Synchronized X-ray Densitometry and Surface Pressure Measurements on a Cavitating NACA0015 Hydrofoil to Estimate Bubbly Shock Properties

Measuring properties of the shock waves and their sensitivity to change in flow conditions can help in the understanding and prediction of the role of propagating bubbly shock waves in the multi-modal cavitation dynamics of NACA0015 hydrofoil. In the current study, we obtain time-resolved X-ray densitometry measurements on a larger model (compared to [3]) for better spatial resolution cavity shedding dynamics due to propagating bubbly shocks. Due to lack of availability of surface pressure measurements at the moment, observed shedding dynamics are discussed. Surface pressure measurements and shock properties will be compared in the presentation.