Abstract

A fluid-structure interaction analysis is developed to study wake-generated turbomachine blade row unsteady aerodynamics and predict the resulting vibratory stress. This is accomplished by incorporating the Baldwin-Lomax turbulence model into TAMALE3D, a 3D multi-material finite element code employing an Arbitrary Lagrangian Eulerian (ALE) solver. This viscous TAM-ALE3D model is then utilized to simulate fluid-structure interactions in the Purdue Transonic Compressor. First, the viscous analysis is experimentally validated by simulating the rotor-stator interaction unsteady aerodynamics at the part-speed condition at which detailed experimental data are available. The resonant response of the stator vanes to the unsteady aerodynamic excitation is then predicted by performing a full fluid-structure interaction simulation.

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