Premium
Perimetric blowing at the rear of a bluff body: consequences on the wake dynamics and drag reduction
Author(s) -
Lorite-Díez Manuel,
Jiménez-González José-Ignacio,
Martínez-Bazán Carlos,
Cadot Olivier,
Pastur Luc
Publication year - 2019
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201900044
Subject(s) - wake , drag , bluff , bistability , mechanics , flow control (data) , dynamics (music) , physics , flow (mathematics) , airflow , engineering , acoustics , thermodynamics , telecommunications , quantum mechanics
In a perspective of active flow control of the bistable wake of a square‐back Ahmed body, we show that the steady blowing through a perimetric slit at the rear of the body is not equivalent to a material rear perimetric cavity, the latter being able to suppress the bistable dynamics and symmetrize the wake flow, while the former cannot achieve any of the two targets, indicating that the steady perimetric blowing has no control authority on the symmetric unstable steady solution of the system.