This textbook is a collection of technical papers that were presented at the 10th International Symposium on Unsteady Aerodynamics, Aeroacoustics, and Aeroelasticity of Turbomachines held September 8-11, 2003 at Duke University in Durham, North Carolina. The papers represent the latest in state of the art research in the areas of aeroacoustics, aerothermodynamics, computational methods, experimental testing related to flow instabilities, flutter, forced response, multistage, and rotor-stator effects for turbomachinery.
This textbook is a collection of technical papers that were presented at the 10th International Symposium on Unsteady Aerodynamics, Aeroacoustics, and Aeroelasticity of Turbomachines held September 8-11, 2003 at Duke University in Durham, North Carolina. The papers represent the latest in state of the art research in the areas of aeroacoustics, aerothermodynamics, computational methods, experimental testing related to flow instabilities, flutter, forced response, multistage, and rotor-stator effects for turbomachinery.
Flutter.- FLUTTER BOUNDARIES FOR PAIRS OF LOW PRESSURE TURBINE BLADES.- INFLUENCE OF A VIBRATION AMPLITUDE DISTRIBUTION ON THE AERODYNAMIC STABILITY OF A LOW-PRESSURE TURBINE SECTORED VANE.- A METHOD TO ASSESS FLUTTER STABILITY OF COMPLEX MODES.- FLUTTER DESIGN OF LOWPRESSURE TURBINE BLADES WITH CYCLIC SYMMETRIC MODES.- EXPERIMENTAL AND NUMERICAL INVESTIGATION OF 2D PALISADE FLUTTER FOR THE HARMONIC OSCILLATIONS.- POSSIBILITY OF ACTIVE CASCADE FLUTTER CONTROL WITH SMART STRUCTURE IN TRANSONIC FLOWCONDITION.- EXPERIMENTAL FLUTTER INVESTIGATIONS OF AN ANNULAR COMPRESSOR CASCADE: INFLUENCE OF REDUCED FREQUENCY ON STABILITY.- FORCED RESPONSE.- UNSTEADY GUST RESPONSE IN THE FREQUENCY DOMAIN.- AXIAL TURBINE BLADE VIBRATIONS INDUCED BY THE STATOR FLOW.- MISTUNING AND COUPLING EFFECTS IN TURBOMACHINERY BLADINGS.- EVALUATION OF THE PRINCIPLE OF AERODYNAMIC SUPERPOSITION IN FORCED RESPONSE CALCULATIONS.- COMPARISON OF MODELS TO PREDICT LOW ENGINE ORDER EXCITATION IN A HIGH PRESSURE TURBINE STAGE.- EXPERIMENTAL REDUCTION OF TRANSONIC FAN FORCED RESPONSE BY IGV FLOW CONTROL.- MULTISTAGE EFFECTS.- UNSTEADY AERODYNAMIC WORK ON OSCILLATING ANNULAR CASCADES IN COUNTER ROTATION.- STRUCTURE OF UNSTEADY VORTICAL WAKES BEHIND BLADES OF MUTUAL-MOVING ROWS OF AN AXIAL TURBOMACHINE.- THE EFFECT OF MACH NUMBER ON LP TURBINEWAKE-BLADE INTERACTION.- MULTISTAGE COUPLING FOR UNSTEADY FLOWSIN TURBOMACHINERY.- AEROACOUSTICS.- PASSIVE NOISE CONTROL BY VANE LEAN AND SWEEP.- INTERACTION OF ACOUSTIC AND VORTICAL DISTURBANCES WITH AN ANNULAR CASCADE IN A SWIRLING FLOW.- INFLUENCE OF MUTUAL CIRCUMFERENTIAL SHIFT OF STATORS ON THE NOISE GENERATED BY SYSTEM OF ROWS STATOR-ROTOR-STATOR OF THE AXIAL COMPRESSOR.- A FREQUENCY-DOMAIN SOLVER FOR THE NON-LINEAR PROPAGATION AND RADIATION OF FAN NOISE.- FLOW INSTABILITIES.- ANALYSIS OF UNSTEADY CASING PRESSURE MEASUREMENTS DURING SURGE AND ROTATING STALL.- CORE-COMPRESSOR ROTATING STALL SIMULATION WITH A MULTI-BLADEROW MODEL.- PARAMETRIC STUDYOF SURFACE ROUGHNESS ANDWAKE UNSTEADINESS ON A FLAT PLATE WITH LARGE PRESSURE GRADIENT.- BYPASS FLOW PATTERN CHANGES AT TURBO-RAM TRANSIENT OPERATION OF A COMBINED CYCLE ENGINE.- EXPERIMENTAL INVESTIGATION OFWAKE-INDUCED TRANSITION IN A HIGHLY LOADED LINEAR COMPRESSOR CASCADE.- EXPERIMENTAL OFF-DESIGN INVESTIGATION OF UNSTEADY SECONDARY FLOWPHENOMENA IN A THREE-STAGE AXIAL COMPRESSOR AT 100% NOMINAL SPEED.- ANALYSES OF URANS AND LES CAPABILITIES TO PREDICT VORTEX SHEDDING FOR RODS AND TURBINES.- COMPUTATIONAL TECHNIQUES.- FREQUENCY AND TIME DOMAIN FLUID-STRUCTURE COUPLING METHODS FOR TURBOMACHINERIES.- STUDY OF SHOCK MOVEMENT AND UNSTEADY PRESSURE ON 2D GENERIC MODEL.- NUMERICAL UNSTEADY AERODYNAMICS FOR TURBOMACHINERY AEROELASTICITY.- DEVELOPMENT OF AN EFFICIENT AND ROBUST LINEARISED NAVIER-STOKES FLOW SOLVER.- OPTIMIZED DUAL-TIME STEPPING TECHNIQUE FOR TIME-ACCURATE NAVIER-STOKES CALCULATIONS.- EXPERIMENTAL UNSTEADY AERODYNAMICS.- EXPERIMENTAL AND NUMERICAL STUDY OF NONLINEAR INTERACTIONS IN TWO-DIMENSIONAL TRANSONIC NOZZLE FLOW.- INTERACTION BETWEEN SHOCKWAVES AND CASCADED BLADES.- MEASURED AND CALCULATED UNSTEADY PRESSURE FIELD IN A VANELESS DIFFUSER OF A CENTRIFUGAL COMPRESSOR.- DPIV MEASUREMENTS OF THE FLOW FIELD BETWEEN A TRANSONIC ROTOR AND AN UPSTREAM STATOR.- UNSTEADY PRESSURE MEASUREMENT WITH CORRECTION ON TUBING DISTORTION.- AEROTHERMODYNAMICS.- UNSTEADY 3D NAVIER-STOKES CALCULATION OF A FILM-COOLED TURBINE STAGE WITH DISCRETE COOLING HOLE.- ANALYSIS OF UNSTEADY AEROTHERMODYNAMIC EFFECTS IN A TURBINE-COMBUSTOR.- ROTOR STATOR INTERACTION.- STATOR-ROTOR AEROELASTIC INTERACTION FOR THE TURBINE LAST STAGE IN 3D TRANSONIC FLOW.- EFFECTS OF STATOR CLOCKINGINSYSTEMOF ROWS STATOR-ROTOR-STATOROF THE SUBSONICAXIAL COMPRESSOR.- ROTOR-STATOR INTERACTION IN A HIGHLY-LOADED, SINGLE-STAGE, LOW-SPEED AXIAL COMPRESSOR:UNSTEADY MEASUREMENTS IN THE ROTOR RELATIVE FRAME.- TWO-STAGE TURBINE EXPERIMENTAL INVESTIGATIONS OF UNSTEADY STATOR-TO-STATOR INTERACTION.
Flutter.- FLUTTER BOUNDARIES FOR PAIRS OF LOW PRESSURE TURBINE BLADES.- INFLUENCE OF A VIBRATION AMPLITUDE DISTRIBUTION ON THE AERODYNAMIC STABILITY OF A LOW-PRESSURE TURBINE SECTORED VANE.- A METHOD TO ASSESS FLUTTER STABILITY OF COMPLEX MODES.- FLUTTER DESIGN OF LOWPRESSURE TURBINE BLADES WITH CYCLIC SYMMETRIC MODES.- EXPERIMENTAL AND NUMERICAL INVESTIGATION OF 2D PALISADE FLUTTER FOR THE HARMONIC OSCILLATIONS.- POSSIBILITY OF ACTIVE CASCADE FLUTTER CONTROL WITH SMART STRUCTURE IN TRANSONIC FLOWCONDITION.- EXPERIMENTAL FLUTTER INVESTIGATIONS OF AN ANNULAR COMPRESSOR CASCADE: INFLUENCE OF REDUCED FREQUENCY ON STABILITY.- FORCED RESPONSE.- UNSTEADY GUST RESPONSE IN THE FREQUENCY DOMAIN.- AXIAL TURBINE BLADE VIBRATIONS INDUCED BY THE STATOR FLOW.- MISTUNING AND COUPLING EFFECTS IN TURBOMACHINERY BLADINGS.- EVALUATION OF THE PRINCIPLE OF AERODYNAMIC SUPERPOSITION IN FORCED RESPONSE CALCULATIONS.- COMPARISON OF MODELS TO PREDICT LOW ENGINE ORDER EXCITATION IN A HIGH PRESSURE TURBINE STAGE.- EXPERIMENTAL REDUCTION OF TRANSONIC FAN FORCED RESPONSE BY IGV FLOW CONTROL.- MULTISTAGE EFFECTS.- UNSTEADY AERODYNAMIC WORK ON OSCILLATING ANNULAR CASCADES IN COUNTER ROTATION.- STRUCTURE OF UNSTEADY VORTICAL WAKES BEHIND BLADES OF MUTUAL-MOVING ROWS OF AN AXIAL TURBOMACHINE.- THE EFFECT OF MACH NUMBER ON LP TURBINEWAKE-BLADE INTERACTION.- MULTISTAGE COUPLING FOR UNSTEADY FLOWSIN TURBOMACHINERY.- AEROACOUSTICS.- PASSIVE NOISE CONTROL BY VANE LEAN AND SWEEP.- INTERACTION OF ACOUSTIC AND VORTICAL DISTURBANCES WITH AN ANNULAR CASCADE IN A SWIRLING FLOW.- INFLUENCE OF MUTUAL CIRCUMFERENTIAL SHIFT OF STATORS ON THE NOISE GENERATED BY SYSTEM OF ROWS STATOR-ROTOR-STATOR OF THE AXIAL COMPRESSOR.- A FREQUENCY-DOMAIN SOLVER FOR THE NON-LINEAR PROPAGATION AND RADIATION OF FAN NOISE.- FLOW INSTABILITIES.- ANALYSIS OF UNSTEADY CASING PRESSURE MEASUREMENTS DURING SURGE AND ROTATING STALL.- CORE-COMPRESSOR ROTATING STALL SIMULATION WITH A MULTI-BLADEROW MODEL.- PARAMETRIC STUDYOF SURFACE ROUGHNESS ANDWAKE UNSTEADINESS ON A FLAT PLATE WITH LARGE PRESSURE GRADIENT.- BYPASS FLOW PATTERN CHANGES AT TURBO-RAM TRANSIENT OPERATION OF A COMBINED CYCLE ENGINE.- EXPERIMENTAL INVESTIGATION OFWAKE-INDUCED TRANSITION IN A HIGHLY LOADED LINEAR COMPRESSOR CASCADE.- EXPERIMENTAL OFF-DESIGN INVESTIGATION OF UNSTEADY SECONDARY FLOWPHENOMENA IN A THREE-STAGE AXIAL COMPRESSOR AT 100% NOMINAL SPEED.- ANALYSES OF URANS AND LES CAPABILITIES TO PREDICT VORTEX SHEDDING FOR RODS AND TURBINES.- COMPUTATIONAL TECHNIQUES.- FREQUENCY AND TIME DOMAIN FLUID-STRUCTURE COUPLING METHODS FOR TURBOMACHINERIES.- STUDY OF SHOCK MOVEMENT AND UNSTEADY PRESSURE ON 2D GENERIC MODEL.- NUMERICAL UNSTEADY AERODYNAMICS FOR TURBOMACHINERY AEROELASTICITY.- DEVELOPMENT OF AN EFFICIENT AND ROBUST LINEARISED NAVIER-STOKES FLOW SOLVER.- OPTIMIZED DUAL-TIME STEPPING TECHNIQUE FOR TIME-ACCURATE NAVIER-STOKES CALCULATIONS.- EXPERIMENTAL UNSTEADY AERODYNAMICS.- EXPERIMENTAL AND NUMERICAL STUDY OF NONLINEAR INTERACTIONS IN TWO-DIMENSIONAL TRANSONIC NOZZLE FLOW.- INTERACTION BETWEEN SHOCKWAVES AND CASCADED BLADES.- MEASURED AND CALCULATED UNSTEADY PRESSURE FIELD IN A VANELESS DIFFUSER OF A CENTRIFUGAL COMPRESSOR.- DPIV MEASUREMENTS OF THE FLOW FIELD BETWEEN A TRANSONIC ROTOR AND AN UPSTREAM STATOR.- UNSTEADY PRESSURE MEASUREMENT WITH CORRECTION ON TUBING DISTORTION.- AEROTHERMODYNAMICS.- UNSTEADY 3D NAVIER-STOKES CALCULATION OF A FILM-COOLED TURBINE STAGE WITH DISCRETE COOLING HOLE.- ANALYSIS OF UNSTEADY AEROTHERMODYNAMIC EFFECTS IN A TURBINE-COMBUSTOR.- ROTOR STATOR INTERACTION.- STATOR-ROTOR AEROELASTIC INTERACTION FOR THE TURBINE LAST STAGE IN 3D TRANSONIC FLOW.- EFFECTS OF STATOR CLOCKINGINSYSTEMOF ROWS STATOR-ROTOR-STATOROF THE SUBSONICAXIAL COMPRESSOR.- ROTOR-STATOR INTERACTION IN A HIGHLY-LOADED, SINGLE-STAGE, LOW-SPEED AXIAL COMPRESSOR:UNSTEADY MEASUREMENTS IN THE ROTOR RELATIVE FRAME.- TWO-STAGE TURBINE EXPERIMENTAL INVESTIGATIONS OF UNSTEADY STATOR-TO-STATOR INTERACTION.
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