Investigation of cavitation bubble inception, deformation and collapse
Abstract
The objective of this work is to investigate the mechanisms that control the evolution of a cavitation bubble, from inception to breakup, and the erosion resulting from the bubble collapse. Two configurations will be considered: (1) a static single cavitation bubble generated close to a solid surface, (2) a high speed turbulent cavitating flow, where bubble inception, deformation, oalescence and implosion in a fluctuating velocity and pressure field will be monitored. In both configurations, the surface erosion resulting from the bubble collapse will be investigated. The specific tasks and timeline of this 3-year effort include: ~ 11/1/18-8/31/19 (Task 1): Analyse the conditions of single bubble collapse and subsequent erosion. ~ 5/1/19-4/31/20 (Task 2a): X-ray imaging of cavitating flows (1st set of experiments) and analysis of the pressure fluctuations. ~ 5/1/20-1/31/21 (Task 2b): Analysis of the bubble deformations, coalescence and breakup. ~ 2/1/21-10/31/21 (Task 2c): X-ray imaging (2nd set of experiments) and analysis of the mechanisms of cavitation erosion. The proposed efforts will provide the US Navy with knowledgebase that would enable to develop more efficient and quieter propulsors than the fleet ones.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 23, 2019
- Source ID
- N000141912019
Entities
People
- Olivier Coutier-delgosha
Organizations
- Office of Naval Research
- United States Navy
- Virginia Tech