Mihael Boštjan Končar

Researcher and PhD student in Energy and Nuclear Engineering, enrolled in a joint ("Cotutelle") doctoral program at the Faculty of Mechanical Engineering, University of Ljubljana, and the Institute of Nuclear Technology and Energy Systems at the University of Stuttgart (Institut für Kernenergetik und Energiesysteme, Universität Stuttgart).

e-mail: MihaelBostjan.Koncar@fs.uni-lj.si

GSM: +386 41 617 330

Room: SI-67 (currently working at IKE, Germany)

Research and Professional Fields:

• System modeling of nuclear power plants with advanced small and micro reactors (SMRs and MMRs)
• Computational fluid dynamics of multiphase systems with phase change
• Measurements on large thermal energy systems
• Thermodynamic analysis of thermal energy systems
• Monitoring of maintenance and overhaul activities at nuclear facilities within the authorized supervision of the Slovenian Nuclear Safety Administration (URSJV)

Collaboration on Projects with Industrial Partners:

• Krško Nuclear Power Plant: acceptance testing of the high-pressure turbine after upgrade
• Brestanica Thermal Power Plant: acceptance test of the gas unit 7
• Šoštanj Thermal Power Plant: efficiency measurements of unit 6 after fuel modification
• Ljubljana Cogeneration Plant: acceptance test of the combined cycle (gas-steam) plant

Education:

• Master of Science in Mechanical Engineering, Faculty of Mechanical Engineering, University of Ljubljana, 2023
• Thesis title: Modeling of severe accidents in sodium-cooled fast nuclear reactors, Supervisors: Prof. Dr. Mihael Sekavčnik, Dr. Mitja Uršič (JSI R4)
• Bachelor of Science in Mechanical Engineering, Faculty of Mechanical Engineering, University of Ljubljana, 2020.
• Thesis title: Grid measurements of thermodynamic properties of flue gases in large channels. Supervisor: Prof. Dr. Mihael Sekavčnik

Work Experience:

• Student Researcher, Reactor Engineering Division R4, Jožef Stefan Institute, 2021-2023.
• Research areas: simulations of multiphase systems using CFD methods, melt-coolant interactions, severe accidents, experimental analysis of two-phase flows (IR thermography, PIV, PTV)
• Student Work, Laboratory for Heat and Power, Faculty of Mechanical Engineering, University of Ljubljana, 2020-2023.
• Research areas: measurements and analyses of large thermal energy systems (TEŠ 6, TE-ToL, Tanin Sevnica)

Membership in Professional Associations:

• Nuclear Society of Slovenia (DJS)
  • Position: Secretary and International Affairs Representative for Young Generation Network (YGN)
• European Nuclear Society, Young Generation Network (ENS YGN)
  • Position: Core Comittie Representative for Slovenian YGN

Main Research and Academic Achievements:

• University Prešeren Award for Master’s Thesis, 2023.
• "Young Author Award" for the paper: "Film Boiling Simulation around Cylinder with ANSYS Fluent" at the conference "Nuclear Energy for New Europe", Bled, 2020.

Selected Publications in Scientific Literature:

• KONČAR, Mihael Boštjan, MIKUŽ Blaž, TEKAVČIČ Matej. Measurement of Radiative Transport Properties of Water and Refrigerant R245fa. V: ŽAGAR, Tomaž (ed.). NENE 2023: 32nd International Conference Nuclear Energy for New Europe : proceedings : September 11-14, Portorož. Ljubljana: Nuclear Society of Slovenia, 2023. Str. 425.1-425.9.
• LESKOVAR, Matjaž, URŠIČ, Mitja, KOKALJ, Janez, KONČAR, Mihael Boštjan. Uncertainty Analysis of Severe Accident Scenario in Krško NPP. V: ŽAGAR, Tomaž (ed.). NENE 2023 : 32nd International Conference Nuclear Energy for New Europe : proceedings : September 11-14, Portorož. Ljubljana: Nuclear Society of Slovenia, 2023. Str. 713.1-713.10.
• LESKOVAR, Matjaž, URŠIČ, Mitja, KOKALJ, Janez, KONČAR, Mihael Boštjan. Analiza negotovosti izbranega scenarija težke nesreče v NEK. 2023. IJS delovno poročilo, 14418.
• KONČAR, Mihael Boštjan, TEKAVČIČ, Matej, URŠIČ, Mitja. Application of enhanced phase-change model for simulation of film boiling around a cylinder. V: JENČIČ, Igor (ur.). NENE 2022: 31st International Conference Nuclear Energy for New Europe: proceedings: September 12-15, Portorož. Ljubljana: Nuclear Society of Slovenia, 2022. Str. 414.1-414.8.
• KONČAR, Mihael Boštjan, TEKAVČIČ, Matej, URŠIČ, Mitja. Film boiling simulation around cylinder with ANSYS fluent. V: CIZELJ, Leon (ur.), TEKAVČIČ, Matej (ur.). NENE 2021 : 30th International Conference Nuclear Energy for New Europe : September 6-9, Bled, Slovenia: NENE 2021 conference proceedings. Ljubljana: Nuclear Society of Slovenia, 2021. Str. 619.1-619.8.