstration level, and further research is required to increase its round-trip efficiency, the ratio of the electricity generated during the discharging process to the electricity consumed during the charging process, making it economically attractive. One of the possibilities to increase the round trip efficiency of the storage system is to use two-phase expansion for the liquefaction process.

Responsibilities and qualifications The research work includes the numerical analysis of the turbomachinery for the liquid air energy storage system using advanced numerical tools. You will primarily focus on advanced two-phase turbomachinery for the air liquefaction process, but you will also address the turbomachinery for the charging and discharging processes. In addition, you will work together with colleagues on the modeling of the whole liquid air energy storage system. There will be fruitful synergies among this project and other on-going projects at the department addressing the liquid air energy storage technology and two-phase turbomachinery, respectively. If you have a passion for research and a mechanical engineering background, including experience of turbomachinery modelling, you may be the person we are looking for. The results of your research will contribute to expand the use of renewable energy sources, reducing carbon dioxide emissions and mitigating climate change.

Examples of your responsibilities are the following:

  • Develop advanced models for analysis of turbomachinery with two-phase flow, considering non-equilibrium effects (for example, differences in temperature and velocity between the two phases).
  • Use the developed models to identify the loss mechanisms due to the presence of the bubbles in the flow and the optimal blading design for the two-phase turbomachinery.
  • Develop expander and compressor designs using mean-line and 3-dimensional aerodynamic design approaches.
  • Evaluate the effects of the turbomachinery design on the performance of the whole liquid air energy storage system.
  • Validate your numerical models using results of experimental work obtained in other projects at DTU and results published in the open literature.
  • Take part in the teaching activities at the department.
  • Contribute to preparing research project proposals.
  • As a formal qualification, you must hold a PhD degree (or equivalent).

    We offer DTU is a leading technical university globally recognized for the excellence of its research, education, innovation and scientific advice. We offer a rewarding and challenging job in an international environment. We strive for academic excellence in an environment characterized by collegial respect and academic freedom tempered by responsibility.

    Salary and terms of employment The appointment will be based on the collective agreement with the Danish Confederation of Professional Associations. The allowance will be agreed upon with the relevant union. The period of employment is 2 years.

    You can read more about career paths at DTU here.

    Further information Further information may be obtained from Associate Professor Fredrik Haglind, tel.: +45 4525 4113.

    You can read more about Department of Mechanical Engineering at www.

    If you are applying from abroad, you may find useful information on working in Denmark and at DTU at DTU – Moving to Denmark.

    Application procedure Your complete online application must be submitted no later than 20 February 2022 (Danish time). Applications must be submitted as one PDF file containing all materials to be given consideration. To apply, please open the link "Apply online", fill out the online application form, and attach all your materials in English in one PDF file. The file must include:

  • Application (cover letter)
  • CV
  • Academic Diplomas (MSc/PhD)
  • List of publications
  • Applications received after the deadline will not be considered.

    All interested candidates irrespective of age, gender, disability, race, religion or ethnic background are encouraged to apply.

    DTU Mechanical Engineering covers the fundamental engineering disciplines within Solid mechanics, Fluid mechanics, Coastal and Maritime Engineering, Energy systems and energy conversion, Materials and Surface Engineering, Manufacturing Engineering, Engineering design and Product development. The department has a scientific staff of about 135 persons, 100 PhD students and a technical/administrative support staff of about 80 persons.

    Technology for people DTU develops technology for people. With our international elite research and study programmes, we are helping to create a better world and to solve the global challenges formulated in the UN's 17 Sustainable Development Goals. Hans Christian Ørsted founded DTU in 1829 with a clear vision to develop and create value using science and engineering to benefit society. That vision lives on today. DTU has 12,900 students and 6,000 employees. We work in an international atmosphere and have an inclusive, evolving, and informal working environment. DTU has campuses in all parts of Denmark and in Greenland, and we collaborate with the best universities around the world.