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.
- Binary fluid mixture model development
- Large scale cryogenic architectures modeling
- Fluid properties database development
- Design of the cryogenic moderator system for the European Spallation Source
- Preparation and coordination of the factory acceptance tests for the cryogenic moderator system
- Performed comparison and numerical calculations for vaious gas turbine blades cooling methods
- Production follow up, commissioning of existing pipeline installations
- Technical documentation verification for pipelines in combined heat power plant, constructed in Poland
- Applied physics student under Horizon 2020 European Union program
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.
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.
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.
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.
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.
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.