Numerical Simulation of Forebody Vortices at High Angle of Attack and their Control Using Innovative Systems
Abstract
The existence of asymmetric flows at high angle of attack around slender bodies of revolution has been known since the early 50's and many experimental studies were conducted in the 80?s and 90's. The work presented here is devoted to the numerical simulation of such flows, and to their control using mechanical or fluidic devices. It was found that with RANS methods using classical turbulence models the flow remains symmetric at 45 degrees of incidence and, that only hybrid approach such that a DES (Detached Eddy Simulation) method can give an asymmetric flow organization as observed during the experiment. Moreover, it is shown that with this kind of method the overall forces, as well as the pressure distributions are in a good agreement with the experimental data. The second part of this study deals with the efficiency of control devices. Two types of actuator, continuous or pulsed jets and Deployable Flow Effectors were considered. Both have proven their capability to force the asymmetry and to generate side forces and yawing moments.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 2006
- Accession Number
- ADA500727
Entities
People
- Pascal Denis
- Patrick Champigny
- Sebastien Deck
- Sonia Magniant