naa a22 4500 510765912 CHVBK 20180411083156.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s11630-013-0616-z doi (NATIONALLICENCE)springer-10.1007/s11630-013-0616-z Wavelet analysis of the shaft order perturbation and stall inception in an axial compressor [Elektronische Daten] [Xiang He, Hongwei Ma, Jun Zhang, Wei Wei] An experiment was carried out in a low-speed large-scale axial-compressor. Dynamic pressure signals were measured and analyzed with a wavelet transform. At all stable operating condition, a shaft order perturbation was observed from the dynamic pressure signals and wavelet power spectrums. By measuring the tip clearance, blade pitches and blade thickness distributions, a rotor asymmetry was identified in this compressor, which is strongly linked to the shaft order perturbation. Modal wave appears at the near-stall operating point. The propagation speed of the modal wave is about 20% rotating speed. At the peak of the modal wave, the intensity of the shaft-order-perturbation increases obviously, while it decays very fast at the trough of modal wave. By throttling the compressor, modal stall occurs in several seconds and only one stall-cell was detected. The stall cell grows smoothly out of the modal wave and its propagation speed is increased to 30% rotor speed. In several revolutions before stall, the intensity of the modal wave is increasing and a shaft order perturbation produced by modal-wave grows into stall inception which indicate stall onset but not trigger stall. Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag Berlin Heidelberg, 2013 axial compressor nationallicence stall inception nationallicence modal wave nationallicence wavelet analysis nationallicence shaft order perturbation nationallicence He Xiang National Key Laboratory of Science and Technology on aero-Engines, School of Energy and Power Engineering, Beihang University, 100191, Beijing, China aut Ma Hongwei National Key Laboratory of Science and Technology on aero-Engines, School of Energy and Power Engineering, Beihang University, 100191, Beijing, China aut Zhang Jun National Key Laboratory of Science and Technology on aero-Engines, School of Energy and Power Engineering, Beihang University, 100191, Beijing, China aut Wei Wei National Key Laboratory of Science and Technology on aero-Engines, School of Energy and Power Engineering, Beihang University, 100191, Beijing, China aut Journal of Thermal Science SP Science Press 22/3(2013-06-01), 223-228 1003-2169 22:3<223 2013 22 11630 https://doi.org/10.1007/s11630-013-0616-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11630-013-0616-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- He Xiang National Key Laboratory of Science and Technology on aero-Engines, School of Energy and Power Engineering, Beihang University, 100191, Beijing, China aut NATIONALLICENCE 700 1- Ma Hongwei National Key Laboratory of Science and Technology on aero-Engines, School of Energy and Power Engineering, Beihang University, 100191, Beijing, China aut NATIONALLICENCE 700 1- Zhang Jun National Key Laboratory of Science and Technology on aero-Engines, School of Energy and Power Engineering, Beihang University, 100191, Beijing, China aut NATIONALLICENCE 700 1- Wei Wei National Key Laboratory of Science and Technology on aero-Engines, School of Energy and Power Engineering, Beihang University, 100191, Beijing, China aut NATIONALLICENCE 773 0- Journal of Thermal Science SP Science Press 22/3(2013-06-01), 223-228 1003-2169 22:3<223 2013 22 11630 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer