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Recent Developments in Pulsating Water Jets

  • Josef Foldyna
Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)

Abstract

Pulsating water jets represent one of the ways to intensify effects of water jetting technology on materials. In the first part of the paper, phenomena occurring during the impact of a drop of a liquid on a solid surface and reasons for their use leading to the generation of pulsating water jets are briefly described. In the next part, the concept of hydrodynamic nozzle for generating of pulsating water jets is briefly mentioned. The final part of the paper deals with the comparison of the erosive effects of continuous and pulsating jets generated by the acoustic generator and the hydrodynamic nozzle. Presented results proved superior performance of the pulsating jet generated by the acoustic generator. The hydrodynamic nozzle exhibits also great potential for significant improvement of water jetting performance.

Keywords

Water jet Impact pressure Hydrodynamic nozzle 

Notes

Acknowledgement

The work presented in the paper was performed under the support of the project the Institute of Clean Technologies for Mining and the Utilization of Raw Materials for Energy Use – Sustainability program, reg. no. LO1406 financed by the Ministry of Education, Youth and Sports of the Czech Republic, and the long-term conceptual development of the research institution RVO: 68145535. The author is thankful for the support.

References

  1. 1.
    Ovid: Epistulae ex Ponto, IV, 10, 5 (expanded in the Middle Ages)Google Scholar
  2. 2.
    Raghavan, C., Ting, E.: Hyper pressure water jet cutting of thin sheet metal. In: Labus, T.J. (ed.). In: Proceedings of 6th American Water Jet Conference, pp. 493–504. Water Jet Technology Association (1991)Google Scholar
  3. 3.
    Hancox, N.L., Brunton, J.H.: The erosion of solids by the repeated impact of liquid drops. Philos. Trans. Roy. Soc. Lond. Ser. A. Math. Phys. Sci. 1110(260), 121–139 (1966)CrossRefGoogle Scholar
  4. 4.
    de Haller, P.: Untersuchungen über die durch Kavitation hervorgerufenen Korrosionen. Schweizerische Bauzeitung 21& 22(101), 243–246, 260–264 (1933)Google Scholar
  5. 5.
    Klich, J., Klichová, D., Foldyna, V., Hlaváček, P., Foldyna, J.: Influence of variously modified surface of aluminium alloy on the effect of pulsating water jet. Strojniski Vestnik-J. Mech. Eng. 10(63), 577–582 (2017)CrossRefGoogle Scholar
  6. 6.
    Foldyna, J., Švehla, B.: Method of generation of pressure pulsations and apparatus for implementation of this method. US patent No. 7,934,666 (2011)Google Scholar
  7. 7.
    Zeleňák, M., Foldyna, J., Ščučka, J., Hloch, S., Říha, Z.: Visualisation and measurement of high-speed pulsating and continuous water jets. Measurement 72, 1–8 (2015)CrossRefGoogle Scholar
  8. 8.
    Lehocká, D., Klich, J., Foldyna, J., Hloch, S., Królczyk, J.B., Cárach, J., Krolczyk, G.: Copper alloys disintegration using pulsating water jet. Measurement 82, 375–383 (2016)CrossRefGoogle Scholar
  9. 9.
    Říha, Z.: Tool and hydrodynamic nozzle for generating high-pressure pulsating jet of liquid without cavitation and saturated vapors. Czech patent No. 306290 (2016)Google Scholar
  10. 10.
    Klich, J., Říha, Z., Foldyna, V.: Influence of hydrodynamic nozzle wear on erosion effect of self-excited pulsating water jet. In: Klichová, D., Sitek, L. (eds.) Water Jet 2017 – Research, Development, Applications, pp. 73–80. Ústav geoniky AV ČR, Ostrava (2017)Google Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Institute of Geonics of the CASOstravaCzech Republic

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