Coupled mode analysis of unsteady multistage flows in turbomachinery

Conference Paper

A `coupled mode' analysis is useful in predicting the unsteady aerodynamic response of vibrating multistage turbomachine blades. Using this approach, the coupling between the blade rows is modeled using a subset of spinning modes. The blade rows are represented by reflection and transmission coefficients which describe how spinning modes interact with and are scattered by, a given blade row. These coefficients are calculated using a linearized full potential flow model together with rapid distortion theory to account for incident vortical gusts.

Duke Authors

Cited Authors

  • Silkowski, PD; Hall, KC

Published Date

  • December 1, 1997

Published In

International Standard Serial Number (ISSN)

  • 0402-1215

Citation Source

  • Scopus