Effect of Wind Tunnel Acoustic Modes on Linear Oscillating Cascade Aerodynamics | Zendy

Daniel H. Buffum | Zendy; Sanford Fleeter | Zendy

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Effect of Wind Tunnel Acoustic Modes on Linear Oscillating Cascade Aerodynamics

Author(s) -

Daniel H. Buffum,

Sanford Fleeter

Publication year - 1994

Publication title -

journal of turbomachinery

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.972

H-Index - 112

eISSN - 1528-8900

pISSN - 0889-504X

DOI - 10.1115/1.2929440

Subject(s) - airfoil , cascade , aerodynamics , wind tunnel , oscillation (cell signaling) , mechanics , reduced frequency , acoustics , physics , pressure coefficient , engineering , reynolds number , biology , genetics , turbulence , chemical engineering

The aerodynamics of a biconvex airfoil cascade oscillating in torsion is investigated using the unsteady aerodynamic influence coefficient technique. For subsonic flow and reduced frequencies as large as 0.9, airfoil surface unsteady pressures resulting from oscillation of one of the airfoils are measured using flush-mounted high- frequency-response pressure transducers. The influence coefficient data are examined in detail and then used to predict the unsteady aerodynamics of a cascade oscillating at various interblade phase angles. These results are correlated with experimental data obtained in the traveling-wave mode of oscillation and linearized analysis predictions

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