Flow Measurements and Flow Analysis in the ExitRegion of a Radial Turbine

[摘要] Three-dimensional flow measurements using LDV system were obtained in the exit region ofa radial inflow turbine at an off-design operating condition. The measurements reveal acomplex flow pattern near the tip region at the rotor exit due to the interaction of the tipclearance flow. The effect of the rotor on the exit flow field is observed in the proximity ofthe rotor exit. Steady axisymmetric, compressible, turbulent flow computations with a twoequation turbulence model were performed using the PARC code for the meridional flow inthe radial turbine exit region. The computational results obtained in the meridional plane arecompared with the experimental results, which are correlated to the rotor blade rotation inthe exit region of the radial turbine.A version of this paper was presented at the 30th AIAA/ASME/SAE/ASEE Joint PropulsionConference, Indianapolis, Indiana, Paper no. AIAA-94-3075.

[学科分类] 力学，机械学