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Ing.
Ph.D.
FSI, ÚADI OPJ – odborný asistent
Jiri.Vacula@vutbr.cz
Odeslat VUT zprávu
2026
VACULA, J.; NOVOTNÝ, P.; TAKÁCS, R.; PESTHY, M.; PRINSIER, J. Aerodynamic Effect of Shallow Circumferential Grooves in the Shroud of a Centrifugal Compressor. Journal of Turbomachinery, 2026, vol. 1, iss. 148, p. 1-11.
Článek WoS
NOVOTNÝ, P.; VACULA, J.; KOCMAN, F.; KRMÍČEK, A.; ŠKARA, P. Towards Low-vibration and Reliable Ball-Bearing Turbochargers. KOKA 2026 — Proceedings of the international scientific conference. Praha: Department of Automotive, Combustion Engine and Railway Engineering, Faculty of Mechanical Engineering, Czech Technical University in Prague, 2026. p. 82.ISBN: 978-80-01-07580-7.
Stať ve sborníku mimo WoS a Scopus
VACULA, J.; NOVOTNÝ, P.; KOCMAN, F.; KRMÍČEK, A. Aerodynamic Treatment for Axial Force Reduction in a Radial Compressor. KOKA 2026 — Proceedings of the international scientific conference. Praha: Department of Automotive, Combustion Engine and Railway Engineering, Faculty of Mechanical Engineering, Czech Technical University in Prague, 2026. p. 115.ISBN: 978-80-01-07580-7.
2025
KOCMAN, F.; NOVOTNÝ, P.; VACULA, J.; KRMÍČEK, A. Algorithm for turbocharger noise source recognition with speed identification from acoustic emission. Brno: MENDELU, Faculty of AgriSciences, Department of Technology and Automobile Transport, 2025. p. 21.ISBN: 978-80-7701-051-1.
NOVOTNÝ, P.; VACULA, J.; KOCMAN, F.; KRMÍČEK, A. Towards accurate CFD simulation of highly thermally stressed journal bearings in turbochargers: heat transfer, cavitation, and two-phase flow. KOKA 2025. 1. Brno: MENDELU, Faculty of AgriSciences, Department of Technology and Automobile Transport, 2025. p. 161.ISBN: 978-80-7701-051-1.
VACULA, J.; NOVOTNÝ, P. On the Influence of the Convective Term in the Navier–Stokes Equation on the Forces in Hydrodynamic Bearings. Lubricants, 2025, vol. 13, iss. 7, p. 1-19. ISSN: 2075-4442.
NOVOTNÝ, P.; VACULA, J.; KOCMAN, F.; KRMÍČEK, A. An Advanced Approach for the Analysis of the Rotor Dynamics of a Ball Bearing Turbocharger. Engineering Proceedings, 2025, vol. 113, iss. 21, p. 1-9.
Článek Scopus
2024
VACULA, J.; NOVOTNÝ, P.; KUDLÁČEK, P.; KOCMAN, F. Influence of a casing treatment on operating parameters of a centrifugal compressor. Liberec: Technická univerzita v Liberce, Fakulta strojní, Katedra vozidel a motorů, 2024. p. 66.
NOVOTNÝ, P.; VACULA, J.; KUDLÁČEK, P.; KOCMAN, F. Investigation of Gas Blow-by Through Turbocharger Sealing System Using Advanced Computational Simulations. Engineering Proceedings, 2024, vol. 79, iss. 1, p. 1-5. ISSN: 2673-4591.
NOVOTNÝ, P.; VACULA, J.; KUDLÁČEK, P.; KOCMAN, F. Prediction of gas leakage through the turbocharger sealing system. 55. mezinárodní vědecká konference zaměřená na výzkumné a výukové metody v oblasti vozidel a jejich pohonů. 1. Liberec: Technická univerzita v Liberce, Fakulta strojní, Katedra vozidel a motorů, 2024. p. 92.ISBN: 978-80-7494-711-7.
2023
VACULA, J.; NOVOTNÝ, P. Identification of Aerodynamic Tonal Noise Sources of a Centrifugal Compressor of a Turbocharger for Large Stationary Engines. Applied Sciences-Basel, 2023, vol. 13, iss. 10, p. 1-20. ISSN: 2076-3417.
NOVOTNÝ, P.; KUDLÁČEK, P.; VACULA, J. Explanation of the mechanisms of unsteady gas flow through the turbocharger seal system, including thermal and structural interactions. Propulsion and Power Research, 2023, vol. 12, iss. 2, p. 180-198. ISSN: 2212-540X.
NOVOTNÝ, P.; KUDLÁČEK, P.; VACULA, J.; KOCMAN, F. Innovative approach to reduce friction losses in turbocharger journal bearings. Scientific Proceeding KOKA 2023. 70. Brno: Brno University of Technology, Faculty of Mechanical Engineering, 2023. p. 20.ISBN: 978-80-214-6164-2.
2022
VACULA, J.; NOVOTNÝ, P. Critical pressure in liquids due to dynamic choking. PHYSICAL REVIEW E, 2022, vol. 105, iss. 4, p. 1-10. ISSN: 2470-0045.
KUDLÁČEK, P.; NOVOTNÝ, P.; VACULA, J.; KOCMAN, F. Investigating the Effect of Rotor Design Changes on Mechanical Losses Due to Rotor-Fluid Interaction. Journal of Mechanical Engineering - Strojnícky časopis, 2022, vol. 72, iss. 03, p. 71-80. ISSN: 2450-5471.
VACULA, J.; NOVOTNÝ, P.; KUDLÁČEK, P. Application of a Casing Treatment to a Centrifugal Compressor. Scientific Proceedings KOKA 2022. Bratislava: Slovak University of Technology in Bratislava, Faculty of Mechanical Engineering, 2022. ISBN: 978-80-227-5215-2.
KUDLÁČEK, P.; NOVOTNÝ, P.; VACULA, J. Experimental Verification of the Effect of Rotor Design Changes on the Mechanical Losses. Scientific Proceedings KOKA 2022. Bratislava: Slovak University of Technology in Bratislava, Faculty of Mechanical Engineering, 2022. p. 97.ISBN: 978-80-227-5215-2.
2021
VACULA, J.; NOVOTNÝ, P. An Overview of Flow Instabilities Occurring in Centrifugal Compressors Operating at Low Flow Rates. JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME, 2021, vol. 143, iss. 11, p. 1-13. ISSN: 0742-4795.
KUDLÁČEK, P.; NOVOTNÝ, P.; VACULA, J. Modelling Frictional Losses of Turbochargers due to Rotor-Fluid Interaction. Sborník přednášek KOKA 2021. Praha: Česká zemědělská univerzita v Praze, Technická fakulta, 2021. p. 100.ISBN: 978-80-213-3132-7.
NOVOTNÝ, P.; VACULA, J.; KUDLÁČEK, P. Virtual Turbocharger as a Tool for Reality Simulation. In Mechanisms and Machine Science, Proceedings of I4SDG Workshop 2021. 1. Cham: Springer, 2021. p. 535-544. ISBN: 978-3-030-87382-0.
Stať ve sborníku v databázi WoS či Scopus
NOVOTNÝ, P.; VACULA, J.; KUDLÁČEK, P. Innovative Approach to Reduce Friction Losses in Turbocharger Thrust Bearings. Sborník přednášek KOKA 2021. Praha: Česká zemědělská univerzita v Praze, Technická fakulta, 2021. p. 140.ISBN: 978-80-213-3132-7.
VACULA, J.; NOVOTNÝ, P.; KUDLÁČEK, P. Classification of Aerodynamic Instabilities in a Centrifugal Compressor. Sborník přednášek KOKA 2021. Praha: Česká zemědělská univerzita v Praze, Technická fakulta, 2021. p. 90.ISBN: 978-80-213-3132-7.
NOVOTNÝ, P.; VACULA, J.; JONÁK, M. Evolutionary Optimisation of the Thrust Bearing Considering Multiple Operating Conditions in Turbomachinery. International Journal of Mechanical Sciences, 2021, vol. 195, iss. 2021, p. 1-13. ISSN: 0020-7403.
NOVOTNÝ, P.; VACULA, J.; HRABOVSKÝ, J. Solution strategy for increasing the efficiency of turbochargers by reducing energy losses in the lubrication system. Energy, 2021, vol. 236, iss. 121402, p. 1-16. ISSN: 0360-5442.
2020
NOVOTNÝ, P.; VACULA, J.; DLUGOŠ, J.; JONÁK, M. Analytical Tool for the Identification of Vibration and Noise Sources in Turbochargers. 51st International Scientific Conference of Czech and Slovak Universities and Institutions Dealing with Motor Vehicles and Internal Combustion Engines Research. 1. Praha: České vysoké učení technické v Praze, 2020. p. 46.ISBN: 978-80-01-06744-4.
NOVOTNÝ, P.; DLUGOŠ, J.; VACULA, J. Application of Multibody Dynamics Tools for Determination of Engine Excited Turbocharger Vibrations. In ENGINEERING MECHANICS 2020. 1st edition. 2020. p. 384-387. ISBN: 978-80-214-5896-3.
*) Citace se generují jednou za 24 hodin.