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Ing. Zdeněk Trávníček, CSc.

Phone +420 266 053 302 E-mail tr@it.cas.cz Room M2507 Department D2 - Thermodynamics Position Deputy Head of Department, Head of Laboratory of Heat and Mass Transfer Research area Experimental fluid mechanics and heat/mass transfer. Passive/active control of thermal/flow fields. Forced convective heat/mass transfer enhancement. Impinging, pulsatile, and synthetic jets; wakes.
Curriculum vitae
Education and Appointments
since 2004   Head of Laboratory of Heat and Mass Transfer
since 1996   Institute of Thermomechanics, AS CR, v. v. i.
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 the Impinging Jets Laboratory
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
131 papers in various journals and conference proceedings, 20 of them are in „impacted journals”;
39 research reports, and two Patent Certificates granted from Taiwan R.O.C.

Citations: Number of citations recorded by ISI Web of Knowledge is 56.
View author's publications in the ASCR database
Selected publications
Representative journal papers
Z. Trávníček, V. Tesař, J. Kordík, Performance of synthetic jet actuators based on hybrid and double-acting principles. Journal of Visualization 11 (3) (2008) 221–229.

A. Fedorchenko, Z. Trávníček, A-B. Wang, On the effective temperature concept in the problem of laminar vortex shedding behind a heated circular cylinder. Physics of Fluids 19 (5) (2007) 051701-1 – 051701-3.

T. Vít, M. Ren, Z. Trávníček, F. Maršík, C.C.M. Rindt, The influence of temperature field on the Strouhal-Reynolds number relationship for water and air. Experimental Thermal and Fluid Science 31 (7) (2007) 751–760.

Z. Trávníček, T. Vít, V. Tesař, Hybrid synthetic jet as the non-zero-net-mass-flux jet, Physics of Fluids 18 (8) (2006) 081701-1 – 081701-4.

C. Herman, Z. Trávníček, Cool sound: The future of refrigeration? Thermodynamic and heat transfer issues in thermoacoustic refrigeration. Heat and Mass Transfer 42 (6)(2006) 492–500.

Z. Trávníček, V. Tesař, Annular impinging jet with recirculation zone expanded by acoustic excitation, Int. J. Heat Mass Transfer 47 (10) (2004) 2329–2341.

Z.Trávníček, K. Peszyński, J. Hošek, S. Wawrzyniak, Aerodynamic and mass transfer characteristics of an annular bistable impinging jet with a fluidic flip–flop control. Int. J. Heat Mass Transfer 46 (7) (2003) 1265–1278.

Z. Trávníček, V. Tesař, Annular synthetic jet used for impinging flow mass-transfer, Int. J. Heat Mass Transfer 46 (17) (2003) 3291–3297.

Z. Trávníček, F.  Maršík, Flow visualization and mass transfer with a bistable two-slot impinging jet. Journal of Visualization 6 (4) (2003) 337–441.

A-B. Wang, Z. Trávníček, K-C. Chia, On the relationship of effective Reynolds number and Strouhal number for the laminar vortex shedding of a heated circular cylinder. Physics of Fluids 12 (6) (2000) 1401–1410.

Refereed papers in recent conference proceedings
Z. Trávníček, V. Tesař, Synthetic jets used to control spreading of an annular impinging jet, in: Proceedings of the International Symposium on Flow Visualization, ISFV13/FLUVISU12, Nice, France, July 1–4, 2008, No. 107.

Z. Trávníček, V. Tesař, Hysteretic behavior of annular impinging jets, in: Proceedings of 5th European Thermal-Sciences Conference, Eindhoven, May 18–22, 2008, JET 6.

Z. Trávníček, V. Kopecký, F. Maršík, V. Tesař, Bifurcated and helical jet controlled by azimuthally arranged synthetic jets, in: Proceedings of 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics (HEFAT2007) July 1–4, 2007, Sun City, South Africa, TZ1.

Patents
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.

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, Y-H. Wang, M-C. Hsu, Double-acting device for generating of synthetic jets. Patent Appl. No. 10/894,613, Appl. Date July 20, 2004, US Patent and Trademark Office, Philadelphia, U.S.A.
Teaching
External lecturer of Experimental Fluid Mechanics (TU Liberec).
Supervisor of Ph.D. and M.Sc. students.
Projects
2009-2011 GA101/09/1959Passive and active flow control in channnels of centrifugal stage with forward curved blades
2008-2012 IAA200760801Pulsatile jets for control of flow fields
2005-2009 IAA200760504Temperature control of a bluff body wake
2005-2007 GA101/05/2681Heat/mass transfer of impinging pulsatile jets controlled by large coherent structures
1999-2001 GA101/99/0060Zvyšování transportních součinitelů konvektivních procesů využitím modulovaných tekutinových proudů

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