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Numerical model of the onset of stall flutter in cascades

Publication ,  Conference
Clark, WS; Hall, KC
Published in: American Society of Mechanical Engineers (Paper)
January 1, 1995

In this paper, we present a computational fluid dynamic model of the unsteady flow associated with the onset of stall flutter in turbomachinery cascades. The unsteady flow is modeled using the laminar Navier-Stokes equations. We assume that the unsteadiness in the flow is a small harmonic disturbance about the mean or steady flow. Therefore, the unsteady flow is governed by a small-disturbance form of the Navier-Stokes equations. These linear variable coefficient equations are discretized on a deforming computational grid and solved efficiently using a multiple-grid Lax-Wendroff scheme. A number of numerical examples are presented which demonstrate the destabilizing influence of viscosity on the aeroelastic stability of airfoils in cascade, especially for torsional modes of blade vibration.

Duke Scholars

Published In

American Society of Mechanical Engineers (Paper)

ISSN

0402-1215

Publication Date

January 1, 1995
 

Citation

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MLA
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Clark, W. S., & Hall, K. C. (1995). Numerical model of the onset of stall flutter in cascades. In American Society of Mechanical Engineers (Paper).
Clark, W. S., and K. C. Hall. “Numerical model of the onset of stall flutter in cascades.” In American Society of Mechanical Engineers (Paper), 1995.
Clark WS, Hall KC. Numerical model of the onset of stall flutter in cascades. In: American Society of Mechanical Engineers (Paper). 1995.
Clark, W. S., and K. C. Hall. “Numerical model of the onset of stall flutter in cascades.” American Society of Mechanical Engineers (Paper), 1995.
Clark WS, Hall KC. Numerical model of the onset of stall flutter in cascades. American Society of Mechanical Engineers (Paper). 1995.

Published In

American Society of Mechanical Engineers (Paper)

ISSN

0402-1215

Publication Date

January 1, 1995