Spatiotemporal analysis of sheet and cloud cavitation and its damage potential

Abstract The cavitation regime has a substantial influence on the damage potential, thus it to be considered in any specific investigation. For this purpose, we set up test rig at Technische Universität Darmstadt using Circular Leading Edge hydrofoil (CLE) analyse potential of sheet and cloud cavitation. Exceeding critical Reynolds number Re c , transitions from harmless aggressive High-speed recordings are correlated with high frequency pressure data wall-mounted piezoelectric transducer. Spatial temporal content cavitating flow captured applying proper orthogonal decomposition (POD) high-speed recordings. In order determine apply copper foil surface, which plastic, crater-shaped deformations due bubble collapses occur. Images surface recorded before after each run via two-dimensional Pit-Count microscopy. We correlate spatial modes field eroded rate pitting tests leading result that associated increasing size is more aggressive. A power law identified where increases fourteenth number.