BLUFF-BODIES VORTEX SHEDDING SUPRESSION BY DIRECT NUMERICAL SIMULATION

Abstract

Vortex shedding is responsible for harmful vibrations on immersed
structures and for increasing their drag coefficients. Thus vortex shedding
suppression is highly interesting in order of decrease maintenance costs of
standing structures and fuel costs on moving ones. Vortex shedding
suppression is here achieved with the use of splitter plates by means of
numerical simulations at a low Reynolds range, Re 100 and 160. For this
purpose it has been used a high order finite difference method in association
with a virtual boundary method, responsible for the obstacles
representation. The use of this novel numerical method showed a great
concordance with experimental results by means of low computational
costs.