PROPELLER-WAKE STUDY APPLICATION NOTE STEREOPIV-006 An experimental investigation of a five-blade propeller wake behind a ship model was performed using Stereo Particle Image Velocimetry (StereoPIV) in a large free surface cavitation tunnel. Investigation of the wake at different longitudinal stations and its evolution in phase with the propeller pointed out the ca- pability of stereo-PIV in resolving the complexity of the flow field. Phase-averaged results provide a de- tailed picture of the nature of the flow field. The blade viscous wake, which develops from the blade surface boundary layers, the trailing vortex sheets that are due to the radial gradient of the bound circulation, and the velocity fluctuation distributions were identified. The complex interacti

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