Publication detail

COMPUTATIONAL SIMULATION OF CAVITATION BUBBLE COLLAPSE

BURDA, R. RUDOLF, P.

Original Title

COMPUTATIONAL SIMULATION OF CAVITATION BUBBLE COLLAPSE

Type

conference paper

Language

English

Original Abstract

Cavitation threatens lifetime of hydraulic machines, ship propellers or diesel injection nozzles, but can also serve as efficient way of pathogenic microorganisms eradication, water disinfection and chemical residuals removal. While classical Rayleigh-Plesset equation provides suitable 1D tool for description of the bubble behavior away from the wall, it suffers serious problems close to solid boundary due to its assumption of bubble sphericity during all stages of the bubble life. Therefore, a detail computational simulation based on RANS equations and multiphase Volume of Fluid approach was performed. Simulation was able to capture microjet, which deforms the bubble in solid wall vicinity, penetrates through bubble interior and is responsible for transformation from vapor bubble to vapor ring. It is important that numerical solution enabled detailed spatial description of the bubble evolution and allowed to distinguish between the pressure peaks caused by microjet impact on the wall and bubble collapse, thereby enhancing our understanding of the bubble collapse close to the solid boundary.

Keywords

Cavitation bubble; Microjet; cavitation bubble collapse; Volume of fluid method; Impact pressure

Authors

BURDA, R.; RUDOLF, P.

Released

24. 11. 2020

Publisher

BRNO UNIV TECHNOL, FAC MECHANICAL ENGINEERING

Location

BRNO

ISBN

978-80-214-5896-3

Book

ENGINEERING MECHANICS 2020

ISBN

1805-8248

Periodical

Engineering Mechanics ....

Year of study

26

Number

1

State

Czech Republic

Pages from

94

Pages to

97

Pages count

4

URL

https://www.engmech.cz/improc/2020/094.pdf

BibTex

@inproceedings{BUT178968,
  author="Radim {Burda} and Pavel {Rudolf}",
  title="COMPUTATIONAL SIMULATION OF CAVITATION BUBBLE COLLAPSE",
  booktitle="ENGINEERING MECHANICS 2020",
  year="2020",
  journal="Engineering Mechanics ....",
  volume="26",
  number="1",
  pages="94--97",
  publisher="BRNO UNIV TECHNOL, FAC MECHANICAL ENGINEERING",
  address="BRNO",
  doi="10.21495/5896-3-094",
  isbn="978-80-214-5896-3",
  issn="1805-8248",
  url="https://www.engmech.cz/improc/2020/094.pdf"
}