This website uses cookies (to show videos, interactive maps and to simplify content sharing with friends).
By viewing pages on this site you agree with the usage of cookies.
I agree / more information / I disagree

 
logo logo VisitorsPartnersMedia

Username: Password:

Matjaž Leskovar

Senior Research Associate

Jožef Stefan
Institute
Jamova cesta 39
SI-1000 Ljubljana
Slovenia

Phone: +386 1 5885 271
Fax: +386 1 5885 377
E-mail: matjaz.leskovar@ijs.si

 

 

 

Research Interests

  • Severe accidents in nuclear power plants
  • Fuel coolant interactions, Steam explosions
  • Numerical simulations of multi-phase flow
  • Coupling of thermal-hydraulic and neutronic calculations for fusion reactor
  • MC3D (computer code for the simulation of fuel-coolant interactions, being developed by IRSN, France)
  • MELCOR (computer code for the simulation of severe accidents in nuclear power plants, developed at Sandia National Laboratories, Albuquerque, New Mexico, USA)

Education

Awards

Professional Experience

Management Experience

  • Coordinator of International research program CSARP for Slovenia (from 2015)
  • Chair of TRIGA Mark II Reactor Safety Committee (from 2015)

Professional Societies

Selected Publications

The full list of publications is maintained by COBISS. Links to publications use the Digital Object Identifier System DOI.

Articles in SCI Journals

LESKOVAR, Matjaž, CENTRIH, Vasilij, URŠIČ, Mitja. Analysis of oxidation influence on steam explosion energetics. Annals of Nuclear Energy, ISSN 0306-4549, 2016, vol. 90, str. 441-449, doi: 10.1016/j.anucene.2015.12.037.

LESKOVAR, Matjaž, CENTRIH, Vasilij, URŠIČ, Mitja. Simulation of steam explosion in stratified melt-coolant configuration. Nuclear Engineering and Design, ISSN 0029-5493, 2016, vol. 296, str. 19-29, doi: 10.1016/j.nucengdes.2015.10.026.

LESKOVAR, Matjaž, URŠIČ, Mitja. Ex-vessel steam explosion analysis for pressurized water reactor and boiling water reactor. Nuclear Engineering and Technology, ISSN 1738-5733, 2016, vol. 48, no. 1, str. 72-86, doi: 10.1016/j.net.2015.08.012.

URŠIČ, Mitja, LESKOVAR, Matjaž, MEIGNEN, Renaud. Eulerian modelling of melt solidification impact during fuel-coolant interaction. Annals of Nuclear Energy, ISSN 0306-4549, 2015, 10 str., doi: 10.1016/j.anucene.2015.01.003

PROŠEK, Andrej, LESKOVAR, Matjaž. Use of FFTBM by signal mirroring for sensitivity study. Annals of Nuclear Energy, ISSN 0306-4549, 2015, vol. 76, str. 253-262, doi: 10.1016/j.anucene.2014.09.051.

LESKOVAR, Matjaž, URŠIČ, Mitja. Analysis of PWR ex-vessel steam explosion for axial and side melt release. Nuclear Engineering and Design, ISSN 0029-5493, 2015, 11 str., doi: 10.1016/j.nucengdes.2014.03.014.

URŠIČ, Mitja, LESKOVAR, Matjaž, BÜRGER, Manfred, BUCK, Michael. Hydrodynamic fine fragmentation of partly solidified melt droplets during a vapour explosion. International journal of heat and mass transfer, ISSN 0017-9310, sep. 2014, vol. 76, str. 90-98, doi: 10.1016/j.ijheatmasstransfer.2014.03.066.

MEIGNEN, Renaud, LESKOVAR, Matjaž, URŠIČ, Mitja, et al. Status of steam explosion understanding and modelling. Annals of Nuclear Energy, ISSN 0306-4549, 2014, 9 str., doi: 10.1016/j.anucene.2014.07.008.

HONG, Seong-Wan, PILUSO, Pascal, LESKOVAR, Matjaž. Status of the OECD-SERENA project for the resolution of ex-vessel steam explosion risks. Journal of energy and power engineering, ISSN 1934-8975, 2013, vol. 7, no. 3, str. 423-431.

URŠIČ, Mitja, LESKOVAR, Matjaž. Temperature profile modelling in fuel-coolant interaction codes. Int. j. heat mass transfer. 2012, vol. 55, no. 19/20, str. 5350-5356, doi: 10.1016/j.ijheatmasstransfer.2012.05.052.

URŠIČ, Mitja, LESKOVAR, Matjaž, MAVKO, Borut. Simulations of KROTOS alumina and corium steam explosion experiments : applicability of the improved solidification influence modelling. Nucl. Eng. Des.. 2012, vol. 246, str. 163-174, doi: 10.1016/j.nucengdes.2011.12.021.

URŠIČ, Mitja, LESKOVAR, Matjaž, MAVKO, Borut. Improved solidification influence modelling for Eulerian fuel-coolant interaction codes. Nucl. Eng. Des.. 2011, vol. 241, no. 4, str. 1206-1216, doi: 10.1016/j.nucengdes.2010.05.001.

URŠIČ, Mitja, LESKOVAR, Matjaž, MAVKO, Borut. Material properties' influence in fuel-coolant interaction codes. J. eng. gas turbine power, 2010, vol. 132, no. 7, str. 072901-1-072901-7.

URŠIČ, Mitja, LESKOVAR, Matjaž. Analysis of ex-vessel steam explosion pressure loads. Stroj. vestn., 2010, vol. 56, no. 6, str. 368-376.

PROŠEK, Andrej, LESKOVAR, Matjaž. Extensions of the fast Fourier transform based method for quantitative assessment of code calculations. Elektrotehniški vestnik. 2009, vol. 76, no. 5, str. 251-256.

LESKOVAR, Matjaž. Pressure load estimation during ex-vessel steam explosion. J. eng. gas turbine power, 2009, vol. 131, no. 3, str. 032901-1-032901-7.

CIZELJ, Leon, LESKOVAR, Matjaž, ČEPIN, Marko, MAVKO, Borut. A method for rapid vulnerability assessment of structures loaded by outside blasts. Nucl. Eng. Des.. 2009, vol. 239, no. 9, str. 1641-1646, doi: 10.1016/j.nucengdes.2008.07.004.

LESKOVAR, Matjaž, URŠIČ, Mitja. Estimation of ex-vessel steam explosion pressure loads. Nucl. Eng. Des.. 2009, vol. 239, no. 11, str. 2444-2458.

PROŠEK, Andrej, LESKOVAR, Matjaž, MAVKO, Borut. Quantitative assessment with improved fast Fourier transform based method by signal mirroring. Nucl. Eng. Des.. 2008, vol. 238, no. 10, str. 2668-2677.

URŠIČ, Mitja, LESKOVAR, Matjaž. Analysis of TROI-13 steam explosion experiment. Sci. Technol. Nucl. Install. 2008, 9 str., doi: 10.1155/2008/852047.

HORVAT, Andrej, LESKOVAR, Matjaž, MAVKO, Borut. Comparison of heat transfer conditions in tube bundle cross-flow for different tube shapes. Int. j. heat mass transfer. 2006, vol. 49, no. 5-6, str. 1027-1038.

ČEPIN, Marko, CIZELJ, Leon, LESKOVAR, Matjaž, MAVKO, Borut. Vulnerability analysis of a nuclear power plant considering detonations of explosive devices. J. Nucl. Sci. Technol., 2006, vol. 43, no. 10, str. 1258-1269.

CIZELJ, Leon, KONČAR, Boštjan, LESKOVAR, Matjaž. Vulnerability of a partially flooded PWR reactor cavity to a steam explosion. Nucl. Eng. Des.. 2006, vol. 236, no. 10, str. 1617-1627.

LESKOVAR, Matjaž, MAVKO, Borut. Simulation of the Phebus FPT1 severe accident experiment with the MELCOR computer code. Stroj. vestn., 2006, letn. 52, št. 3, str. 142-160.

LESKOVAR, Matjaž, KONČAR, Boštjan, CIZELJ, Leon. Simulation of a reactor cavity steam explosion with a general purpose computational fluid dynamics code. Stroj. vestn., 2006, letn. 52, št. 5, str. 292-308.

CLÉMENT, Bernard, LESKOVAR, Matjaž. Thematic network for a Phebus FPT-1 international standard problem (THENPHEBISP). Nucl. Eng. Des.. 2005, vol. 235, str. 347-357.

LESKOVAR, Matjaž, MAVKO, Borut. An original combined multiphase model of the steam-explosion premixing phase. Stroj. vestn., 2002, letn. 48, št. 8, str. 438-448.

LESKOVAR, Matjaž, MAVKO, Borut. Simulation of the isothermal QUEOS steam-explosion premixing experiment Q08. Stroj. vestn., 2002, letn. 48, št. 8, str. 449-458.

LESKOVAR, Matjaž, MAVKO, Borut. Steam explosion premixing phase simulation using an original combined multiphase model. Trans. Am. Nucl. Soc., 2001, vol. 85, str. 354-255.

LESKOVAR, Matjaž, MARN, Jure, MAVKO, Borut. Numerical analysis of multiphase mixing - comparison of first and second order accurate schemes. Fluid mech. res., 2000, vol. 27, str. 1-32.

LESKOVAR, Matjaž, MARN, Jure, MAVKO, Borut. The influence of the accuracy of numerical methods on steam explosion premixing-phase simulation results. Stroj. vestn., 2000, vol. 46, št. 9, str. 607-621.

LESKOVAR, Matjaž, MAVKO, Borut, MARN, Jure. High resolution method applied to premixing phase of steam explosion. Trans. Am. Nucl. Soc., 1997, vol. 77, str. 433-434.

LESKOVAR, Matjaž, MARN, Jure. Steam explosions : probabilistic approach. V: MAHRENHOLTZ, Oskar (ur.), KREUZER, E... (ur.). 3rd International Congress on Industrial and Applied Mathematics (ICIAM 95), Hamburg, Germany, July 3-7, 1995. ICIAM/GAMM 95, Applied sciences, especially Mechanics : contributed lecture and poster presentation, (Zeitschrift für Angewandte Mathematik und Mechanik, Vol. 76, Suppl. 5, 1996). Berlin: Akademie Verlag, 1996, 1996, vol. 76, suppl. 5, str. 291-292.

MARN, Jure, LESKOVAR, Matjaž. Simulation of steam explosion premixing phase using probabilistic multiphase flow equations. Fluid mech. res., 1996, vol. 22, št. 1, str. 29-40.

Chapters in Books

PROŠEK, Andrej, LESKOVAR, Matjaž. Use of fast Fourier transform for sensitivity analysis. V: SALIH, Mohammed Salih (ur.). Fourier transform - signal processing and physical sciences. Rijeka: InTech, cop. 2015, pp. 51-77.

LESKOVAR, Matjaž. Simulation of ex-vessel steam explosion. V: TSVETKOV, Pavel V. (ur.). Nuclear power - operation, safety and environment. Rijeka: InTech, cop. 2011, pp. 207-236.

PROŠEK, Andrej, LESKOVAR, Matjaž. Application of fast Fourier transform for accuracy evaluation of thermal-hydraulic code calculation. V: NIKOLIĆ, Goran S. (ur.). Fourier transforms - approach to scientific principles. Rijeka: In-Tech, cop. 2011, pp. 447-468.

LESKOVAR, Matjaž, MAVKO, Borut. Opis mešalne faze parne eksplozije z izvirnim kombiniranim večfaznim modelom. V: FLORJANČIČ, Urška (ur.), MUSAR, Aleš (ur.). Raziskovalno delo podiplomskih študentov v Sloveniji - novo tisočletje, Naravoslovje in tehnika : jesen - zima. Ljubljana: Društvo mladih raziskovalcev Slovenije, 2001.

Scientific Research Projects (selected recent)

OECD-NEA: SERENA (Steam Explosion REsolution for Nuclear Applications), Operating agents: CEA, France and KAERI, Korea, JSI Project leader: M. Leskovar (Vice-Chairman of Programme Review Group and Leader of Analytical Working Group)

7th Framework Programme of the EC: Network of Excellence SARNET2 (Severe accident research network of excellence 2), Coordinator: IRSN, France, JSI Project leader: M. Leskovar

EFDA: Power Plant Physics & Technology Design Tools and Methodologies - Blanket System for DEMO fusion power plant, JSI Project leader: M. Leskovar

International Research Project ARRS-CEA (France): Investigation of Stratified Steam Explosions, Project leader: M. Leskovar

KAERI (Korea Atomic Energy Research Institute)-JSI Cooperation: Fuel-Coolant Interactions Relating to Steam Explosions, JSI project leader: M. Leskovar

IRSN (France)-JSI Cooperation: MC3D Software Agreement, JSI project leader: M. Leskovar

 

NEWS
SAMHYCO-NET second meeting
SAMHYCO-NET second meeting, Karlsruhe, Germany, 3rd – 7th June 2018 The SAMHYCO-NET project is an in-kind project, created on the initiative of the “Institute of Rad...
12th International Conference of the Croatian Nuclear Society - Nuclear Option for CO2 Free Energy Generation
12th International Conference of the Croatian Nuclear Society - Nuclear Option for CO2 Free Energy Generation   The two-year international conference "Nuclear Option for CO2 Free Energy Generation" is organized by...
Spring 2018 CAMP meeting, Ottawa, Canada, 28.5. - 30.5.2018
Spring 2018 CAMP meeting, Ottawa, Canada, 28.5. - 30.5.2018 CAMP (Code Applications and Maintenance Program) is the largest research program under the auspices of the United States Nuclear Regulat...
BEPU 2018 Conference, Lucca, Italy, 13.05. - 19.05, 2018
BEPU 2018 Conference, Lucca, Italy, 13.05. - 19.05, 2018 The BEPU-2018 International Conference (Best Uncertainty Plus Assessment) covers developments, applications and advancements in simulation programs and methods for calcul...
WP5 Workgroup SOTERIA Project meeting
WP5 Workgroup SOTERIA Project meeting, EDF Lab Les Renardières, France, 17-18 May 2018 The SOTERIA project (»Safe long term operation of light water reactors based on improved understanding of ...
GA-21 EUROfusion, Sofia, Bolgaria, 10.04.-12.04., 2018
GA-21 EUROfusion, Sofia, Bolgaria, 10.04.-12.04., 2018 European fusion research under Horizon 2020 brings together the targeted 5-year (2014-2018) fusion program EUROfusion, under the auspices of the EURATOM Treaty. The main ob...
22nd meeting of SNETP Management Board
22nd meeting of SNETP Management Board, Brussels, 24.1.2018 The European Technology Platform for Sustainable Nuclear Energy SNETP, joins more than 117 nuclear stakeholders from all European nuclear countries. Amon...
General Assembly, Governing Board and 15th Anniversary of ENEN
General Assembly, Governing Board and 15th Anniversary of ENEN, Brussels, Belgium, 28.2.-2.3.2018 More than 60 ENEN members represent the majority of European universities and research institutes that educate in t...
Initial meeting of the ENER / D3 / 2017-209-2 project, Luxembourg, Luxembourg
Initial meeting of the ENER / D3 / 2017-209-2 project, Luxembourg, Luxembourg, 18-19 February 2018 The Directorate-General for Energy of the European Commission commissioned the association of autho...
Seminar "Euratom Nuclear Fission Research and Training: What Are the New Needs?" and the General Assembly of the SNETP, Brussels, Belgium
Seminar "Euratom Nuclear Fission Research and Training: What Are the New Needs?" and the General Assembly of the SNETP, Brussels, Belgium, 20. - 22. 2. 2018 The European Commission organized a semin...
WPDC Final Meeting, Garching, Germany
Final Meeting of WPDC (Diagnostic & Control), Garching, Germany, 20.12.2017 The WPDC (Diagnostic & Control) project is one of the European Fusion Development Association...
GA-20 EUROfusion, Barcelona, Spain
GA-20 EUROfusion, Barcelona, ​​Spain, 18-19 December, 2017 ...
ANS Winter Meeting, Washington
ANS Winter Meeting, Washington, USA, 28.10.-2.11.2017 Each year, the American Nuclear Society organizes two major conferences called the Summer and Winter Meetings. The winter meeting in 2017 was dedicated primari...
H2020 project ANNETTE Working Meeting, Halden, Norway
Working meeting within the H2020 project ANNETTE, Halden, Norway, 10.12.-12.12.2017 The ANNETTE project (Networks for Nuclear Education and Transfer of Expertise) is aimed at promoting coordinated participation of all nuclear stakehold...
EUROSAFE Forum, TSO Cafe, Governing Board and General Assembly of ETSON, Paris, France
EUROSAFE Forum, TSO Cafe, Governing Board and General Assembly of ETSON, Paris, France, 5.11.-8.11.2017 The EUROSAFE Forum was held on 6th and 7th of November in 2017. It was organized...
ENEN+ meeting for work packages WP1 and WP2, Budapest, Hungary
ENEN+ meeting for work packages WP1 and WP2 Budapest, Hungary, 30. 11. - 1. 12. 2017 The ENEN+ project entitled "A...
Fall 2017 CAMP Meeting, Ann Arbor, USA
Fall 2017 CAMP Meeting, University of Michigan, MI, Ann Arbor, USA, 28 - 30. 11. 2017 CAMP (Code Applications and Maintenance Program) is a research program under the auspices of the US NRC (Nuclear Reg...
3. MITHYGENE-ETSON hydrogen deflagration benchmark meeting
Third meeting on MITHYGENE-ETSON hydrogen deflagration benchmark Paris, France, 22nd and 23rd November 2017 As part of the French MITHYGEN...
2. SOTERIA project General Assembly meeting
2nd meeting of the General Assembly of the SOTERIA project, Madrid, Spain, 6-8 November 2017 The SOTERIA project ("Safe long-term operation of light-water reactors based on a better understanding of radiation effe...
SAMHYCO-NET Kick-Off Meeting, Fontenay-aux-Roses, France
SAMHYCO-NET Kick-Off Meeting, Fontenay-aux-Roses, France   The SAMHYCO-NET project is an in-kind project, created on the initiative of the Institute of Radioprotection et de Sûreté Nucléaire (IR...
ENEN+ Kick-Off Meeting and ENEN Association Board of Governors Meeting
ENEN+ Kick-Off Meeting and ENEN Association Board of Governors Meeting, Brussels, Belgium, 2.-4. 10. 2017 ENEN+ Project entitled »Attract, Retain and Develop New Nuclear Talents Beyond Acad...
CSARP / MCAP meeting and MELCOR users workshop
CSARP / MCAP meeting and MELCOR users workshop After a severe accident in the Fukushima nuclear power plant, nuclear safety standards have been tightened. Thus, severe accident analyzes are becoming an integral part of the safe...
NURETH-17
NURETH-17 Conference, 3. - 8. September 2017, Xi'an, Kitajska From 3rd to 8th September 2017 two of our colleagues attended the 17th International Topical Meeting on Nuclear Reactor Thermal Hydraulics NURETH-17, o...
SMiRT 2017 Conference
International Conference on Structural Mechanics in Reactor Technology (SMiRT), 20. - 25. Avgust 2017, Busan, South Korea The international conference on Structural Mech...
Presentation of the Reactor Engineering Division, JSI to the URSJV
Presentation of the Reactor Engineering Division, JSI to the URSJV   On Wednesday, August 23, 2017, employees of the Reactor Engineering Division, JSI visit the URSJV (Uprava Republike Slovenije za jedrsko varnost ...
Second MITHYGENE-ETSON hydrogen deflagration benchmark meeting
Second MITHYGENE-ETSON hydrogen deflagration benchmark meeting, Paris, France, June 16, 2017   As part of the French project MITHYGENE, active since 2013, and joined also by the ETSON memb...
Meeting for the preparation of the SET action plan for the nuclear energy
Meeting for the preparation of the SET action plan for the nuclear energy Brussels, Belgium, 13.7.2017   Strategic Energy Technologies (SET) Plan is one of the European Union's most import...
Lecture at the regional course for the DEVCO Directorate
Lecture at the regional course for the DEVCO Directorate Yerevan, Armenia, 26-28 April 2017   Within the framework of the Instrument for Nuclear Safety Cooperation (INSC) funded by the Eu...
Invited lecture at the Nuclear 2017 conference
Invited lecture at the Nuclear 2017 conference Pitesti, Romania, 23.-26.5.2017   The Nuclear 2017 conference, the annual conference of Romanian nuclear experts, was attended by about 200 ...
Meeting of the ETSON Management Board and ETSON General Assembly
Meeting of the ETSON Management Board and ETSON General Assembly Frascati, Italy, June 25-27 2017   Nearly ten years ago, ETSON was established with the aim of professional networking of ...
18. Meeting of the General Assembly of EUROfusion
18. Meeting of the General Assembly of EUROfusion Culham, United Kingdom, July 13 - July 15, 2017  European fusion research in the frame of the Horizon 2020 a...
Fermi course: Leading a nuclear business
Fermi course: Leading a nuclear business. Competence development for academic teachers, Uppsala, Sweden, 29th - 30th May 2017 On 29th and 30th of May 2017 dr. Tiselj attended a workshop for teachers in ...
Spring 2017 CAMP Meeting
Spring 2017 CAMP Meeting,  Warsaw, Poland, 22.-24. 5. 2017 CAMP (Code Applications and Maintenance Program) is the largest research program conducted under the auspices of the United States fed...
OECD NEST Kick-off Workshop, Paris, France, 11.-12.5.2017
Within the framework of the OECD (Organization for Economic Cooperation and Development) operates NEA (Nuclear Energy Agency), which, inter alia, through various projects in the field of nuclear energy enables and encourages cooperation between researc...
17th EUROfusion General Assembly Meeting
17th EUROfusion General Assembly Meeting, Cadarache, France, 10.-12.04.2017 European fusion research under Horizon 2020 combines target-oriented 5-year (2014-2018) EUROFusion program, which takes place under the auspices of the...
OECD-NEA PIRT for SFP in LOCA
OECD-NEA PIRT for SFP in LOCA, Pariz (Francija), 03-05.04.2017  Nuclear Energy Agency (NEA), which operates within the Organization for Economic Cooperation and Development (OECD) has currently...
Meeting of European MELCOR users
Meeting of European MELCOR users, Madrid, Spain, 6-7.4.2017 After the severe accident in the Fukushima nuclear plant, standards for nuclear safety have tightened. Thus, the analysis of severe accidents are becoming an integral ...
ENEN Management Board and General Assembly Meeting
ENEN Management Board and General Assembly Meeting, Manchester, United Kingdom, 28.2.-03.04.2017 More than 60 members of the ENEN Association represents the majority of European universities and research institut...
NUGENIA Forum and General Assembly
NUGENIA Forum and General Assembly, Amsterdam, 27.-29.3.2017 NUGENIA (Nuclear Generation II & III Association) is an organization that brings together (mostly) European ...
6th International Symposium and Seminar on Global HRD for 3S
6th International Symposium and Seminar on Global Human Resource Development for Safety, Security and Safeguards, Tokyo Institute of Technology, Tokyo, Japan The 6th International Symposium and Se...
EUROSAFE Conference Program Committee, meeting with Mr. William Magwodom, Director of the OECD/NEA
EUROSAFE Conference Program Committee, meeting with Mr. William Magwodom, Director of the OECD / NEA Paris, France, 31.1.-2.2.2017 The EUROSAFE FORUM confere...
Safety culture NUSHARE workshop
SAFETY CULTURE NUSHARE WORSHOP, Madrid, Spain, 24-17.1.2017 NUSHARE project is aimed at raising awareness and educating decision-makers about nuclear safe...
MITHYGENE-ETSON hydrogen deflagration benchmark kickoff meeting
MITHYGENE-ETSON hydrogen deflagration benchmark kickoff meeting, Orleans, France, 21/03/2017 Within the French project MITHYGENE active from 2013, with ETSON members joined, an experimental device ENACCEF2 was des...
4th NUGENIA-SARNET TA2 review meetings on in- and ex-vessel corium behaviour
4th NUGENIA-SARNET TA2 review meetings on in- and ex-vessel corium behaviour, Puerto de la Cruz, Spain, 2.3.-10.3.2017 NUGENIA (NUclear GENeration II & ...
5. work meeting of SESASME project, NRG, Petten, Netherlands
SESAME project is a project in the context of the European project Horizon 2020. The three main objectives of the project are: development and validation of advanced numerical approaches for the design and safety evaluation of advanced reactors; achiev...
Workgroup WP5 Soteria project meeting
Workgroup WP5 Soteria project meeting, EDF Lab Les Renardières, France, March 6. - 8. 2017 SOTERIA project (&...
mobile view