Finite Element Simulation of Blade Row Viscous Interactions: Vane Vibratory Stress Prediction

Abstract

DOI: 10.2514/1.17187 A fluid-structure interaction analysis is developed to study wake-generated turbomachine blade row unsteady aerodynamics and to predict the resulting vibratory stress. This is accomplished by incorporating the Baldwin– Lomax turbulence model into TAM-ALE3D, a 3-D multimaterial finite element code employing an arbitrary LagrangianEuleriansolver.ThisviscousTAM-ALE3Dmodelisthenutilizedtosimulate fluid-structureinteractions inthe PurdueTransonicCompressor. First, theviscousanalysis isexperimentally validated bysimulating therotorstator 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.