Unsteady aerodynamic analysis of subsonic oscillating cascade

Journal Article · Fri Jul 01 04:00:00 EDT 1994 · Journal of Turbomachinery; (United States)

DOI:https://doi.org/10.1115/1.2929439· OSTI ID:7056340

Chen, S H; Eastland, A H; Jackson, E D ^[1]

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1. Rockwell International Corp., Canoga Park, CA (United States). Rocketdyne Div.

This paper describes the development of the source-doublet-based potential paneling method for oscillating cascade unsteady aerodynamic load predictions. By using the integral influence coefficient method and by using the interblade phase angles, the unsteady loads on an oscillating cascade can be accurately predicted at a minimum cost. As the grids are placed only on the blade surfaces, the blades are allowed to vibrate without grid deformation problems. Four notable subsonic oscillating cascade test cases that cover most important parameters, e.g., blade geometry, interblade phase angle, flow coefficient, flow speed, frequency, etc., are studied in this paper. The agreement between the present solutions and other numerical/experimental results demonstrates the robustness of the present model. Applicability of the method for realistic compressible flow cascades is also discussed.

• OSTI ID: 7056340
• Journal Information: Journal of Turbomachinery; (United States), Journal Name: Journal of Turbomachinery; (United States) Vol. 116:3; ISSN JOTUEI; ISSN 0889-504X
• Country of Publication: United States
• Language: English

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