The roles of individual force components on the capture mechanism of bubbles around a vortical flow

Journal article (2024)

Authors

T.-Y. Huang Ship Hydromechanics - Mechanical, Maritime and Materials Engineering
Artur K. Lidtke Maritime Research Institute Netherlands (MARIN)
Marinus Stigter Fluid Mechanics - Mechanical, Maritime and Materials Engineering
Martijn X. van Rijsbergen Maritime Research Institute Netherlands (MARIN)
T.J.C. van Terwisga Maritime Research Institute Netherlands (MARIN), Ship Hydromechanics and Structures - Mechanical, Maritime and Materials Engineering
Research Group
Ship Hydromechanics (Mechanical, Maritime and Materials Engineering) (TU Delft)
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Published Date

2024

Language

English

Faculty

Mechanical, Maritime and Materials Engineering

Department

Marine and Transport Technology

Research Group

Ship Hydromechanics

Abstract

The mechanism of bubble capture in a vortical flow is investigated using a Lagrangian bubble tracking method. The motion of bubbles and the factors influencing their movement are examined. Detailed analysis is conducted on the roles played by each force component, such as the lift, added mass, and centrifugal forces, in the bubble capture process. An interesting finding is the identification of the stabilizing effect of the azimuthal lift force on the bubble capture mechanism. Furthermore, a model for capture time based on the radial force balance is also developed, and validated with existing experimental data. These findings, including the force mechanism and capture time model, provide a foundation for understanding the bubble capture process and can potentially inform future studies on tip vortex cavitation inception such as determining the cavitation hotspot.