Measurement of Cavitation Shapes on Model Propeller Blades Using Combination Line CCD Camera Method

Abstract

Improving the theoretical prediction of propeller cavitation requires an investigation of unsteady propeller blade cavitation. We recently developed a new combination-line charge-coupled device camera-based method for measuring three-dimensional shapes that is faster and more accurate than conventional methods. To verify the system’s effectiveness, model experiments were conducted in the National Maritime Research Institute’s large cavitation tunnel using the highly skewed propeller of a training ship “Seiun-Maru-I”. In this paper, we introduce the measurement system and experimental results obtained for a model propeller blade and cavity shapes and show the effectiveness of the developed measurement system.