Detail publikačního výsledku

COMPUTATIONAL SIMULATION OF CAVITATION BUBBLE COLLAPSE

BURDA, R.; RUDOLF, P.

Originální název

COMPUTATIONAL SIMULATION OF CAVITATION BUBBLE COLLAPSE

Anglický název

COMPUTATIONAL SIMULATION OF CAVITATION BUBBLE COLLAPSE

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

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

Klíčová slova v angličtině

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

Autoři

BURDA, R.; RUDOLF, P.

Rok RIV

2023

Vydáno

24.11.2020

Nakladatel

BRNO UNIV TECHNOL, FAC MECHANICAL ENGINEERING

Místo

BRNO

ISBN

978-80-214-5896-3

Kniha

ENGINEERING MECHANICS 2020

ISSN

1805-8248

Periodikum

Engineering Mechanics

Svazek

26

Číslo

1

Stát

Česká republika

Strany od

94

Strany do

97

Strany počet

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"
}

Dokumenty

EM2020