A FACILITY FOR SIMULTANEOUS PARTICLE IMAGE VELOCIMETRY AND HIGH-RESOLUTION UNSTEADY PRESSURE MEASUREMENT

This paper describes a facility for the acquisition of simultaneous hi gh quality particle image velocimetry (PIV) and unsteady surface press ures with high spatial and temporal resolution. The facility, develope d through a long-standing collaboration between the Department of Aero space Engineering at Glasgow University and the Fluid Loading and Inst rumentation Centre at Heriot-Watt University, is currently being used in collaborative projects and has the potential to provide a level of detail previously unattainable for CFD validation. Results from both m easurement techniques will be presented to demonstrate the range and p otential of the two systems. In addition, the value of combining the t wo techniques will be demonstrated by results from a blade-vortex inte raction experiment in which both methods were applied. Finally, future applications of the combined system will be discussed.