... is taken into account. ground vortex unsteady distortion numerical forced response Proceedings of ASME Turbo Expo 2022 Turbomachinery Technical Conference and Exposition GT2022 June 13-17, 2022, Rotterdam, The Netherlands GT2022-82149 INVESTIGATIONS OF THE UNSTEADY AERODYNAMIC CHARACTERISTICS...

... Abstract This paper continues previous research by the current authors in a series of papers describing the impact of multi-row interaction on the forced response behavior of embedded compressor rotors. Specifically, this work dives into an aspect of the embedded rotor forcing that has been...

... case with the downstream rotor in the computational model yielded the most accurate prediction of the blade response supporting earlier conclusions by the same authors that a downstream row was essential to predict the forcing function accurately. compressor forced response multi-row mistuning...

...Proceedings of ASME Turbo Expo 2022 Turbomachinery Technical Conference and Exposition GT2022 June 13-17, 2022, Rotterdam, The Netherlands GT2022-79761 Effect of system mode and structural damping perturbation on the mistuned forced response and aerodynamic damping of embedded compressor rotors...

... Abstract Intentional mistuning is employed for a last stage turbine wheel featuring 51 blades to alleviate both the flutter susceptibility and maximum forced response. Primarily, operations at nominal speed under part-load conditions may cause unfavorable flow conditions facilitating flow...

... and grand challenges are also given. aero-engine instability damping forced response system identification Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual, Online GT2021-60864 INSTABILITIES EVERYWHERE! HARD PROBLEMS IN AERO...

... Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual, Online GT2021-59040 PRACTICAL METHOD FOR BURNER STAGING TURBINE FORCED RESPONSE EVALUATION Nikola Kafedzhiyski Maria Mayorca Siemens Energy AB Siemens Energy AB Finspång, Sweden...

... Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual, Online GT2021-58779 INFLUENCE OF STATOR HUB CAVITIES ON THE FORCED RESPONSE BEHAVIOUR OF AN EMBEDDED COMPRESSOR ROTOR Shreyas Hegde1, Robert Kielb1, Laith Zori2, Rubens...

...Abstract Abstract This paper focusses on predicting the mistuned forced response behavior of an embedded compressor rotor blade row in a 3.5 stage axial compressor. The authors in previous papers studied the multi-row influence on the forcing function for multiple operating conditions...

...Abstract Abstract The last stage bladed disk of a steam turbine is analyzed with respect to both flutter susceptibility and limitation of forced response. Due to the lack of variable stator vanes unfavorable flow conditions may occur which can lead to flow separation in some circumstances...

...Abstract Abstract This paper presents experimental and numerical investigation of mistuned forced responses of an integrally bladed disk with full set of underplatform dampers (UPDs). This research aims at providing: 1. An experimental benchmark for nonlinear dynamics of a mistuned bladed...

...Abstract Abstract This paper focuses on the impact of multi-row interaction on the forced response behavior of an embedded compressor rotor at higher order modes. The authors in previous papers have discussed about the multi-row influence at the torsional mode resonant crossing and this paper...

... and vibrations was highlighted. Keywords: Low Pressure Turbines; Inlet Distortion; Aeroelasticity; Unsteady Aerodynamics; Forced Response; Rotor Vibrations; Strain Gauges. NOMENCLATURE Abbreviations 5HP 5 Hole Probe BPF Blade Passing Frequency BPP Blade Passing Period EO Engine Order EF Eigenfrequency FRAPP Fast...

... and integrated blisks are common in engine designs. So, fan blades are prone to serious vibrations such as flutter and forced response, which may lead to high-cycle fatigue, and further cause structural failure. The aeromechanical characteristics of a transonic fan (NASA rotor67) in presence of a s-shaped...

... measured by the strain gauges and blade tip tangential displacement obtained through tip-timing measurements is performed by using realistic finite element models of the blisk. Key words: tip-timing method, travelling wave, mode identification, Coriolis effect, bladed disk, forced response 1. INTRODUCTION...

... 11 01 2011 The study intends to simulate the process of the blade tip amplitude calculation by the tip-timing method. An attention is focused on tip-timing measurements for detection of a cracked blade from the bladed disk forced response. The cracked blade is considered within...

... 1 Copyright © 2010 by ASME Proceedings of ASME Turbo Expo 2010: Power for Land, Sea and Air GT2010 June 14-18, 2010, Glasgow, UK GT2010-23610 ON FORCED RESPONSE OF A ROTATING INTEGRALLY BLADED DISK: PREDICTIONS AND EXPERIMENTS Claude Gibert Laboratory of Tribology and System Dynamics UMR CNRS 5513...

... of rotational speed (−5% to +10%) did not show remarkable changes in the mode excitability of the investigated rotor. excitability forced response mode shape unsteady flow computation stator-rotor interaction high-pressure turbine design Proceedings of ASME Turbo Expo 2002 June 3 6, 2002...

...: Mistuning, blade vibration, reduced order model, forced response, modeling. GT-2002-30425 G FOR A SINGLE FAMILY OF MODES J.H. Griffin Carnegie Mellon University Department of Mechanical Engineering Pittsburgh, Pennsylvania 15213 USA 412-268-3860, 412-268-3348 jg9h@andrew.cmu.edu of a real bladed disk...

... 05 02 2009 A method is presented for obtaining maximum bladed disk forced response from distortion of a structural mode. It is shown that maximum response from mode distortion in a bladed disk occurs when the harmonic components of a distorted mode superimpose in a certain manner...