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RISLinearized Unsteady Viscous Turbomachinery Flows Using Hybrid Grids
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The paper describes the theory and the numerical implementation of a three-dimensional finite volume scheme for the solution of the linearized, unsteady Favre-averaged Navier–Stokes equations for ...
A Survey of Blade Tip-Timing Measurement Techniques for Turbomachinery Vibration
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper aims at providing a comparative survey of current analysis methods for the interpretation of vibration data measured at turbomachinery rotor blade tips using optical laser probes. The ...
Vibration Modes of Packeted Bladed Disks
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents the results of investigating the vibrational behavior of turbine blades when grouped into packets. Two methods of analysis based on substructuring via receptance coupling have ...
Fatigue Life Prediction Using Frequency Response Functions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a method for fatigue life prediction of engineering components subjected to dynamic loads. It is based on the determination of the nominal stress at the crack position using ...
Unsteady Flow and Aeroelasticity Behavior of Aeroengine Core Compressors During Rotating Stall and Surge
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper will focus on two core-compressor instabilities, namely, rotating stall and surge. Using a 3D viscous time-accurate flow representation, the front bladerows of a core compressor were ...
Thermoelastic Modeling of Rotor Response With Shaft Rub
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper studies the effects of shaft rub on a rotating system’s vibration response with emphasis on heat generation at the contact point. A 3D heat transfer code, coupled to a 3D vibration ...
Structural Health Monitoring and Damage Assessment Using Frequency Response Correlation Criteria
Publisher: American Society of Civil Engineers
Abstract: Two frequency response correlation criteria, namely the global shape correlation (GSC) function and the global amplitude correlation (GAC) function, are established tools to quantify the correlation between predictions ...
Harmonic Balance Vibration Analysis of Turbine Blades With Friction Dampers
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Although considerable effort has been devoted to the formulation of predictive models of friction damper behavior in turbomachinery applications, especially for turbine blades, the problem is far ...
Multibladerow Forced Response Modeling in Axial-Flow Core Compressors
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper describes the formulation and application of an advanced numerical model for the simulation of blade-passing and low-engine order forced response in turbomachinery core compressors. The ...
Aeroelasticity Analysis of Air-Riding Seals for Aero-Engine Applications
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents the results of a feasibility study on air-riding seal aeroelasticity for large-diameter aero-engines. A literature survey of previous seal studies revealed a significant amount ...