Numerical investigation of rotor-stator interactions in a 1.5-stage low-speed axial compressor

Jia, Huixia and Vogeler, Konrad and Müller, Lutz and Mailach, Ronald (2007) Numerical investigation of rotor-stator interactions in a 1.5-stage low-speed axial compressor. JOURNAL OF COMPUTATIONAL AND APPLIED MECHANICS, 8 (1). pp. 71-83. ISSN 1586-2070

Preview

Text 8-1-JiaMiKTeX2007V8N1.pdf - Published Version Download (485kB) | Preview

Abstract

The relative motion of rotor and stator leads to viscous and inviscid interactions between the blade rows. This is the reason why the flow in turbomachines is periodically unsteady. The unsteady flow field of the first stage with inlet guide vane row (IGV) of the Dresden Low-Speed Research Compressor (LSRC) is investigated using a 3D time-accurate, viscous solver. The unsteady profile pressure distribution on the pressure side (PS) and the suction side (SS) of the rotor at midspan (MS) for the design point are presented and analysed. A comparison to experiments performed at the same compressor is drawn [1, 2]. The pressure fluctuation on the rotor depends on the superimposed effect of the wakes of the inlet guide vane and the potential effect of the downstream stator. The time-resolved pressure in the simulation changes nearly simultaneously along the whole chord length like as also observed in the experiment. A phase shift between the pressure fluctuations on the PS and the SS is found. Furthermore the unsteady blade pressure forces of the rotor blades are calculated from the profile pressure distribution at midspan. The results are compared with the experimental results.

Actions (login required)

Edit Item