@ARTICLE{Zhang_Yancheng_Dynamics_Early,
 author={Zhang, Yancheng and Zhang, Lei and Wang, Cong and Sun, Tengjiao and Li, Z. and Jiang, Dezhi},
 journal={Bulletin of the Polish Academy of Sciences Technical Sciences},
 pages={e154280},
 howpublished={online},
 year={Early Access},
 abstract={Throughout the operational lifecycle of centrifugal pumps, cavitation is an omnipresent phenomenon that frequently leads to cavitation erosion and a decline in hydraulic heads, leading to mechanical failures and substantial damages to the pump assembly. Although the cavitation phenomenon has been widely studied in existing literature, it is still a challenging task for reliable flow dynamics analysis of the centrifugal pumps using the modal order reduction technique. In this study, the modal decomposition and reconstruction of the flow field of a centrifugal pump with considering the cavitation are carried out. The dynamic modal decomposition (DMD) based on the singular value decomposition (SVD) is employed to explore the dynamic behavior of the cavitation flow field by reducing the modal order of the flow field. Then, the modal characteristics of the pump flow field are systematically analyzed. The results demonstrate that the DMD method can improve the accuracy of the order reduction model and reduce the modal reconstruction error, the reconstruction error loss is less than 5%, and the calculation efficiency is significantly enhanced to analyze the pump cavitation flow field. In addition, through comparing the calculation data between the finite element simulation and the DMD reconstructed flow field, it indicates the potential application of the DMD method in investigating the degradation of the flow field due to cavitation, which provides new perspective and solid technique support for centrifugal pump cavitation analysis.},
 type={Article},
 title={Dynamics Analysis on Cavitation Flow Field of Centrifugal Pumps using Modal Order Reduction},
 URL={http://ochroma.man.poznan.pl/Content/134992/PDF/BPASTS-04655-EA.pdf},
 doi={10.24425/bpasts.2025.154280},
 keywords={centrifugal pump, cavitation flow field, modal, analysis, dynamic modal decomposition},
}