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Title: Three dimensional acoustic microbubble dynamics near rigid boundary
Author: Manmi, Kawa
ISNI:       0000 0004 5351 6019
Awarding Body: University of Birmingham
Current Institution: University of Birmingham
Date of Award: 2015
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Dynamics of cavitation microbubbles due to high intensity ultrasound are associated with important applications in biomedical ultrasound, ultrasonic cleaning and sonochemistry. Previous numerical studies on this phenomenon were for an axisymmetric configuration. In this thesis, a computational model is developed to simulate the three dimensional dynamics of acoustic bubbles by using the boundary integral method. A bubble collapses much more violently subjected to high intensity ultrasound than when under normal constant ambient pressure. A few techniques are thus implemented to address the associated numerical challenge. In particular, a high quality mesh of the bubble surface is maintained by implementing a new hybrid approach of the Lagrangian method and elastic mesh technique. It avoids the numerical instabilities which occur at a sharp jet surface as well as generates a fine mesh needed at the jet surface.
Supervisor: Not available Sponsor: Kurdistan Regional Government (KRG)
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: QA Mathematics