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Time-linearized Navier-Stokes analysis of stall flutter

Publication ,  Journal Article
Clark William, S; Hall Kenneth, C
Published in: Journal of Turbomachinery, Transactions of the ASME
2000

A computational method for predicting unsteady viscous flow through two-dimensional cascades accurately and efficiently is presented. The method is intended to predict the onset of the aeroelastic phenomenon of stall flutter. In stall flutter, viscous effects significantly impact the aeroelastic stability of a cascade. In the present effort, the unsteady flow is modeled using a time-linearized Navier-Stokes analysis. Thus, the unsteady flow field is decomposed into a nonlinear spatially varying mean flow plus a small-perturbation harmonically varying unsteady flow. The resulting equations that govern the perturbation flow are linear, variable coefficient partial differential equations. These equations are discretized on a deforming, multiblock, computational mesh and solved using a finite-volume Lax-Wendroff integration scheme. Numerical modeling issues relevant to the development of the unsteady aerodynamic analysis, including turbulence modeling, are discussed. Results from the present method are compared to experimental stall flutter data, and to a nonlinear time-domain Navier-Stokes analysis. The results presented demonstrate the ability of the present time-linearized analysis to model accurately the unsteady aerodynamics associated with turbomachinery stall flutter.

Duke Scholars

Published In

Journal of Turbomachinery, Transactions of the ASME

DOI

Publication Date

2000

Volume

122

Issue

3

Start / End Page

467 / 476

Related Subject Headings

  • Mechanical Engineering & Transports
  • 4012 Fluid mechanics and thermal engineering
  • 4001 Aerospace engineering
  • 0913 Mechanical Engineering
  • 0901 Aerospace Engineering
 

Citation

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MLA
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Clark William, S., & Hall Kenneth, C. (2000). Time-linearized Navier-Stokes analysis of stall flutter. Journal of Turbomachinery, Transactions of the ASME, 122(3), 467–476. https://doi.org/10.1115/1.1303073
Clark William, S., and C. Hall Kenneth. “Time-linearized Navier-Stokes analysis of stall flutter.” Journal of Turbomachinery, Transactions of the ASME 122, no. 3 (2000): 467–76. https://doi.org/10.1115/1.1303073.
Clark William S, Hall Kenneth C. Time-linearized Navier-Stokes analysis of stall flutter. Journal of Turbomachinery, Transactions of the ASME. 2000;122(3):467–76.
Clark William, S., and C. Hall Kenneth. “Time-linearized Navier-Stokes analysis of stall flutter.” Journal of Turbomachinery, Transactions of the ASME, vol. 122, no. 3, 2000, pp. 467–76. Manual, doi:10.1115/1.1303073.
Clark William S, Hall Kenneth C. Time-linearized Navier-Stokes analysis of stall flutter. Journal of Turbomachinery, Transactions of the ASME. 2000;122(3):467–476.

Published In

Journal of Turbomachinery, Transactions of the ASME

DOI

Publication Date

2000

Volume

122

Issue

3

Start / End Page

467 / 476

Related Subject Headings

  • Mechanical Engineering & Transports
  • 4012 Fluid mechanics and thermal engineering
  • 4001 Aerospace engineering
  • 0913 Mechanical Engineering
  • 0901 Aerospace Engineering