Research into ultrasoic and hydrodinamic cavitation phenomena in a hydraulic system




ultrasonic cavitation; hydraulic tank; hydrodynamic cavitation; gear pump; plastic; PIV-visualization


The article describes the course of the ultrasonic cavitation in a hydraulic tank and the hydrodynamic cavitation in a gear pump. The course of those phenomena was confirmed in experimental tests carried out with the use of a tank and a pump made of transparent plastics. It has been proved that the oscillator-cavitation system made according to the original project is useful to induce the phenomenon of ultrasonic cavitation. It has also been shown that the PIV visualization method, consisting in a special system of illuminating transparent objects and recording the flow through those objects with a fast camera, is useful for the studying of the cavitation phenomena.

A visible interaction between the ultrasonic and the hydrodynamic cavitation was observed. The induction of ultrasonic cavitation in the tank causes degassing of the oil, and the degassed oil supplying the pump reduces the hydrodynamic cavitation in its internal channels and clearances. This is an example of beneficial effects of the ultrasonic cavitation on the operation of a pump and a hydraulic system.

The presented work is an example of effective co-operation between the communities of Wroclaw University of Science and Technology and Igor Sikorsky Kiyv Politechnic Institute, National Technical University of Ukraine.


  1. A.F. Luhovskyi, O.M. Yakhno, “Ultrazurkovie rozpilennja ridini ta mozhlivosti iogo zastosuvannia v tehnologichnih prociesah”, Gіrnichі, budіvelnі, dorozhnі ta melіorativnі mashini, Vol. 64, pp. 49–55, 2004.
  2. A.F. Luhovskyi, Ultrazrukovaja kavitacja v sovremiennyh technologiach, 2007.
  3. K. Wójs, Kawitacja w cieczach o różnych właściwościach reologicznych. Oficyna Wydawnicza Politechniki Wrocławskiej, Wrocław, 2004.
  4. M. Doudkin, et al., “Process modeling and experimental verification of the conditions of ice coverage destruction of automobile roads”, Journal of Mechanical Engineering Research and Developments, 42(4), pp. 1–8, 2019.
  5. M. Doudkin, et al., “Computer Modeling Application for Analysis of Stress-strain State of Vibroscreen Feed Elements by Finite Elements Method”, Communications in Computer and information Science, 998, pp. 82–96, 2019.
  6. U. Warzyńska, J. Stryczek, “Experimental research into the influence of operational parameters on the characteristics of pressure pulsation dampers”. Advances in hydraulic and pneumatic drives and control 2020, Cham: Springer, pp. 323–332, 2021.
  7. U. Warzyńska, T. Siwulski, “Influence of boundary conditions on the accuracy of pulsation dampers characteristics in analytical models”, International Journal of Fluid Power, Vol. 21, No. 3, pp. 363–381. 2021.
  8. P. Osiński, G. Chruścielski, L. Korusiewicz, “Theoretical and experimental fatigue strength calculations of lips compen-sating circumferential backlash in gear pumps”, Energies., Vol. 14, No. 1, art. 251, pp. 1–14. 2021.
  9. W. Kollek, Z. Kudźma and M. Stosiak, “Possibilities of diagnosing cavitation in hydraulic systems”, Archives of Civil and Mechanical Engineering, Vol. 7, No. 1, pp. 61–73, 2007.
  10. Z. Kudźma, M. Stosiak, “Studies of flow and cavitation in hydraulic lift valve”, Archives of Civil and Mechanical Engi-neering, Vol. 15, No. 4, pp. 951–961, 2015.
  11. P. Stryczek, F. Przystupa and M. Banaś, “Design and Research on a Hydraulic Cylinder With Plastic Components”. W: Proceedings of ASME 2016 9th FPNI Ph. D. Symposium on Fluid Power, Florianopolis, SC, Brazil, October 26-28, 2016. [New York]: ASME, pp. 1–8, 2016.
  12. S. Gafurov, L. Rodionov and G. Makaryants, Simulation of Gear Pump Noise Generation.
  13. S. Gafurov, L. Rodionov, Acoustic visualization of cavitation in fuel combination pump.
  14. S. Stryczek, “Hydrostatic drive”, Vol. 1. – Elements, Vol. 2 – Systems, WNT, Warszawa, 2005.
  15. J. Stryczek, et al., “Visualisation research of the flow processes in the outlet chamber–outlet bridge–inlet chamber zone of the gear pumps”, Archives of Civil and Mechanical Engineering, Vol. 15, No. 1, pp. 95–108, 2015.
  16. M. Banaś, et al., “Visualization of flow phenomena in hydraulic throttle valves of plastics”, January 2018. MATEC Web Conf. Vol. 211(9), 19001
  17. A. Movchanuk, et al., “Ultrasonic Cavitation Equipment with a Liquid Pressure Transformer”, Advances in Hydraulic and Pneumatic Drives and Control 2020, Cham: Springer, pp. 282–29, 2020.
  18. Zilinskyi, et al., “Study of the Structural Materials Cavitation Strength in Ultrasonic Technological Equipment”, Advances in Hydraulic and Pneumatic Drives and Control, Cham: Springer, pp. 344–354, 2020.
  19. K. Luhovska, et al., “Technology of Ultrasonic Cavitation Cleaning of Elastic Surfaces”, Advances in Hydraulic and Pneumatic Drives and Control 2020, Urszula Warzyńska. Cham: Springer, pp. 264–271.
  20. O. Luhovskyi, et al., “Mobile Equipment for Ultrasonic Cavitation Inactivation of Microorganisms in the Liquid Envi-ronment”, Advances in Hydraulic and Pneumatic Drives and Control 2020, Urszula Warzyńska. Cham: Springer, pp. 272-281.
  21. I. Nochnichenko, et al., “Research of the Influence of Hydraulic Orifice Material on the Hydrodynamic Cavitation Pro-cesses Accompanied by Luminescence”, Advances in Hydraulic and Pneumatic Drives and Control 2020, Urszula Warzyńska. Cham: Springer, pp. 293–300.
  22. O. Luhovskyi, et al., Ultrazrukovyi rozpiljurach, patent Ukraine No. 117879, Opublikovan 10.10.2018, Vol. 19.
  23. J. Stryczek, “Fundamentals of designing hydraulic gear machines”, Wydawnictwo Naukowe PWN S.A., Warszawa, 2020.
  24. P. Antoniak, J. Stryczek, “Visualization study of the flow processes and phenomena in the external gear pump”, Archives of Civil and Mechanical Engineering, Vol. 18, pp 1103–1115, 2018.
  25. V. Sahoo, et al., “Visualization of leakage flow through active contacts in toothed external gear pumps : CFD and photo imaging techniques”, Journal of Flow Visualization and Image Processing, Vol. 23, No. 3/4, pp. 345–376, 2016.
  26. J. Stryczek, P. Stryczek, “Synthetic Approach to the Design, Manufacturing and Examination of Gerotor and Orbital Hy-draulic Machines”, Energies, No. 14(3), 624, 2021.




How to Cite

J. Stryczek, “Research into ultrasoic and hydrodinamic cavitation phenomena in a hydraulic system”, Mech. Adv. Technol., vol. 5, no. 1, pp. 33–40, Jun. 2021.