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Published in:
2009 | OriginalPaper | Chapter
Flow Simulations of an Axial Transonic Compressor Stage
Authors : Jens Iseler, Reinhard Niehuis
Published in: High Performance Computing in Science and Engineering, Garching/Munich 2007
Publisher: Springer Berlin Heidelberg
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This paper refers to numerical investigations of a transonic compressor stage for homogeneous and disturbed inflow conditions. The simulations were conducted with the Navier-Stokes Solver TRACE and compared with the experimental results, obtained from measurements accomplished at the DLR in Cologne. In the first part of the planned investigations, the flow behavior of the transonic compressor stage was predicted for undisturbed inlet conditions at design point using steady state simulations. This will be followed by simulations at operation points near instability onset. The second part includes simulations with disturbed inflow conditions. Here, transient simulations are scheduled for predicting correctly the complex flow behavior. Right now, only one blade passage is simulated due to the assumption of periodicity. In case of disturbed inflow conditions, this assumption is no longer valid. Therefore, the whole blade row has to be simulated which leads to a high computational effort.