Review of unsteady aerodynamic methods for turbomachinery aeroelastic and aeroacoustic applications

摘要: Introduction T HE unsteady aerodynamic analyses intended for turbomachinery aeroelastic and aeroacoustic predictions must be applicable over wide ranges of blade-row geometries operating conditions excitation modes frequencies. Also, because the large number controlling parameters involved, there is a stringent requirement computational efficiency. To date these requirements have been met only to limited extent. As result, design are, most part, still based on classical linearized developed in early 1970s. During past decade, significant advances prediction capabilities achieved. In particular, researchers efficient that account effects important features, such as real blade geometry, mean loading, operation at transonic Mach numbers, response blading imposed structural external excitations. The improvements physical modeling linearizations allow are motivating their current implementation into systems. considerable progress has made developing time-accurate Euler Navier-Stokes simulations nonlinear flows through rows. Although not yet suitable use, offer opportunities an improved understanding processes associated with vibration noise generation. These recent theoretical reviewed present survey.