Abstract
This paper refers to the design and validation of a distortion generator which is supposed to add periodic disturbances to an inlet flow. The usually homogeneous flow to the fan in a compressor rig’s inlet is meant to be disturbed by specifically modeled inlet separations in order to investigate the impact of distortion on the performance of the compressor. Therefore a suitable distortion generator was designed analytically and validated experimentally. Additionally numerical simulations were carried out to study the influence of the inlet walls and the spinner on the aerodynamic behavior of the distortion generator. Experimental data on the interaction of the distortion generator with the oncoming flow was derived by means of time-resolved Particle Image Velocimetry (PIV) measurements in the Transonic Wind Tunnel Munich. The TAU code developed by the German Aerospace Center was used to model the flow around the distortion body numerically. The results of the experimental and numerical investigations lead to the conclusion that the designed distortion generator is suited to examine the effect of inflow distortions.
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Lesser, A., Schulze, S., Niehuis, R., Kähler, C., Lieser, J. (2013). Analytical Design of an Inlet Distortion Generator and Its Experimental and Numerical Validation. In: Dillmann, A., Heller, G., Kreplin, HP., Nitsche, W., Peltzer, I. (eds) New Results in Numerical and Experimental Fluid Mechanics VIII. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 121. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-35680-3_5
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DOI: https://doi.org/10.1007/978-3-642-35680-3_5
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-35679-7
Online ISBN: 978-3-642-35680-3
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