PRELIMINARY-RESULTS FROM A PARTICLE IMAGE VELOCIMETRY STUDY OF BLADE-VORTEX INTERACTION

The results of a blade-vortex interaction (BVI) study incorporating pa rticle image velocimetry (PIV) are presented. Test cases encompass a v ariety of intersection geometries, including head-on parallel interact ions. Results provide quantified flow visualisation images of the flow s generated near the blade tip and inboard during interactions. PIV re sults are examined in the light of understanding gained from previous pressure measurements made from the same BVI facility. Both the diffic ulties and the advantages of utilising the PIV technique in this appli cation are discussed.