The effect of the finite extent of linear cascades on the unsteady pressure distribution of vibrating blades is assessed by means of a numerical study. The span of a reference cascade made up of flat plates has been changed to investigate its influence on the computed influence coefficients. It is concluded that the number of passages required to match a solution obtained with a traveling-wave mode strongly depends on the interblade phase angle under consideration and that existing linear vibrating cascade facilities have a marginal resolution to accurately match CFD analysis that assume that the blade is vibrating in a traveling-wave mode.
A Numerical Investigation on the Influence of Lateral Boundaries in Linear Vibrating Cascades
Contributed by the International Gas Turbine Institute and presented at the International Gas Turbine and Aeroengine Congress and Exhibition, Amsterdam, The Netherlands, June 3–6, 2002. Manuscript received by the IGTI June 11, 2001. Paper No. 2002-GT-30451. Review Chair: E. Benvenuti.
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Corral, R., and Gisbert, F. (August 27, 2003). "A Numerical Investigation on the Influence of Lateral Boundaries in Linear Vibrating Cascades ." ASME. J. Turbomach. July 2003; 125(3): 433–441. https://doi.org/10.1115/1.1575255
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