DYNAMICAL NUCLEI MEASUREMENT - ON THE DEVELOPMENT AND THE PERFORMANCEEVALUATION OF AN OPTIMIZED CENTER-BODY METER

This work is concerned with the development of a center-body venturi f or nuclei measurements of novel design, the Venturix. Our project aims to: 1. Define a specially tailored geometry for cavitation nuclei mea surement. This design study takes into consideration the following mai n aspects: the venturi mean flow in subcavitating regime, the viscous effects, the bubble dynamics. 2. Evaluate the performance of the meter . After testing the proposed design concepts, the venturi operating ch aracteristics, in particular its operational limits, are assessed Fina lly, the performance of the acoustic method used for detecting and cou nting the active nuclei in the venturi is discussed.