doc. Ing. Zdeněk Trávníček, CSc.


Department:  Department D 2 - Thermodynamics
Phone: +420 266 053 302
E-mail:
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2014              Associate Professor "Non-isothermal wakes and impinging jets"
since 2008   Deputy Head of Department of Thermodynamics
since 2004   Head of Laboratory of Heat and Mass Transfer
since 1996   Institute of Thermomechanics, CAS
1994              CSc.-degree (equivalent to Ph.D.) „Coanda effect used for impinging drying“
1985-1995   SVÚSS Prague-Běchovice (National Research Institute for Machine Design) as research assistant,
                       then researcher, finally the head of Laboratory of Impingement Drying
1985             Ing. (equivalent to M.Sc.), Czech Technical University (CTU) in Prague, Faculty of Mechanical Engineering

Stays abroad
2000–2001 Johns Hopkins University, Baltimore, USA (5 months)
1998–1999 and 2002–2003 National Taiwan University, Institute of Applied Mechanics, Taiwan R.O.C. (2 years)
1990             ITTF, Institute of Technical Thermophysics, National Academy of Sciences of Ukraine, Kiev, Ukraine
                      (2 months with Prof. E.P. Dyban)

Publications
more than 260 papers in various journals and conference proceedings, 49 of them are in „impacted journals”;
44 research reports, and 8 Patent Certificates granted from USA (2), Taiwan R.O.C. (2) and CR (4).

Citations: Number of citations recorded by ISI Web of Knowledge (without self-citations) is more than 370.

Selected publications

Representative journal papers

  • Z. Trávníček, Z. Broučková, Characterization of Impingement heat/mass transfer to the synthetic jet generated by a biomimetics actuator. Trans. ASME, J. Heat Transfer 141 (2019) 042203-1–042203-9.
  • Z. Trávníček, Z. Broučková, A synthetic jet issuing from a bio-inspired actuator with an oscillating nozzle lip. Trans. ASME, J. Fluids Eng. 140 (2018) 101104-1 – 101104-5.
  • Z. Trávníček, J. Kordík, Energetic efficiencies of synthetic jet actuators: Commentary of the article by Gil and Strzelczyk, Experimental Thermal and Fluid Science 98 (2018) 121–123.
  • J. Kordík, Z. Trávníček, Optimal diameter of nozzles of synthetic jet actuators based on electrodynamic transducers. Experimental Thermal and Fluid Science 86 (2017) 281–294.
  • J. Kordík, Z. Trávníček, V.Timchenko, N.A. Ismail, The predominant effect of stroke length on velocity profiles at the exit of axisymmetric synthetic jet actuators, International Journal of Heat and Fluid Flow 66 (2017) 197–208.
  • Z. Trávníček, Z. Broučková, J. Kordík, T.Vít, Visualization of synthetic jet formation in air. Journal of Visualization 18 (2015) 595–609.
  • Z. Trávníček, T. Vít, Impingement heat/mass transfer to hybrid synthetic jets and other reversible pulsating jets. Int. J. Heat Mass Transfer 85 (2015) 473–487.
  • Z. Trávníček, A.–B. Wang, W.–Y. Tu, Laminar vortex shedding behind a cooled circular cylinder. Exp. Fluids 55 (2014), 1679.
  • Z. Trávníček, Z. Broučková, J. Kordík, Formation criterion for synthetic jets at high Stokes numbers. AIAA J. 50 (2012) 2012–2017.
  • Z. Trávníček, L. Němcová, J. Kordík, V. Tesař, V. Kopecký, Axisymmetric impinging jet excited by a synthetic jet system. Int. J. Heat Mass Transfer 55 (2012) 1279–1290.

Refereed papers in recent conference proceedings

  • Z. Trávníček, Z. Broučková, Experimental study of a biomimetic synthetic jet actuator. 12th European Fluid Mechanics Conference, Vienna, Austria, EFMC12, Sept. 9–13, 2018.
  • Z. Broučková, Z. Trávníček, Natural convection from a pair of cylinders at controlled heating. In: World Conference Experimental Heat Transfer, Fluid Mechanics and Thermodynamics, (ExHFT-9,Brazil-Iguazu Falls) OC 101, June 12-15, 2017, Iguazu Falls, Brazil.

Patents

  • Z. Trávníček, Z. Broučková, Method and device for cooling of cylinder-shaped bodies by a cooling fluid jet. Patent No. 306506, Jan. 4, 2017.
  • A.-B. Wang, Z. Trávníček, Y.-H. Wang, M.-C. Hsu, Double-acting device for generating of synthetic jets. US Patent, No. US 7527086 B2, May 5, 2009.
  • A-.B. Wang, Z. Trávníček, Y.-H. Wang, M.-C. Hsu, Double-acting device for generating of synthetic jets. Patent Certificate of Taiwan R.O.C. No. I 267 616, 2006/12/01, valid period 2006–2024.
  • A.-B.Wang, Z.Trávníček, C.-H.Lee, Y.-H.Wang, M.-C.Hsu, C.-K.Lee, A.I.Fedorchenko, Micromixer apparatus and method therefor. Patent Certificate of Taiwan R.O.C. No. I 249 431, 2006/02/21, valid period 2006–2025.

Researcher ID: G-7108-2014

Teaching

External lecturer of Experimental Fluid Mechanics (TU Liberec).
Supervisor of Ph.D. and M.Sc. students.

Grants

2016–2018GA16-16596SOptimalizace generování pulzujících proudů v mechanice tekutin
2014–201614-08888SŘízení proudových polí pomocí oscilací tekutiny
2011–2013GCP101/11/J019Termoakustický motor
2009–2011GA101/09/1959Pasivní a aktivní řízení proudu v kanálech odstředivého stupně s dopředu zahnutými lopatkami
2008–2012IAA200760801Pulzující proudy pro rízení proudových polí
2005–2009IAA200760504Teplotní řízení úplavu za špatně obtékaným tělesem
2005–2007GA101/05/2681Přenos tepla a hmoty z impaktních pulzujících proudů, které jsou řízeny pomocí velkých koherentních struktur
1999–2001GA101/99/0060Zvyšování transportních součinitelů konvektivních procesů využitím modulovaných tekutinových proudů