This paper presents results of a study of vortex wake structures and measurements of instantaneous 3D velocity fields downstream of a triblade turbine model. Two operation modes of flow around the rotor with different tip speed ratios were tested. Initially the wake structures were visualized and subsequently quantitative data were recorded through velocity field restoration from particle tracks using a stereo PIV system.The study supplied flow diagnostics and recovered the instantaneous 3D velocity fields in the longitudinal cross section behind a tribladed rotor at different values of tip speed ratio. This set of data provided a basis for testing and validating assumptions and hypothesis regarding classical theories of rotors.
Bibliographical noteThe research was partially supported in the framework of projects of the Ministry of Science and Education RF (Project No. 2.1.2/1270, SC No. 14.740.11.0144 and SC No. 11.519.11.6022), RFBR Grants (No. 10-08-01093) and Danish Energy Technology Development and Demonstration Program (No. 64011-0094)
- Rotor systems
- Helical vortices
- Vortex wake
- Stereoscopic Particle Image Velocimetry