Jakub TKACZUK
About

An open minded researcher with international experience, what lets me think that I can easily adjust myself to the scope of proposed work. My investment into the project, cooperation aptitudes and technical knowledge are my strong advantages. 

 

Experience
Jan 2018 - Apr. 2018
Visiting Researcher at the Material Measurement Laboratory
National Institute of Standards and Technology, Boulder, CO, USA
  • Binary fluid mixture model development
Mar. 2018 - Present
Marie Curie fellow in low-temperatures laboratory
French Alternative Energies and Atomic Energy Commission, Grenoble, France
  • Large scale cryogenic architectures modeling
  • Fluid properties database development
Feb. 2017 - Feb. 201
Gryogenic Engineer at the Faculty of Mechanical Engineering
Technical University of Dresden, Germany
  • Design of the cryogenic moderator system for the European Spallation Source
  • Preparation and coordination of the factory acceptance tests for the cryogenic moderator system
Apr. 2013 - Feb. 201
Educator
Copernicus Science Center, Warsaw, Poland
Jun. 2012 - Aug. 201
Thermal Engineering Trainee
Engineering Design Centre of the Institute of Aviation, Warsaw, Poland
  • Performed comparison and numerical calculations for vaious gas turbine blades cooling methods
Dec 2010 - Feb 2011
IFL Consulting Engineers
Pipeline Design Intern
  • Production follow up, commissioning of existing pipeline installations
  • Technical documentation verification for pipelines in combined heat power plant, constructed in Poland
Expertise
Computer skills
Computer skills
Critical thinking
Critical thinking
Presentation
Presentation
Problem solving
Problem solving
Public speaking
Public speaking
Software
Software
Education
Mar 2018 - Present
Doctoral student at the Faculty of Physics
Université Grenoble-Alpes
  • Applied physics student under Horizon 2020 European Union program
Oct. 2012 - Oct. 201
M.Sc, Eng in Power Engineering
Warsaw, Poland
Oct 2008 - Jun. 2012
B.Sc in Power Engineering
Warsaw University of Technology
Work on project

My work is focusing on the equations of state for the cryogenic fluids mixtures. It was started by the development of the Helmholtz energy equations for the noble gases mixtures: helium-neon, helium-argon, and neon-argon. After successful equations development, a question on their accuracy in the cryogenic temperature range was raised. In order to obtain additional experimental data for validation and possible improvement of the helium-neon equation, a Joule-Thomson coefficient measurements test bench was designed and is under construction. The performed modelling work is useful for the design and analysis of the Helium-Neon refrigeration development performed in the EASITrain network as well as for other academic or industrial applications.

 

 

 

What is the key question you try to address?

The main question I was trying to answer was related to the development of the efficient cryogenic cycles. However, the first attempt in addressing this question showed the lack of reliable fluid properties data for gas mixtures, therefore the work was refocused on the fluid properties and their modelling. It is now continued with further equations of state development, as well as the experimental setup allowing for the confirmation of the gas mixture properties modelling. This research can be beneficial not only for CERN and the Future Circular Collider, but for institutes and industries engaged in the applied cryogenics for space and large scientific facilities as well as for industrial applications such as hydrogen liquefaction. Any reliable design of the cryogenic cycle has to start with reliable equation of state.

 

 

 

Which are the key tools that you are using in your research?

The main tool that I am using is Python combined with the regression algorithms previously developed at the National Institute of Standards and Technology in Fortran.

 

 

 

 

Which are the latest results of your research

The equations of state for the binary mixtures of helium, neon, and argon are finalized. The results include models capable of calculating the fluid mixture equilibria, as well as the multiple thermodynamic properties useful for any engineering study. Those include enthalpy, pressure or speed of sound as a function of density and temperature. The multiphase vapor-liquid and gas-gas equilibria for the helium-argon equation is presented with the isotherms (solid lines) overlaid with the experimental data as an example of the possible calculations to be performed with the finalized equations.

Image removed.

 

 

What are the next steps?

The next steps include the experimental campaign with an existing cryogenic test rig at CEA-Grenoble adapted to the needs of the Joule-Thomson coefficient measurements. This step will allow to confirm the already obtained modeling results. At the same time, this experimental work will broaden my hands-on experience in design and operation of cryogenic test benches, as well as in instrumentation and high-accuracy measurements.

 

Which are the potential applications?

The fields where accurate fluid properties equations are required are as wide as the engineering studies can reach. Starting from the Future Circular Collider, magnetic fusion tokamaks, through the space refrigerators with the Brayton or the Joule-Thomson cycles to welding processes, hydrogen liquefaction or transport industry. The more accurate the fluid properties within the design process, the higher the real performance.