International Journal of Aerospace Sciences

The International Journal of Aerospace Sciences (IJAS) is an international bi-monthly peer-reviewed journal designed to be of wide range of interest and use to all those concerned with research in aerospace sciences and their applications in research establishments, industry and universities. IJAS publishes original papers, review articles related to all fields of aerospace research. Before submission of your article(s) to the International Journal of Aerospace Sciences, please e-mail an article abstract (less than 150 words) with the first and last name of all authors, their affiliations, and the corresponding author's e-mail address to the Editor-In-Chief, Dr. Amir S. Gohardani via the e-mail address: Dr.Amir.Shahram.Gohardani.IJAS@Gmail.com. Kindly, await an approval confirmation from the Editor-In-Chief before submitting your article into the electronic manuscript tracking and peer review system.

Tomaz Katrasnik

Editorial Board Member of International Journal of Aerospace Sciences

Associate Professor, University of Ljubljana, Slovenia

Research Areas

Internal Combustion Engines, Fluid Dynamics and Thermodynamics, Power Engineering

Education

1999B.Sc. Physics, Faculty of Mathematics and Physics, University of Ljubljana (UL)
2001M.Sc. Mechanical Engineering, Faculty of Mechanical Engineering, UL
2004Ph.DMechanical Engineering, Faculty of Mechanical Engineering, UL

Experience

1998-1999Undergraduate researcher at the Department of Solid state physics, Jožef Štefan Institute
1999-2003Researcher, Laboratory for Internal Combustion Engines (LICE), Faculty of Mechanical Engineering (FME), UL
2003-2004Young Researcher, LICE, FME, UL
2003-2006Assistant for the field Power Engineering, FME, UL
2004-2006Senior Researcher Assistant, LICE, FME, UL
2006-2011Assistant Professor for the field Power Engineering, FME, UL
2006-2009Researcher Associate, LICE, FME, UL
2008-present external expert for software development in AVL GmbH, Graz, Austria
2009-present head Laboratory for Internal Combustion Engines
2011-present Associate Professor for the field of Power Engineering, FME, UL

Academic Achievement

2004 Siegfried Marcus international award of the ÖIAV, Austria (Österreichischer Ingenieur- und Architekten-Verein) for the best PhD thesis related to the vehicles
2004 Award of the Faculty of Mechanical Engineering, UL for the excellence in dissemination of the research achievements
2005 Scholarship of the World Federation Of Scientists, 12 months
2006 Award of the Faculty of Mechanical Engineering, UL for the publication excellence
2007 Bronze Award for Innovation. The Chamber of Commerce of Slovenia

Publications: Journals

[1]  SELJAK, Tine, RODMAN OPREŠNIK, Samuel, KUNAVER, Matjaž, KATRAŠNIK, Tomaž. Wood, liquefied in polyhydroxy alcohols as a fuel for gas turbines. Appl. energy., 2012, 99, 40-49.
[2]  KATRAŠNIK, Tomaž, TRENC, Ferdinand. Innovative approach to air management strategy for turbocharged diesel aircraft engines. Proc. Inst. Mech. Eng., G J. aerosp. eng., 2012, 226, 8, 966-979.
[3]  RODMAN OPREŠNIK, Samuel, SELJAK, Tine, BIZJAN, Frančišek, KATRAŠNIK, Tomaž. Exhaust emissions and fuel consumption of a triple-fuel spark-ignition engine powered passenger car. Transp. res., Part D Transp. environ., 2012, 17, 3, 221-227.
[4]  KATRAŠNIK, Tomaž. Energy conversion phenomena in plug-in hybrid-electric vehicles. Energy convers. manage., Jul. 2011, 52, 7, 2637-2650.
[5]  SEKAVČNIK, Mihael, OGOREVC, Tine, KATRAŠNIK, Tomaž, RODMAN OPREŠNIK, Samuel. Three-dimensional approach to exhaust gas energy analysis. Heat mass transf., 2011, 48, 6, 923-931.
[6]  TAVČAR, Gregor, BIZJAN, Frančišek, KATRAŠNIK, Tomaž. Methods for improving transient response of diesel engines - influences of different electrically assisted turbocharging topologies. Proc. Inst. Mech. Eng., D J. automob. eng., Sep. 2011, 225, 9, 1167-1-1167-16.
[7]  KATRAŠNIK, Tomaž. Analytical method to evaluate fuel consumption of hybrid electric vehicles at balanced energy content of the electric storage devices. Appl. energy., Nov. 2010, 87, 11, 3330-3339.
[8]  KATRAŠNIK, Tomaž. Fuel economy of hybrid electric heavy-duty vehicles. Journal of Mechanical Engineering, 2010, 56, 12, 791-802.
[9]  KATRAŠNIK, Tomaž. Analytical framework for analyzing the energy conversion efficiency of different hybrid electric vehicle topologies. Energy convers. manage., 2009, 50, 8, 1924-1938.
[10]  BANJAC, Titina, TRENC, Ferdinand, KATRAŠNIK, Tomaž. Energy conversion efficiency of hybrid electric heavy-duty vehicles operating according to diverse drive cycles. Energy convers. manage., 2009, 50, 12, 2865-2878.
[11]  OGOREVC, Tine, SEKAVČNIK, Mihael, KATRAŠNIK, Tomaž, ŽUN, Iztok. Three-dimensional numerical simulation of the exhaust stroke of a single-cylinder four-stroke ICE. Forsch. Ing.wes., Sep. 2009, 73, 3, 147-160.
[12]  PRAH, Ivo, KATRAŠNIK, Tomaž. Application of optimization techniques to determine parameters of the Vibe combustion model. Journal of Mechanical Engineering, 2009, 55, 11, 715-726.
[13]  KATRAŠNIK, Tomaž. Hybridization of powertrain and downsizing of IC engine : a way to reduce fuel consumption and pollutant emissions : Part 1. Energy convers. manage., 2007, 48, 5, 1411-1423.
[14]  KATRAŠNIK, Tomaž. Hybridization of powertrain and downsizing of IC engine : analysis and parametric study : Part 2. Energy convers. manage., 2007, 48, 5, 1424-1434.
[15]  KATRAŠNIK, Tomaž, TRENC, Ferdinand, RODMAN OPREŠNIK, Samuel. Analysis of energy conversion efficiency in parallel and series hybrid powertrains. IEEE trans. veh. technol., 2007, 56, 6, 3649-3659.
[16]  KATRAŠNIK, Tomaž. Modelling of the twin-entry turbocharger turbine. Proc. Inst. Mech. Eng., D J. automob. eng., 2007, 221, 4, 481-496.
[17]  KATRAŠNIK, Tomaž, TRENC, Ferdinand, RODMAN OPREŠNIK, Samuel. Study of the energy-conversion efficiency of hybrid powertrains. Journal of Mechanical Engineering, 2007, 53, 10, 667-682.
[18]  KATRAŠNIK, Tomaž. Improved model to determine turbine and compressor boundary conditions with the method of characteristics. Int. j. mech. sci., 2006, 48, 5, 504-516.
[19]  KATRAŠNIK, Tomaž, TRENC, Ferdinand, RODMAN OPREŠNIK, Samuel. A new criterion to determine the start of combustion in diesel engines. J. eng. gas turbine power, October 2006, 128, 4, 928-933.
[20]  KATRAŠNIK, Tomaž. A novel algorithm for the simulation of an automotive turbocharger turbine. Journal of Mechanical Engineering, 2006, 52, 1, 15-25.
[21]  KATRAŠNIK, Tomaž, MEDICA, Vladimir, TRENC, Ferdinand. Analysis of the dynamic response improvement of a turbocharged diesel engine driven alternating current generating set. Energy convers. manage., 2005, 46, 18/19, 2838-2855.
[22]  KATRAŠNIK, Tomaž, TRENC, Ferdinand, MEDICA, Vladimir, MARKIČ, Stojan. An analysis of turbocharged diesel engine dynamic response improvement by electric assisting systems. J. eng. gas turbine power, October 2005, 127, 4, 918-926.
[23]  RODMAN OPREŠNIK, Samuel, PRIJATELJ, Sašo, KATRAŠNIK, Tomaž, TRENC, Ferdinand, BIZJAN, Frančišek. Analysis of the in-cylinder flow structures generated by the engine induction system - a comparison of experimental and simulated data. Journal of Mechanical Engineering, 2005, 51, 12, 744-756.
[24]  KATRAŠNIK, Tomaž. Analysis of the dynamic response improvement of turbocharged diesel engine driven A.C. generating sets using electric assisting systems. MECCA (Praha), 2005, 3, 2+3, T-1 - T-14.
[25]  KATRAŠNIK, Tomaž, TRENC, Ferdinand, MEDICA, Vladimir, RODMAN OPREŠNIK, Samuel, BIZJAN, Frančišek. Improving the transient response of a turbocharged diesel engine by using electrical assisting systems. Journal of Mechanical Engineering, 2004, 50, 2, 129-140.
[26]  KATRAŠNIK, Tomaž, RODMAN OPREŠNIK, Samuel, TRENC, Ferdinand, HRIBERNIK, Aleš, MEDICA, Vladimir. Improvement of the dynamic characteriatic of an automotive engine by a turbocharger assisted by an electric motor. J. eng. gas turbine power, Apr. 2003, 125, 2, 590-595.
[27]  KATRAŠNIK, Tomaž, RODMAN OPREŠNIK, Samuel, ŠIROK, Brane, TRENC, Ferdinand. Der Einfluss der Auspuffleitungskühlung auf die Leistung und die Emissionen der aufgeladenen Dieselmotoren. ÖIAZ, 2003, 148, 1, 18-21.
[28]  KATRAŠNIK, Tomaž, MARKIČ, Stojan, TRENC, Ferdinand, MEDICA, Vladimir. Influence of the electric assisting systems on a transient response improvement of a turbocharged Diesel engine propelling a truck. ÖIAZ, 2003, 148, 3, 66-73.
[29]  BONČA, Janez, KATRAŠNIK, Tomaž, TRUGMAN, S. A. Mobile bipolaron. Phys. rev. lett., 2000, 84, 3153-3156.

Publications: Conferences/Workshops/Symposiums

[1]  KRAMMER, Johann, WURZENBERGER, Johann C., BARDUBITZKI, Sophie, KATRAŠNIK, Tomaž. Concept design of hybrid power trains by means of physical based simulation models. JSAE Annual Congress, Pacifico Yokohama, 23-25 May 2012. Proceedings. [S. l.]: Society of Automotive Engineers of Japan, 2012, [1-4].
[2]  WURZENBERGER, Johann C., PRAH, Ivo, TOMINC, Primož, KATRAŠNIK, Tomaž. Optimization of hybrid power trains-physical based modeling for concept design. SAE 2012 World Congress & Exhibition, April 2012, Detroit, MI, USA.
[3]  KATRAŠNIK, Tomaž, WURZENBERGER, Johann C. Development of advanced conventional and hybrid powertrains by machanistic system level simulations. Transport Research Arena - Europe 2012, TRA Conference : Athens, Greece, April 23-26 2012, (Procedia: social & behavioral sciences, vol. 48). Athens: TRA, 2012, 2012, 48, 3371-3388.
[4]  KUNAVER, Matjaž, JASIUKAITYTE, Edita, ČUK, Nataša, KATRAŠNIK, Tomaž, RODMAN OPREŠNIK, Samuel, SELJAK, Tine. Biomass waste - an energy source. 4th International Congress on Energy and Environment Engineering and Management, Mérida, Spain, 25-27 May 2011 : IVCIIEM 2011. Mérida: School of Industrial Engineering of the Extremadura University, 2011.
[5]  WURZENBERGER, Johann C., BARDUBITZKI, Sophie, HEINZLE, Roman, KATRAŠNIK, Tomaž. Physical based real time system simulation : model and application workflow. The automobile in the second decade : sharing all energy solutions : final programme and exhibition catalogue. València: Universitat Politècnica, 2011.
[6]  KATRAŠNIK, Tomaž, WURZENBERGER, Johann C. Optimization of hybrid power trains by mechanistic system simulations. International scientific conference on hybrid and electric vehicles RHEVE 2011. Ruel-Malmaison: IFP Energies nouvelles, 2011, 1-8.
[7]  WURZENBERGER, Johann C., BARDUBITZKI, Sophie, BARTSCH, Peter, KATRAŠNIK, Tomaž. Real time capable pollutant formation and exhaust aftertreatment modeling-HSDI diesel engine simulation. Modeling of SI and Diesel Engines, April 12-14, 2011, Detroit, Michigan, (SP, 2314). Warrendale: Society of Automotive Engineers, 2011.
[8]  KRAMMER, Johann, WURZENBERGER, Johann C., BARDUBITZKI, Sophie, KATRAŠNIK, Tomaž. Real time capable, system level simulation with integrated pollutant formation and exhaust aftertreatment modelling. JSAE Annual Congress, Pacifico Yokohama, 18-20 May 2011. Proceedings. [S. l.]: Society of Automotive Engineers of Japan, 2011.
[9]  KUNAVER, Matjaž, JASIUKAITYTE, Edita, ČUK, Nataša, MEDVED, Sergej, RODMAN OPREŠNIK, Samuel, KATRAŠNIK, Tomaž. Biomass waste - a source of raw materials and new energy source. World Renewable Energy Congress 2011 - Sweden, Linköping 8-13 May 2011. Linköping: University, 2011.
[10]  WURZENBERGER, Johann C., BARTSCH, Peter, KATRAŠNIK, Tomaž. Real time capable system simulation : a fully integrated engine gas path and vehicle model. Diesel engines : facing the competitiveness challenges = face au défi de la compétitivite : international conference and exposition, 26-27 May 2010, Rouen, France, SIA, 2010.
[11]  KATRAŠNIK, Tomaž, WURZENBERGER, Johann C. Application of crank-angle resolved real-time engine simulation to model drive cycle performance. Energy and the environment 2010: international congress. Rijeka, 2010, 231-240.
[12]  KATRAŠNIK, Tomaž, WURZENBERGER, Johann C. Development of future powertrains by simulation tools. Transport Research Arena, Europe 2010, Brussels, Belgium, June 7-10, 2010. Greener, safer and smarter road transport for Europe : proceedings. Brussels.
[13]  WURZENBERGER, Johann C., BARTSCH, Peter, KATRAŠNIK, Tomaž. Crank-angle resolved real-time capable engine and vehicle simulation - fuel consumption and driving performance. TILLOCK, Brad R. (ur.). Modeling of SI and diesel engines, 2010, (SP, 2281). Warrendale: SAE International, 2010.
[14]  KRAMMER, Johann, WURZENBERGER, Johann C., BARTSCH, Peter, KATRAŠNIK, Tomaž. Crank-angle resolved real-time engine models for office applications. JSAE Annual Congress, Pacifico Yokohama, 18-20 May 2010. Proceedings. [S. l.]: Society of Automotive Engineers of Japan, 2010.
[15]  WURZENBERGER, Johann C., KATRAŠNIK, Tomaž. Crank-angle resolved real-time engine simulation - integrated simulation tool chain from office to testbed. Electronic engine controls, 2009, (SP, 2248). Warrendale, PA: SAE International, 2009.
[16]  KATRAŠNIK, Tomaž. Energy conversion efficiency of parallel and series hybrid electric heavy-duty vehicles. 12th European Automotive Congress, Bratislava, Slovakia, June 29-1 July, 2009. Europe in the second century of auto-mobility : congress proceedings. Bratislava.
[17]  KATRAŠNIK, Tomaž. Energy conversion efficiency of hybrid electric heavy-duty vehicles. SAE 2009. Warrendale: SAE International, 2009.
[18]  KATRAŠNIK, Tomaž. Fuel economy of hybrid electric heavy-duty vehicles. 9th conference and exhibition Innovative Automotive Technology IAT'09, Nova Gorica, Slovenija, 23.-24. april 2009.
[19]  KATRAŠNIK, Tomaž, TRENC, Ferdinand, RODMAN OPREŠNIK, Samuel, IVANJKO, Štefan. Medium term projection of energy consumption and transport activity in Slovenia. Automotive engineering for improved safety : proceedings, (SP, 0901). Belgrade: Yugoslav Society of Automotive Engineers, 2009.
[20]  KATRAŠNIK, Tomaž. Energy conversion in hybrid powertrains. Energy and the environment 2008: international congress, Opatija, Croatia, October 22-24, 2008.
[21]  KATRAŠNIK, Tomaž, TRENC, Ferdinand, RODMAN OPREŠNIK, Samuel. Energy conversion efficiency of parallel and series hybrid powertrains. XXI International Conference with Exibition Science and Motor Vehicles, Beograd, 23-24 April 2007. Automotive Engineering for Improved Safety : proceedings.
[22]  KATRAŠNIK, Tomaž. Analysis of fuel consumption reduction due to powertrain hybridization and downsizing of ICE. 2006 SAE Powertrain [and] Fluid Systems, Conference and Exhibition, Toronto, Canada, October 16-19, 2006. Proceedings. [S. l.].
[23]  KATRAŠNIK, Tomaž, RODMAN OPREŠNIK, Samuel, TRENC, Ferdinand, MEDICA, Vladimir. Parametric study on dynamic response improvement of a turbocharged diesel engine by electric assist system. 10th EAEC European Automotive Congress in association with the 20th International Conference "Science and Motor Vehicles 2005", Beograd, Serbia & Montenegro, 30th May - 1 June, 2005.
[24]  KATRAŠNIK, Tomaž. Analysis of the dynamic response improvement of turbocharged diesel engine driven A.C. generating sets using electric assisting systems. Conference on Transient Processes in Internal Combustion Engines and Automotive Powertrains, Prague, Czech Republic, September 14, 2005. Transients 2005.
[25]  KATRAŠNIK, Tomaž, RODMAN OPREŠNIK, Samuel, TRENC, Ferdinand, ŠKIFIĆ, Nedeljko. A new criterion to determine the start of combustion in diesel engine. 2004 Fall Technical Conference of the ASME Internal Combustion Engine Division, October 24-26, 2004, Long Beach, California, USA. ICEF2004. [s.l.]: ASME, 2004, ICF2004-830.
[26]  KATRAŠNIK, Tomaž, TRENC, Ferdinand, RODMAN OPREŠNIK, Samuel, HRIBERNIK, Aleš, MEDICA, Vladimir. Improvement of the dynamic characteristic of an automotive engine by a turbocharger assisted by an electric motor. Proceedings of the 2001 Fall Technical Conference of the ASME Internal Combustion Engine Division : Argonne, Illinois, September 23-26, 2001, (ICE, vol. 37). New York, NY: American Society of Mechanical Engineers, cop. 2001.

Publications: Books/Book Chapters

[1]  KATRAŠNIK, Tomaž. On the fuel economy of hybrid-electric powertrains. V: RAINES, Gerald B. (ur.). Electric vehicles : technology, research and development. New York: Nova Science Publishers, cop. 2009, 105-161.
[2]  KATRAŠNIK, Tomaž. Energy conversion efficiency in hybrid-electric powertrains. V: LÍN, Wenzhong (ur.). Energy conversion : new research. New York: Nova science publishers, cop. 2008, 89-145.