Доступ предоставлен для: Guest
TSFP DL Home Архив Исполнительный Комитет

TURBULENT BOUNDARY LAYER SEPARATION - PASSIVE CONTROL

Ola Logdberg
KTH Mechanics, Royal Institute of Technology S-100 44 Stockhom, Sweden

P. Henrik Alfredsson
Liné Flow Centre, KTH Mechanics, Osquars Backe 18, SE-100 44 Stockholm, Sweden

Аннотация

We report results where a separated turbulent boundary layer is controlled using vortex generators of various heights. Measurements are performed using Particle Image Velocimetry (PIV) and velocity profiles, reversed flow profiles and integral parameters of the boundary layer are presented. The effectiveness of the separation control is shown to depend on the circulation induced by the vortex generators and for the largest values a complete cancellation of the separation seems to be possible.