0
Research Papers

Fluid–Structure Interaction Using a Modal Approach

[+] Author and Article Information
F. Debrabandere

 Numflo, B-7000 Mons, Belgiumfrancois.debrabandere@numflo.eu

B. Tartinville

Numeca International, B-1170 Brussels, Belgiumbenoit.tartinville@numeca.be

Ch. Hirsch

Numeca International, B-1170 Brussels, Belgiumcharles.hirsch@numeca.be

G. Coussement

 Fluid-Machines Department, University of Mons, B-7000 Mons, Belgiumgregory.coussement@umons.ac.be

J. Turbomach 134(5), 051043 (Jun 15, 2012) (6 pages) doi:10.1115/1.4004859 History: Received July 11, 2011; Revised August 02, 2011; Published June 15, 2012; Online June 15, 2012

A new method for fluid‐structure interaction (FSI) predictions is here introduced, based on a reduced-order model (ROM) for the structure, described by its mode shapes and natural frequencies. A linear structure is assumed as well as Rayleigh damping. A two-way coupling between the fluid and the structure is ensured by a loosely coupling staggered approach: the aerodynamic loads computed by the flow solver are used to determine the deformations from the modal equations, which are sent back to the flow solver. The method is first applied to a clamped beam oscillating under the effect of von Karman vortices. The results are compared to a full-order model. Then a flutter application is considered on the AGARD wing 445.6. Finally, the modal approach is applied to the aeroelastic behavior of an axial compressor stage. The influence of passing rotor blade wakes on the downstream stator blades is investigated.

Copyright © 2012 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Comparison of numerical results and analytical solution of Eq. 4

Grahic Jump Location
Figure 2

Numerical error induced by the resolution of Eq. 4 and influence of time step size

Grahic Jump Location
Figure 3

Vortex-induced vibration beam

Grahic Jump Location
Figure 4

Instantaneous deformation of the beam at t = 9.8 s

Grahic Jump Location
Figure 5

Tip motion of the beam

Grahic Jump Location
Figure 6

Generalized displacement of the beam

Grahic Jump Location
Figure 7

Mesh used for the AGARD wing 445.6

Grahic Jump Location
Figure 8

Tip motion in lift direction at flutter limit at Mach 0.5

Grahic Jump Location
Figure 9

Flutter speed index of the AGARD wing 445.6

Grahic Jump Location
Figure 10

Frequency ratio of the AGARD wing 445.6

Grahic Jump Location
Figure 11

Geometry and mesh used for the compressor stage

Grahic Jump Location
Figure 12

Absolute Mach number at midspan

Grahic Jump Location
Figure 13

Tip deformation at trailing edges of the stator

Grahic Jump Location
Figure 14

Deformation of stator blades at t = 3.75 × 10−4 s

Grahic Jump Location
Figure 15

Deformation of stator blades at t = 8.9 × 10−4 s

Grahic Jump Location
Figure 16

Fourier transform of the tip motion of the first stator blade

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In