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Impeller Flow Field Laser Velocimeter Measurements
Published 1996-01-01“…Development of Computational Fluid Dynamics (CFD) computer codes for complex turbomachinery affords a complete three-dimensional (3-D) flow field description. …”
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Propulsion aéronautique : études expérimentales de la combustion
Published 2024-11-01“…Apart from light aviation, the majority of aeronautical propulsion relies on the implementation of turbomachinery, whose energy and environmental performances are continuously improving. …”
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Model and Stability Analysis of a Flexible Bladed Rotor
Published 2006-01-01“…A stability detection method, bringing coalescence and loci separation phenomena to the fore, in case of an asymmetric rotor, is undertaken in order to determine a parametric domain where turbomachinery cannot encounter damage. Finally, extensive parametric studies including the length and the stagger angle of the blades as well as their flexibility are presented in order to obtain robust criteria for stable and unstable areas prediction.…”
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Identification Methods and Test Results for Tilting Pad and Fixed Geometry Journal Bearing Dynamic Coefficients – A Review
Published 2009-01-01“…Fluid film journal bearings (FFBs) are used to support high-speed rotors in turbomachinery which often operate above the rotor first bending critical speed. …”
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Control Application of Piezoelectric Materials to Aeroelastic Self-Excited Vibrations
Published 2014-01-01“…A method for application of piezoelectric materials to aeroelasticity of turbomachinery blades is presented. The governing differential equations of an overhung beam are established. …”
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Numerical Simulation of the Transitional and Unsteady Flow through a Low Pressure Turbine
Published 2007-01-01Get full text
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Aeroelastic Vibrations and Stability in Cyclic Symmetric Domains
Published 2000-01-01“…The aerodynamic load is then derived from a harmonic analysis of the fluid flow extending to turbomachinery as in the case of aeroplane wing. In this way, aerodynamic forces may be obtained as general as required, depending on successive time derivatives of degrees of freedom in addition to themselves. …”
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The Three-Dimensional Velocity Distribution of Wide Gap Taylor-Couette Flow Modelled by CFD
Published 2016-01-01“…This is likely to cause unwanted heat transfer on the surface in high torque turbomachinery applications. Secondly, the radial inflow at the axial end-wall boundaries is likely to promote the transport of debris to the junction between the end-collar and the rotating cylinder, causing the build-up of fouling in the seal.…”
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Detection of Emerging Faults on Industrial Gas Turbines Using Extended Gaussian Mixture Models
Published 2017-01-01Get full text
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Interaction between Uneven Cavity Length and Shaft Vibration at the Inception of Synchronous Rotating Cavitation
Published 2008-01-01“…Asymmetric cavitation is known as one type of the sources of cavitation induced vibration in turbomachinery. Cavity lengths are unequal on each blade under condition of synchronous rotating cavitation, which causes synchronous shaft vibration. …”
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Fluid–structure interaction in a follow-up study of arterio-venous fistula maturation
Published 2024-11-01Get full text
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Numerical Analyses of Static Characteristics of Liquid Annular Seals Based on 2D LBM-LES Model
Published 2021-01-01“…Static characteristics and leakage flow rates of liquid annular seals have great influences on the hydraulic efficiency of turbomachinery. In this paper, a two-dimensional (2D) mathematical model for predicting the leakage flow rates and static characteristics of liquid seal is established, based on the lattice Boltzmann method (LBM) combined with the D2G9 velocity model for incompressible fluid and large eddy simulation (LES) turbulence model, in which the transformation equation of reference pressure is developed with the Bernoulli equation. …”
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Synchronous Vibration Parameters Identification of Variable Rotating Speed Blades Based on New Improved Two-Parameter Method without OPR Sensor
Published 2021-01-01“…Blade tip-timing is one of the most effective methods for blade vibration parameters identification of turbomachinery. Once-per revolution (OPR) sensor is usually used to determine the rotating speed and as a time reference. …”
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Numerical Analysis of Turbulent Combustion in a Model Swirl Gas Turbine Combustor
Published 2016-01-01Get full text
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Study on the flow field and structural stress field of the primary retarder considering the throttling characteristics of the valve
Published 2025-01-01“…The research method of this paper can provide reference for the numerical study of turbomachinery.…”
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Deep learning modeling of manufacturing and build variations on multistage axial compressors aerodynamics
Published 2025-01-01“…However, due to the highly complex, turbulent, and three-dimensional flows, they have not yet been proven usable for turbomachinery applications. Multistage axial compressors for gas turbine applications represent a remarkably challenging case, due to the high-dimensionality of the regression of the flow field from geometrical and operational variables. …”
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Nonlinear Dynamic Behaviors of Rotated Blades with Small Breathing Cracks Based on Vibration Power Flow Analysis
Published 2016-01-01“…Rotated blades are key mechanical components in turbomachinery and high cycle fatigues often induce blade cracks. …”
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