Abstract: Recent developments in turbomachinery design require an improved prediction accuracy of blade vibrations to maintain safe operations. This article aims to investigate the accuracy of numerical aeroelastic approaches for ...

Abstract: The design process of turbomachinery is often constraint by aeroelastic phenomena. The design choices are limited by possible structural failure, which can be caused by high vibration amplitudes. In particular, damping has ...

Abstract: Geometrical variations occur in highly loaded turbine blades due to operation and regeneration. To determine the influence of such regenerationinduced variances of turbine blades on the aerodynamic excitation, a typical ...

Abstract: Due to the legislative efforts of promoting renewable energy sources, electricity from these sources is preferentially fed into the electrical grid. This requires more frequent partand lowload operation of peakand even of ...

Abstract: During the last decades, riblets have shown a potential for viscous drag reduction in turbulent boundary layers. Several investigations and measurements of skinfriction in the boundary layer over flat plates and on ...

Abstract: An empirical riblet model for manufactured V-shaped and trapezoidal riblets which is suitable for turbomachinery application is presented. The implementation of the riblet effect employs a correlation-based correction for ...

Abstract: The current design of lowpressure turbines (LPTs) with steadyblowing vortex generating jets (VGJs) uses steady computational fluid dynamics (CFD). The present work aims to support this design approach by proposing a new ...

Abstract: Aerodynamic damping is the key parameter to determine the stability of vibrating blade rows in turbomachinery design. Both, the assessments of flutter and forced response vibrations need an accurate estimate of the aerodynamic ...

Abstract: Steady blowing vortex generating jets (VGJ) on highlyloaded lowpressure turbine profiles have shown to be a promising way to decrease total pressure losses at low Reynoldsnumbers by reducing laminar separation. In the ...

Abstract: A significant challenge in improving the regeneration process of jet engines is the reduction of engine down-time during inspection. As such, early defect detection without engine disassembly will speed up the regeneration ...