Application of ultrasound for the mixing of molten aluminum (measuring and calculating cavitation induced by ultrasound)

MSc graduation project of Marieke Schenker
Location: Lab. for Aero & Hydrodynamics
Supervisors: Prof. dr. ir. B.J. Boersma, dr.ir. M.J.B.M. Pourquie & dr. D. Eskin
Defense: January 11 2011

Project description:

The project is about the quantification of ultrasound-induced cavitation. Cavitation enhances the quality of the product when applied during or before solidification of molten aluminum. The project is set-up in cooperation with the department of material sciences, but for me does not involve handling metal. Instead measurements are done in water which has almost the same kinematic viscosity as molten aluminum, an important parameter in the cavitation process. This makes it possible to use measurement methods which would be impossible in aluminum, such as optical techniques (PIV) and sound-measurements (not high temperature resistant). Currently the focus is on localized sound-measurements inside the fluid. Further in the project PIV techniques will be used to observe the flow induced by the cavitation.

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