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Numerical simulation and hydrodynamic visualization of transient viscous flow around an oscillating aerofoil
Author(s) -
Daube O.,
Phuoc L. Ta,
Dulieu A.,
Coutanceau M.,
Ohmi K.,
Texier A.
Publication year - 1989
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.1650090803
Subject(s) - airfoil , reynolds number , flow visualization , vorticity , mechanics , visualization , computer simulation , stall (fluid mechanics) , amplitude , stream function , mathematics , numerical analysis , flow (mathematics) , classical mechanics , physics , vortex , mathematical analysis , turbulence , engineering , optics , mechanical engineering
Unsteady viscous flow around a large‐amplitude and high‐frequency oscillating aerofoil is examined in this paper by numerical simulation and experimental visualization. The numerical method is based on the combination of a fourth‐order Hermitian finite difference scheme for the stream function equation and a classical second‐order scheme to solve the vorticity transport equation. Experiments are carried out by a traditional visualization method using solid tracers suspended in water. The comparison between numerical and experimental results is found to be satisfactory. Time evolutions of the flow structure are presented for Reynolds numbers of 3 × 10 3 and 10 4 . The influence of the amplitude and frequency of the oscillating motion on the dynamic stall is analysed.