Abstract: This paper reports the results of computational studies of the effect of combustor exit temperature distortions on low engine order (LEO) forced response of a high pressure turbine (HPT). Forced response of this kind occurs ...

Abstract: Discrepancies between rig tests and numerical predictions of the flutter boundary for fan blades are usually attributed to the deficiency of computational fluid dynamics (CFD) models for resolving flow at off-design ...

Abstract: The aim of this paper is to introduce design modifications that can be made to improve the flutter stability of a fan blade. A rig fan blade, which suffered flutter in the part-speed range and for which good quality measured ...

Abstract: Heat exchangers are frequently used in aero-engines and are known to significantly affect the surrounding steady and unsteady flow. In certain applications, they may thereby also influence the aeroelastic stability of ...

Abstract: Nonsynchronous vibrations (NSV) occurring near the stall boundary pose a major challenge to the design of safe and efficient compressors and fans. NSV occurs when aerodynamic disturbances which develop close to the aerodynamic ...

Abstract: The growing pressure to reduce fuel consumption and cut emissions has triggered renewed interest in contrarotating open rotor (CROR) technologies. One of their potential issues is selfexcited or forced vibration of the ...

Abstract: Reynolds-averaged Navier–Stokes (RANS) equations are employed for aerodynamic and aeroelastic modeling in axial compressors. Their solutions are highly dependent on the turbulence models for closure. The main objective of ...

Abstract: The formation of a ground vortex and its ingestion into an aeroengine intake under crosswind conditions play a significant role in the aerodynamic excitation of the fan. Using steady and unsteady numerical simulations, an ...