Journal article

Phase-averaged flow statistics in compressors using a rotated hot-wire technique

TO Jelly, IJ Day, L di Mare



A technique based on a rotated hot wire has been developed to characterise the unsteady, three-dimensional flow field between compressor blade rows. Data are acquired from a slanted hot wire rotated through a number of orientations at each measurement point. Phase-averaged velocity statistics are obtained by solving a set of sensor response equations using a weighted, non-linear regression algorithm. The accuracy and robustness of the method were verified a priori by conducting a series of tests using synthetic data. The method is demonstrated by acquiring a full set of phase-averaged flow statistics in the wake of a compressor stator blade row. The technique allows three components of phase..

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University of Melbourne Researchers


Funding Acknowledgements

The authors gratefully acknowledge RollsRoyce plc and the UK TSB TUFT programme for funding this work and granting permission for its publication. All authors wish to thank Dr. J. J. Adamczyk, Dr. J. Bolger, Prof. N. A. Cumpsty, Dr. S. J. Gallimore, and Dr. J. S. S. Wong for their insightful comments and interest in this work. T.O.J. extends personal thanks to Mr. D. Barlow, Mrs. M. Folk, and Dr. H. C.-H. Ng for their assistance in the laboratory.