Application of the Shannon-Kotelnik theorem on the vortex structures identification

27th IAHR Symposium on Hydraulic Machinery and Systems

Pochylý, F.^1 ; Krausová, H.^1 ; Fialová, S.^1

Brno University of Technology, Czech Republic^1

关键词: Self excited oscillation;    Shannon;    Unsteady vector fields;    Vortex structures;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/22/2/022023/pdf
DOI  :  10.1088/1755-1315/22/2/022023

来源: IOP

【 摘 要 】

This paper presents a decomposition of unsteady vector fields, based on the principle of Shannon-Kotelnik theorem. The decomposition is derived from the Fourier transform of the Kotelnik series. The method can be used for the analysis of both forced and self-excited oscillation.