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Pablo Villanueva Perez

Senior lecturer

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Revealing the origins of vortex cavitation in a Venturi tube by high speed X-ray imaging

Author

  • Hitoshi Soyama
  • Xiaoyu Liang
  • Wataru Yashiro
  • Kentaro Kajiwara
  • Eleni Myrto Asimakopoulou
  • Valerio Bellucci
  • Sarlota Birnsteinova
  • Gabriele Giovanetti
  • Chan Kim
  • Henry J. Kirkwood
  • Jayanath C.P. Koliyadu
  • Romain Letrun
  • Yuhe Zhang
  • Jozef Uličný
  • Richard Bean
  • Adrian P. Mancuso
  • Pablo Villanueva-Perez
  • Tokushi Sato
  • Patrik Vagovič
  • Daniel Eakins
  • Alexander M. Korsunsky
Show all

Summary, in English

Hydrodynamic cavitation is useful in many processing applications, for example, in chemical reactors, water treatment and biochemical engineering. An important type of hydrodynamic cavitation that occurs in a Venturi tube is vortex cavitation known to cause luminescence whose intensity is closely related to the size and number of cavitation events. However, the mechanistic origins of bubbles constituting vortex cavitation remains unclear, although it has been concluded that the pressure fields generated by the cavitation collapse strongly depends on the bubble geometry. The common view is that vortex cavitation consists of numerous small spherical bubbles. In the present paper, aspects of vortex cavitation arising in a Venturi tube were visualized using high-speed X-ray imaging at SPring-8 and European XFEL. It was discovered that vortex cavitation in a Venturi tube consisted of angulated rather than spherical bubbles. The tangential velocity of the surface of vortex cavitation was assessed considering the Rankine vortex model.

Department/s

  • Synchrotron Radiation Research
  • NanoLund: Centre for Nanoscience
  • LTH Profile Area: Nanoscience and Semiconductor Technology
  • LTH Profile Area: Photon Science and Technology
  • LU Profile Area: Light and Materials

Publishing year

2023-12

Language

English

Publication/Series

Ultrasonics Sonochemistry

Volume

101

Document type

Journal article

Publisher

Elsevier

Topic

  • Fluid Mechanics

Keywords

  • Bubble
  • Hydrodynamic cavitation
  • Vortex
  • X-ray imaging

Status

Published

ISBN/ISSN/Other

  • ISSN: 1350-4177