Numerical solutions for unsteady subsonic vortical flows around loaded cascades

Journal Article · Fri Oct 01 00:00:00 EDT 1993 · Journal of Turbomachinery; (United States)

DOI:https://doi.org/10.1115/1.2929319· OSTI ID:5746408

Fang, J; Atassi, H M ^[1]

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1. Univ. of Notre Dame, IN (United States). Dept. of Aerospace and Mechanical Engineering

A frequency domain linearized unsteady aerodynamic analysis is presented for three-dimensional unsteady vortical flows around a cascade of loaded airfoils. The analysis fully accounts for the distortion of the impinging vortical disturbances by the mean flow. The entire unsteady flow field is calculated in response to upstream three-dimensional harmonic disturbances. Numerical results are presented for two standard cascade configurations representing turbine and compressor bladings for a reduced frequency range from 0.1 to 5. Results show that the upstream gust conditions and blade sweep strongly affect the unsteady blade response.

• OSTI ID: 5746408
• Journal Information: Journal of Turbomachinery; (United States), Journal Name: Journal of Turbomachinery; (United States) Vol. 115:4; ISSN JOTUEI; ISSN 0889-504X
• Country of Publication: United States
• Language: English

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