This paper is devoted to experimental investigation of formation of precessing vortices pair in a vortex chamber with a cylindrical working area. Flow structure was registered by means of a high-speed visualization technique. Quantitative measurements characterizing the vortex properties were carried out using a 2D particle image velocimetry (PIV) technique synchronized with wall pressure measurements. The results show that two symmetrical precessing helical vortices are present downstream of the tangential nozzles.The phase- averaged analysis confirms the presence of large-scale twin vortex structure that visualized by small air bubbles dissolved in water.
|Number of pages||5|
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 28 Nov 2019|
|Event||3th Siberian Thermophysical Seminar, STS 2019 - Novosibirsk, Russian Federation|
Duration: 27 Aug 2019 → 29 Aug 2019