prof. Ing. Miroslav Raudenský, CSc.

E-mail:   raudensky@fme.vutbr.cz 
Dept.:   Heat Transfer and Fluid Flow Laboratory
Position:   Professor
Room:   D3/208
Phone:   +420 54114 3274
Dept.:   Division of Energy, Processes and Ecology
Position:   Professor
Room:   D3/208
Phone:   +420 54114 3274

1769

Education and academic qualification

  • In 1981, he graduated from the Faculty of Mechanical Engineering of the Technical University of Brno, specialization Automated control systems of engineering processes. After a one-year job at the Research Institute of Energetic Devices, he started his internal postgraduate studies at the Department of Thermodynamics and Nuclear Energy of the Faculty Mechanical Engineering of the Technical University of Brno. Since 1983, he was employed at the FME TU Brno as a specialized assistant. He finished his postgraduate course by defending his dissertation work, Applying the cubic spline method for solving the direct or inverse heat transfer tasks. In 1992, he was awarded the scientific certificate IIa. Since 1994, he has been in a position of a research and development worker in the Heat Transfer and Fluid Flow laboratory of the Institute of Aerospace Engineering of the Faculty of Mechanical Engineering. In 1995, he finished his senior lectureship and was awarded the title associate professor. Professional attention, during the last five years, on new methods of inverse task solving and experimental research of cooling with application, especially, for rolling and continuous casting.
  • Author of over hundred papers in journals and at conferences (full list of publications can be found at www.heatlab.cz).
  • During the last five years, he was responsible for dealing with research projects for domestic and foreign industrial companies of a financial value of 800.000 €.
  • He was coordinator of 8 academic projects (e.g. supported by the Czech Grant Agency and COST) in the past ten years.

Supervised courses:

Publications:

  • RAUDENSKÝ, M.; ASTROUSKI, I.; DOHNAL, M.:
    Intensification of heat transfer of polymeric hollow fiber heat exchangers by chaotisation,
    Applied Thermal Engineering, pp.632-638, ISSN 1359-4311, Elsevier Limited
    journal article
  • TSENG, A.; RAUDENSKÝ, M.; LEE, T-W.:
    Liquid Sprays for Heat Transfer Enhancements: A Review,
    Heat Transfer Engineering, Vol.37, (2016), No.16, pp.1-60, ISSN 0145-7632, TAYLOR & FRANCIS INC
    journal article
  • POHANKA, M.; RAUDENSKÝ, M.; HWANG, J., Y.; YOU, J., W.; LEE, S. H.; :
    Mutual collision of water jets from adjacent high pressure flat jet nozzles on flat surfaces during hydraulic descaling,
    TEHNIČKI VJESNIK - TECHNICAL GAZETTE, Vol.23, (2016), No.5, pp.1389-1394, ISSN 1330-3651, Technical faculties of the Josip Juraj Strossmayer University of Osijek
    journal article
  • BROŽOVÁ, T.; RAUDENSKÝ, M.:
    Determination of the Surface Wettability of Polymeric Hollow Fibres,
    24th INTERNATIONAL CONFERENCE ON MATERIALSAND TECHNOLOGY, pp.47-47, ISBN 978-961-94088-0-3, (2016), Inštitut za kovinske materiale in tehnologije
    abstract
  • RAUDENSKÝ, M.; ASTROUSKI, I.; BROŽOVÁ, T.:
    Polymeric hollow fiber heat exchangers,
    Heat Transfer XIV Simulation and Experiments in Heat Transfer and its Applications, pp.95-105, ISBN 978-1-78466-109-0, (2016), Wessex Institute
    conference paper
    akce: 14th International Conference on Simulation and Experiments in Heat Transfer and its Applications (Heat Transfer XIV), Ancona, 07.09.2016-09.09.2016
  • RAUDENSKÝ, M.; TSENG, A. A.; HORSKÝ, J.; KOMÍNEK, J.:
    Recent developments of water and mist spray cooling in continuous casting of steels,
    Metallurgical Research and Technology, Vol.113, (2016), No.5, pp.1-24, ISSN 2271-3654
    journal article
  • KRÁSNÝ, I.; ASTROUSKI, I.; RAUDENSKÝ, M.:
    Polymeric Hollow Fiber Heat Exchanger as an Automotive Radiator,
    Applied Thermal Engineering, pp.798-803, ISSN 1359-4311, Elsevier
    journal article
  • RAUDENSKÝ, M.; ASTROUSKI, I.; BROŽOVÁ, T.; BARTULI, E.:
    Flexible Polymeric Hollow Fiber Heat Exchangers for Electronic Systems,
    Thermal and Thermomechanical Phenomena in Electronic Systems ITherm 2016 , pp.1143-1147, ISBN 978-1-4799-5266-3, (2016), IEEE
    conference paper
    akce: 2016 15th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (ITherm), Las Vegas, NV USA, 31.05.2016-03.06.2016
  • RAUDENSKÝ, M.; HORSKÝ, J.; HRABOVSKÝ, J.; KOTRBÁČEK, P.; POHANKA, M.:
    Mechanical Properties of Oxidized Steel Samples by Small Punch Test,
    Hutnické listy, Vol.69, (2016), No.2, pp.10-16, ISSN 0018-8069, Ocelot s.r.o
    journal article
  • SCHMIDT, M.; ASTROUSKI, I.; REPPICH, M.; RAUDENSKÝ, M.:
    Solar Panel Cooling System with Hollow Fibres,
    Applied Solar Energy (English translation of Geliotekhnika), Vol.52, (2016), No.2, pp.86-92, ISSN 0003-701X, Allerton Press, Inc.
    journal article
  • CHABIČOVSKÝ, M.; HORSKÝ, J.; RAUDENSKÝ, M.; HNÍZDIL, M.; KOTRBÁČEK, P.:
    Design of quenching units for heat treatment of tubes,
    La Metallurgia Italiana, Vol.2016, (2016), No.1, pp.23-28, ISSN 0026-0843, Associazione Italiana di Metallurgia
    journal article
  • POHANKA, M.; RAUDENSKÝ, M.:
    Study of impact pressure of high pressure flat jet nozzles
  • ASTROUSKI, I.; RAUDENSKÝ, M.; DOHNAL, M.:
    Fouling of Polymeric Hollow Fiber Heat Exchanger by Wastewater,
    Proceedings of the 18th International Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction (PRES 2015), pp.949-954, ISBN 978-88-95608-36-5, (2015), Italian Association of Chemical Engineering - AIDIC
    conference paper
    akce: 18th International Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction (PRES’15), Kuching, 23.08.2015-27.08.2015
  • CHABIČOVSKÝ, M.; HNÍZDIL, M.; TSENG, A.; RAUDENSKÝ, M.:
    Effects of oxide layer on Leidenfrost temperature during spray cooling of steel at high temperatures,
    International journal of heat and mass transfer, pp.236-246, ISSN 0017-9310, Elseviere
    journal article
  • CHABIČOVSKÝ, M.; HORSKÝ, J.; RAUDENSKÝ, M.; HNÍZDIL, M.; KOTRBÁČEK, P.:
    DESIGN OF QUENCHING UNITS FOR HEAT TREATMENT OF TUBES,
    European conference on Heat treatment 2015 a 22nd IFHTSE congres, pp.1-9, ISBN 978-88-98990-03-0, (2015), Associazione Italiana di metallurgia
    conference paper
    akce: European conference on Heat treatment 2015 a 22nd IFHTSE congres, Venice, 20.05.2015-22.06.2015
  • STRÁNSKÝ, M.; BROŽOVÁ, T.; RAUDENSKÝ, M.; HNÍZDIL, M.; TUROŇ, R.:
    Effect of Various Spray Cooling Configurations on Hardness Profile of Tubes,
    METAL 2015 24th International Conference on Metallurgy and Materials, pp.1-6, ISBN 978-80-87294-58-1, (2015), Tanger Ltd Ostrava
    conference paper
    akce: METAL 2015 24th International Conference on Metallurgy and Materials, Brno, 03.06.2015-05.06.2015
  • BROŽOVÁ, T.; LUKS, T.; ASTROUSKI, I.; RAUDENSKÝ, M.:
    Fatigue Testing of Polymeric Hollow Fibre Heat Transfer Surfaces by Pulsating Pressure Loads,
    ENGINEERING MECHANICS 2015 21st International Conference Engineering Mechanics 2015, pp.30-31, ISBN 978-80-86246-42-0, (2015), Institute of Theoretical and Applied Mechanics
    conference paper
    akce: Engineering Mechanics 2015, Svratka, 11.05.2015-14.05.2015
  • RAUDENSKÝ, M.; ASTROUSKI, I.; REPPICH, M.;SCHMIDT, M.:
    SOLAR PANEL COOLING SYSTEM WITH HOLLOW FIBRES,
    SASEC 2015, pp.316-320, ISBN 978-1-77592-109-7, (2015), SASEC2015/University of Pretoria
    conference paper
    akce: SASEC 2015, Skukuza, Kruger National Park, 11.05.2015-13.05.2015
  • HNÍZDIL, M.; CHABIČOVSKÝ, M.; RAUDENSKÝ, M.:
    Influence of the impact angle and pressure on the spray cooling of vertically moving hot steel surfaces,
    Materiali in tehnologije, Vol.49, (2015), No.3, pp.333-336, ISSN 1580-2949, Insitute of Metals and Technology, Ljubljana, Slovenia
    journal article
  • CHABIČOVSKÝ, M.; RAUDENSKÝ, M.:
    Techniques of measuring spray-cooling homogeneity,
    Materiali in tehnologije, Vol.49, (2015), No.3, pp.337-341, ISSN 1580-2949, Insitute of Metals and Technology, Ljubljana, Slovenia
    journal article
  • HORSKÝ, J.; RAUDENSKÝ, M.; MORAVEC, R,; BLAZEK, K,:
    Heat transfer coefficients for the secondary cooling zones in a continuous casting with the effect of steel chemistry ,
    OCELAŘI 2015, pp.59-66, ISBN 978-80-87294-56-7, (2015), Tanger spol. s.r.o.
    conference paper
    akce: Oceláři 2015, Rožnov pod Radhoštěm, 09.04.2015-10.04.2015
  • HŘIBOVÁ, V.; KOMÍNEK, J.; RAUDENSKÝ, M.:
    Vliv teploty a koncentrace polymerních roztoků na intenzitu chlazení při tepelném zpracování,
    Hutnické listy, Vol.68, (2015), No.1, pp.10-15, ISSN 0018-8069, Ocelot s.r.o
    journal article
  • TSENG, A.; RAUDENSKÝ, M.:
    Assessments of technology transfer activities of US universities and associated impact of Bayh–Dole Act,
    SCIENTOMETRICS, Vol.101, (2014), No.3, pp.1851-1869, ISSN 0138-9130, Springer Netherlands
    journal article
  • TSENG, A.; RAUDENSKÝ, M.:
    Recent trends of technology transfer in US universities with comparison to those following Bayh-Dole Act,
    International Journal of Technology Transfer and Commercialisation, Vol.12, (2014), No.1/2/3, pp.139-156, ISSN 1470-6075, Inderscience Enterprises Ltd.
    journal article
  • HNÍZDIL, M.; CHABIČOVSKÝ, M.; RAUDENSKÝ, M.; MAGADOUX, E.; CODE, F.:
    Spray Cooling Unit for Heat Treatment of Stainless Steel Sheets,
    Advanced Materials Research, Vol.936, (2014), No.1, pp.1720-1724, ISSN 1022-6680, Trans Tech Publications
    journal article
  • RAUDENSKÝ, M.; CHABIČOVSKÝ, M.; HRABOVSKÝ, J.:
    IMPACT OF OXIDE SCALE ON HEAT TREATMENT OF STEELS,
    METAL 2014, 23rd International Conference on Metallurgy and Materials, Conference Proceedings, pp.553-558, ISBN 978-80-87294-54-3, (2014), Tanger Ltd.
    conference paper
    akce: METAL 2014: 23nd International Conference on Metallurgy and Materials, Brno, 21.05.2014-23.05.2014
  • ASTROUSKI, I.; RAUDENSKÝ, M.:
    PLASTIC HEAT EXCHANGER USING TWISTED HOLLOW FIBERS,
    Engineering Mechanics 2014, 20th International Conference, May 12-15, 2014, Svratka, Czech Republic, pp.56-60, ISBN 978-80-214-4871-1, (2014), Institute of Solid Mechanics, Mechatronics and Biomechanics, Faculty of Mechanical Engineering, Brno University of Technology
    conference paper
    akce: Engineering Mechanics 2014, Svratka, 12.05.2014-15.05.2014
  • TSENG, A.; RAUDENSKÝ, M.:
    Performance Evaluations of Technology Transfer Offices of Major US Research Universities,
    Journal of Technology Management and Innovation, Vol.9, (2014), No.1, pp.93-102, ISSN 0718-2724, Universidad Alberto Hurtado
    journal article
  • ZAHRADNÍK, R.; RAUDENSKÝ, M.; HRABOVSKÝ, J.:
    Study of the work roll cooling in hot rolling process with regard on service life,
    La Metallurgia Italiana, Vol.2014, (2014), No.4, pp.21-28, ISSN 0026-0843, Associazione Italiana di Metallurgia
    journal article
  • TSENG, A.; BELLEROVÁ, H.; POHANKA, M.; RAUDENSKÝ, M.:
    Effects of titania nanoparticles on heat transfer performance of spray cooling with full cone nozzle,
    Applied Thermal Engineering, Vol.62, (2014), No.1, pp.20-27, ISSN 1359-4311, Elsevier Ltd.
    journal article
  • RAUDENSKÝ, M.; HORSKÝ, J.; LEE, P.:
    Development of accelerated cooling for new plate mill,
    Ironmaking and Steelmaking, Vol.40, (2013), No.8, pp.598-604, ISSN 0301-9233, Maney Publishing
    journal article
  • TSENG, A.; RAUDENSKÝ, M.; LI, B.:
    IMPINGEMENT FLUX UNIFORMITY IN NOZZLE SPRAYING FOR INDUSTRIAL APPLICATIONS,
    Atomization and sprays, Vol.23, (2013), No.9, pp.819-840, ISSN 1044-5110, Begell House
    journal article

List of publications at Portal BUT

Abstracts of most important papers:

  • RAUDENSKÝ, M.; ASTROUSKI, I.; DOHNAL, M.:
    Intensification of heat transfer of polymeric hollow fiber heat exchangers by chaotisation,
    Applied Thermal Engineering, pp.632-638, ISSN 1359-4311, Elsevier Limited
    journal article

    Flexible polymeric hollow fibers are used as heat transfer elements. A potted bundle of several hundred such fibers can be used as a heat exchanger in different ways. The simplest application is a submerged bundle. The fibers studied in this paper have outside diameters below 0.8 mm. Such very small-diameter polymer fibers significantly facilitate heat transfer. However, these potted sets of fibers must be designed to guarantee that all fibers are in direct contact with the surrounding stream of fluid. It is possible to use textile technologies to keep fibers strictly parallel and separated. However, a parallel arrangement can be expensive and is not flexible. A low-cost variant utilizes bundle chaotisation, which means that each fiber has a unique shape. The consequence is that their mutual mechanical contacts are point-wise. Several methods of chaotisation are studied in this paper. The best variant is a permanent fiber deformation/chaotisation of fibers using integrated heating/cooling and stretching. The tested CFPFHEs (Chaotised Flexible Polymeric Fiber Heat Exchangers) had an overall heat transfer area of 1 m2, and its length was approximately 700 mm. It achieved a water/air overall heat transfer coefficient of 100 W/m2 K with an outside air flow of 2 m/s.
  • TSENG, A.; RAUDENSKÝ, M.; LEE, T-W.:
    Liquid Sprays for Heat Transfer Enhancements: A Review,
    Heat Transfer Engineering, Vol.37, (2016), No.16, pp.1-60, ISSN 0145-7632, TAYLOR & FRANCIS INC
    journal article

    Sprays used for enhanced heat transfer is reviewed, starting from the spray characteristics, measurement methods, spray dynamics, to spray heat transfer. Some results for spray heat transfer at large Reynolds numbers and surface boiling are also presented, including some recent results summarizing the effects of various injection parameters. It is recommended that basic principles of heat transfer be used to integrate various effects, such as coolant and surface temperatures, water and air flow rates, and injection conditions, into a concise form so that the results can be generalized and be applied to a large range of conditions.
  • RAUDENSKÝ, M.; TSENG, A. A.; HORSKÝ, J.; KOMÍNEK, J.:
    Recent developments of water and mist spray cooling in continuous casting of steels,
    Metallurgical Research and Technology, Vol.113, (2016), No.5, pp.1-24, ISSN 2271-3654
    journal article

    In continuous casting (CC) of steel, the water spray cooling system installed in the secondary cooling (SC) zone plays a critical role in controlling its productivity and product quality. In this paper, recent developments in spray cooling applied to the SC are reviewed and evaluated. After introducing the importance of CC in the metal industry and the significance of spray cooling in CC, the development of nozzles and cooling facilities as well as the fundamentals of spray cooling used in the SC zone are presented and discussed. The quantification of heat transfer performance of spray cooling in CC is then studied and the leading correlations developed for the heat transfer coefficient HTC related to major spray cooling parameters are selected and compared. The development of techniques for measuring the essential spray cooling parameters and HTC are also described and assessed. Finally, recommendations on future efforts for developing a better spray cooling system or correlation are provided.
  • KRÁSNÝ, I.; ASTROUSKI, I.; RAUDENSKÝ, M.:
    Polymeric Hollow Fiber Heat Exchanger as an Automotive Radiator,
    Applied Thermal Engineering, pp.798-803, ISSN 1359-4311, Elsevier
    journal article

    Nowadays, different automotive parts (tubing, covers, manifolds etc.) are made of plastics because of their superior characteristics, low weight, chemical resistance, reasonable price and several other aspects. Manufacturing technologies are already well-established and the application of plastics is proven. Following this trend, the production of compact and light all-plastic radiators seems reasonable. Two plastic heat exchangers were manufactured based on polypropylene tubes of diameter 0.6 and 0.8 mm (so-called fibers) and tested. The heat transfer performance and pressure drops were studied with hot (60 °C) ethyleneglycol-water brine flowing inside the fibers and air (20 °C) outside because these conditions are conventional for car radiator operation. It was observed that heat transfer rates (up to 10.2 kW), overall heat transfer coefficients (up to 335 W/m2K), and pressure drops are competitive to conventional aluminium finned-tube radiators. Moreover, influence of fiber diameter was studied. It was observed that air-side convective coefficients rise with a decrease of fiber diameter. Air-side pressure drops of plastic prototypes were slightly higher than of aluminium radiator but it is expected that additional optimisation will eliminate this drawback. Experimentally obtained air-side heat transfer coefficients were compared with the theoretical prediction using the Grimson equation and the Churchill and Bernstein approach. It was found that the Grimson equation is sufficient for approximate prediction of the outer HTCs and can be used for engineering calculations. Further work will concentrate on optimizing and developing a polymeric hollow fiber heat exchanger with reduced size, weight and optimized performance and pressure drops.
  • RAUDENSKÝ, M.; ASTROUSKI, I.; BROŽOVÁ, T.; BARTULI, E.:
    Flexible Polymeric Hollow Fiber Heat Exchangers for Electronic Systems,
    Thermal and Thermomechanical Phenomena in Electronic Systems ITherm 2016 , pp.1143-1147, ISBN 978-1-4799-5266-3, (2016), IEEE
    conference paper
    akce: 2016 15th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (ITherm), Las Vegas, NV USA, 31.05.2016-03.06.2016

    Cooling electronics boxes often requires extraction of high heat fluxes from closed boxes with many heat-producing components. The direct use of ventilation is sometimes limited by demands to use hermetic units or the need to extract heat from a specific place in a large and complicated system. A liquid system introduced inside of the electronic box can be used for this purpose. Unfortunately, metallic heat exchangers have a number of shortcomings in these applications, including significant weight as well as cost and space demands. Polymeric heat exchangers consisting of hollow fibers were proposed a decade ago and can be used as an alternative in such applications. Flexible polymeric hollow fiber heat exchangers were prepared and tested in liquid / air conditions. These heat exchangers use plastic capillaries with an outer diameter of 0.5 - 0.8 mm and a wall thickness of 10% of the outer diameter. They consist of flexible fibers and can be used in narrow slots and/or in shaped channels. These heat exchangers are effective even in natural convection applications because of their high heat transfer intensity on micro-objects. Experimentally obtained overall heat-transfer coefficients in water/air applications are up to 250 W/m2 K for forced convection and up to 80 W/m2 for natural convection. The use of plastic and non-corrosive materials is advantageous in electronic systems where high heat fluxes must be extracted safely from difficult to access spaces or from hermeticallysealed boxes.