Experimental and Numerical Flow Visualization in a Transonic Turbine

Article type: Research Article

Authors: Woisetschläger, J. | Pecnik, R. | Göttlich, E. | Schennach, O. | Marn, A. | Sanz, W. | Heitmeir, F.

Affiliations: Institute for Thermal Turbomachinery and Machine Dynamics, Graz University of Technology Inffeldgasse 25A, A – 8010 Graz, Austria. E-mail: jakob.woisetschlaeger@tugraz.at; URL: www.ttm.tugraz.at

Abstract: This paper focuses on the visualization of both experimental and numerical results and presents research in a highly-loaded cold-flow transonic turbine under continuous and engine-representative conditions. Special focus was placed on blade row interaction at app. 10600 rpm. While the first step was the investigation of a single stage machine (stator-rotor), the second step extended the test rig to a one-and-a-half stage configuration (stator-rotor-stator). Measurements were carried out in the transonic test turbine at Graz University of Technology using Particle-Image-Velocimetry and Laser-Doppler-Anemometry. The main results of these experiments are discussed and compared to numerical simulations.

Keywords: Particle Image Velocimetry, turbomachinery, transonic flow, blade row interaction, computational fluid dynamics

Journal: Journal of Visualization, vol. 11, no. 1, pp. 95-102, 2008