03.3 - Basic Fluid Dynamics and Flow Control
ANALYSIS OF THE STABILITY OF MULTIPLE HELICAL VORTICES USING COMPLEX-STEP LINEARIZATION
V.G. Kleine, ITA, Brazil; A. Hanifiš, D.S. Henningsonš; šKTH, Sweden
A system of external and internal vortices is created by some blade devices proposed to destabilize the tip vortices of helicopters. The stability of such systems of multiple helical vortices is studied in this work using a complex-step technique to linearize the equations. This investigation elucidate some of the mechanisms of stability of vortices created by rotors.