Effects of surface curvature on cavitation evolution and reloading

In this work, effects of surface curvature on cavitation evolution and structure loadings are investigated. We extended the latest techniques of fluid-structure Riemann problem and the modified ghost fluid method to treat the flow-structure nonlinear interaction. Results disclosed that a concave shape can strongly lead to not only shock focus but also rarefaction wave intensification; such intensification subsequently enhances local cavitation collapse and thus cavitation reloading. The magnitude of such enhancement increases nonlinearly with the increase of surface curvature. A convex shape can weaken the shock impact and subsequent cavitation collapse. However, such effect is well limited.