A circulant-matrix-based hybrid optical flow method for PIV measurement with large displacement

The accurate measurement of fluid flows with large velocity gradients and a high velocity range, such as vortex flow and jet flow, is still paramount and challenging in fluid dynamics research. Particle image velocimetry (PIV) is a well-established experimental technique for determining fluid veloci...

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Veröffentlicht in:	Experiments in fluids 2021-11, Vol.62 (11), Article 233
Hauptverfasser:	Ouyang, Zhenxing, Yang, Hua, Huang, Yongan, Zhang, Qinghu, Yin, Zhouping
Format:	Artikel
Sprache:	eng
Schlagworte:	Correlation Engineering Engineering Fluid Dynamics Engineering Thermodynamics Fluid dynamics Fluid flow Fluid- and Aerodynamics Heat and Mass Transfer Interrogation Interrogation window Jet flow Optical flow (image analysis) Particle image velocimetry Penalty function Regularization Research Article Tracer particles Turbulent flow Velocity Velocity distribution Velocity gradient Weight
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