Unsteady Aerodynamics, Aeroacoustics, and Aeroelasticity of Turbomachines and Propellers

Front Matter....Pages i-x
Front Matter....Pages 1-1
Unsteady Aerodynamic Methods....Pages 3-42
An Innovative Algorithm for Periodic Flow Calculations Using a Parallel Architecture — Some Applications to Unsteady Aerodynamics....Pages 43-56
A Framework for Multi-Stage Unsteady Flow Calculations....Pages 57-72
Long Time Behavior of Unsteady Flow Computations....Pages 73-90
Simulation of 3D-Unsteady Internal Flows....Pages 91-106
Front Matter....Pages 107-107
Time Linearized Euler Calculations for Unsteady Quasi-3D Cascade Flows....Pages 109-126
Unsteady Flow Field Predictions for Oscillating Cascades....Pages 127-147
Compressible Flows with Vortical Disturbances Around a Cascade of Loaded Airfoils....Pages 149-176
Development of a Steady Potential Solver for Use with Linearized Unsteady Aerodynamic Analyses....Pages 177-194
Calculation of Unsteady Linearized Euler Flows in Cascades Using Harmonically Deforming Grids....Pages 195-212
2D Linearized Harmonic Euler Flow Analysis for Flutter and Forced Response....Pages 213-230
Prediction of Unsteady 2D-Flow in Turbomachinery Bladings....Pages 231-249
Axial-Gap Effects on the Propagation of Unsteady Flow in Cascades....Pages 251-268
Front Matter....Pages 269-269
Unsteady Lifting Surface Theory for Supersonic Through-Flow Fan....Pages 271-288
Time-Dependent Predictions and Analysis of Turbine Cascade Data in the Transonic Flow Region....Pages 289-308
Supersonic Stator-Rotor Interaction in a Turbine Stage....Pages 309-329
Oscillation of an Airfoil Behind a Detached Normal Shock....Pages 331-355
Front Matter....Pages 357-357
Experimental Determination of Nonlinear Transfer Functions Characterizing Shock Wave/Turbulent Boundary Layer Interactions....Pages 359-376
Analysis of Blade Unsteady Boundary Layers and Wakes....Pages 377-395
Active Control of Centrifugal Compressor Rotating Stall....Pages 397-414
Front Matter....Pages 357-357
Computational Investigation of Airfoil Stall Flutter....Pages 415-432
Compressor Blade Gust Response to Attached and Separated Flow Forcing Functions....Pages 433-451
Front Matter....Pages 453-453
Experimental Methods and Results in Unsteady Aerodynamics and Aeroelasticity....Pages 455-485
Three-Dimensional Unsteady Flow in a Single Stage Axial-Flow Turbine and Compressor....Pages 487-505
Reduced Frequency Effects on Gust Response Unsteady Aerodynamics in Turbomachines....Pages 507-527
The Response of a Low Solidity Symmetric Airfoil Cascade to Compressor Wake and Linear Theory Gusts....Pages 529-546
Time-Dependent Pressure Fluctuations on an Oscillating Turbine Cascade at Transonic Off-Design Flow Conditions....Pages 547-565
Linear Oscillating Cascade Unsteady Aerodynamic Experiments....Pages 567-582
Experimental Investigation of the Unsteady Pressure Field on a Vibrating Blade in Steady and Unsteady Flow....Pages 583-601
Test Facility for Flutter Investigations with Variable Frequency of the Vibrating Blade....Pages 603-616
Front Matter....Pages 617-617
Aeroacoustics in Turbomachines and Propellers — Future Research Needs....Pages 619-642
Acoustic Control of Flow Instabilities....Pages 643-653
High-Speed Helicopter Rotor Noise-Shock Waves as a Potent Source of Sound....Pages 655-668
Unsteady Flowfield of a Propfan at Takeoff Conditions....Pages 669-683
Prediction of Noise Field of a Propfan at Angle of Attack....Pages 685-703
The Application of Experimental Data to Blade Wake Interaction Noise Prediction....Pages 705-723
Aeroacoustics of Real Blade Cascades....Pages 725-742
High Frequency Gust Interaction with Single Loaded Airfoils in Subsonic Flows....Pages 743-764
Influence of Airfoil Shape and Incidence Angle on High-Frequency Gust Interaction Noise....Pages 765-782
Front Matter....Pages 783-783
A Comparison of Mistuning Effects on Flutter Between Stalled and Unstalled Cascades....Pages 785-805
Front Matter....Pages 783-783
Splitter Blades for Passive Turbomachine Flutter Control....Pages 807-828
A Non-synchronous Vibration of Moving Blades Coupled with the Bleed Chamber Resonance in an Axial Compressor....Pages 829-842
Aeroelasticity of Fan Blades with Complex Modes....Pages 843-856
Front Matter....Pages 857-857
Panel Discussion on Standard Configurations for Unsteady Flow Through Vibrating Axial-Flow Turbomachine-Cascades....Pages 859-889