This work focuses on vortex-within-a-vortex (VV) structures behind three different shapes of forked caudal fin with a heaving-pitching motion. The results show that the synchronization trailing-edge vortex separation and shedding leading-edge contributes to generation VV structure. fins chord lengths can be observed almost simultaneously. Strouhal number not only determines vortices in wake but...

This paper studies Karman vortex shedding and water-level fluctuation in the inverted siphon structure of Middle Route South-to-North Water Diversion Project (MR-SNWDP) China. Field investigations numerical simulations for outlet were performed to explore characteristics hazards vortex. Numerical results compared with measured data verify effectiveness reliability model. Based on model, it is f...