Projektitutkija Joonas Telkkä

E-mail: Joonas.Telkka@lut.fi
Mobile phone: +358 50 375 7765
CV:
Uploaded on: 29/10/2019

Current Organisation
Nuclear Engineering (Superior organisation: Laboratory of Energy Technology)

Research Interest
Experimental thermal hydraulics is needed to increase knowledge on functioning of nuclear power plants (NPP) and thus to enhance the safety of NPPs. Test facilities at LUT nuclear safety research laboratory are used either to ensure the functioning of safety systems of NPPs or to gain data for the validation of the computer codes. These codes are used to analyze the safety features of light water reactors. In the doctoral research advanced measurement techniques are used to acquire more information on thermal hydraulics of NPPs. Among these are particle image velocimetry (PIV) and wire mesh sensors (WMS).

Particle image velocimetry is a flow visualization technique, which allows for capturing velocity information of flow fields. PIV is based on illuminating of small tracer particles added to the flow with a laser apparatus. The movement of these illuminated particles is recorded with a camera system and converted into velocity information with a data acquisition system.

Wire mesh sensors are used to gain information on multiphase flows. WMS is based on the difference of multiphase flow phases regarding an electrical property, i.e. conductivity or permittivity/capacitance. WMS can be used to determine void fraction distributions, bubble size distributions and velocity distributions of multiphase flows.

Teaching Experience
Nuclear energy, nuclear power plant engineering, (experimental) thermal hydraulics.

Projects as Project Manager
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PAssive Systems: Simulating the Thermal-hydraulics with ExperimentaL Studies (01/09/2020 - 29/02/2024)
Funder: European Commission
Development of Thermal-hydraulic Infrastructure at LUT (01/01/2018 - 31/03/2019)
Funder: Other Finnish
Development of Thermal-hydraulic Infrastructure at LUT (01/01/2017 - 31/03/2018)
Funder: Other Finnish



Projects as Co-Investigator
Advanced PTS Analysis for LTO (01/10/2020 - 30/09/2024)
Funder: European Commission



Publications
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Report on advanced measuring techniques 2018 (2018)
D4 Published development or research report or study
Telkkä Joonas, Hujala Elina, Pyy Lauri
Short report on PWR PACTEL maintenance (2018)
D4 Published development or research report or study
Telkkä Joonas
Development of thermal-hydraulic infrastructure at LUT (INFRAL) (2017)
D4 Published development or research report or study
Telkkä Joonas, Hujala Elina, Pyy Lauri
SAFIR2018 – The Finnish Research Programme on Nuclear Power Plant Safety 2015–2018, Interim Report
Estimation of velocity fields from the axial wire-mesh sensor data (2017)
A1 Journal article (refereed), original research
Telkkä Joonas, Ylönen Arto, Hyvärinen Juhani, et al.
Nuclear Engineering and Design
Integral and separate effects tests on thermal-hydraulic problems in reactors (INTEGRA) (2017)
D2 Article in a professional research book (incl. editor’s introduction)
Riikonen Vesa, Kouhia Virpi, Kauppinen Otso-Pekka, et al.
VTT Technology
SAFIR2018 – The Finnish Research Programme on Nuclear Power Plant Safety 2015–2018, Interim Report
Modularity Based Requirements of MOTEL (2017)
D4 Published development or research report or study
Telkkä Joonas, Hyvärinen Juhani, Kauppinen Otso-Pekka
Status report on the advances in thermal hydraulic measurements (2017)
Other
Pyy Lauri, Telkkä Joonas, Hujala Elina
SAFIR2018 Programme - The Finnish Research Programme on Nuclear Power Plant Safety 2015 - 2018
D33.32.15 – CFD modelling of condensation in suppression pools; final report (2016)
Other
Tanskanen Vesa, Hujala Elina, Puustinen Markku, et al.
Facility for research on passive heat removal (2016)
Other
Telkkä Joonas, Kauppinen Otso-Pekka, Kouhia Virpi, et al.
SAFIR2018 Programme - The Finnish Research Programme on Nuclear Power Plant Safety 2015 - 2018, http://safir2018.vtt.fi.
Research based requirements of MOTEL (2016)
Other
Telkkä Joonas, Hyvärinen Juhani
SAFIR2018 Programme - The Finnish Research Programme on Nuclear Power Plant Safety 2015 - 2018, http://safir2018.vtt.fi.




Last updated on 2019-29-10 at 03:02