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RISEfficient Passage-Spectral Method For Unsteady Flows Under Stall Conditions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents an efficient method of approximating unsteady flows using a block-wise discrete spatial Fourier series for the modeling of three-dimensional non-axisymmetric flows without making any hypothesis about ...
Validation of Broadband Noise Prediction Methodology Based on Linearized Navier–Stokes Analyses
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This article presents an integral validation of a synthetic turbulence broadband noise prediction methodology for fan/outlet-guide-vane (OGV) interaction. The test vehicle is the ACAT1 fan, a modern scaled-down fan, ...
The Low Reduced Frequency Limit of Vibrating Airfoils—Part II: Numerical Experiments
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper studies the unsteady aerodynamics of vibrating airfoils in the low reduced frequency regime with special emphasis on its impact on the scaling of the workpercycle curves by means of numerical experiments. ...
A Novel Mixing Plane Method Using Nonreflecting Boundary Conditions for Multirow Analysis in Turbomachines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A new formulation of the mixing plane boundary condition to analyze the steadystate interaction between adjacent rows of a turbomachine, used in conjunction with steady twodimensional nonreflecting boundary conditions, is ...
Quantification of the Influence of Unsteady Aerodynamic Loading on the Damping Characteristics of Airfoils Oscillating at Low Reduced Frequency—Part II: Numerical Verification
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper numerically investigates the correlation between the so-called unsteady loading parameter (ULP), derived in Part I of the corresponding paper, and the unsteady aerodynamics of oscillating airfoils at low reduced ...
Quantification of the Influence of Unsteady Aerodynamic Loading on the Damping Characteristics of Airfoils Oscillating at Low-Reduced Frequency—Part I: Theoretical Support
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The effect of the unsteady aerodynamic loading of oscillating airfoils in the low-reduced frequency regime on the work per cycle curves is investigated. The theoretical analysis is based on a perturbation analysis of the ...
The Low Reduced Frequency Limit of Vibrating Airfoils—Part I: Theoretical Analysis
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper studies the unsteady aerodynamics of vibrating airfoils in the low reduced frequency regime with special emphasis on its impact on the scaling of the workpercycle curves, using an asymptotic approach. A perturbation ...
Conceptual Flutter Analysis of Labyrinth Seals Using Analytical Models—Part I: Theoretical Support
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A simple nondimensional model to describe the flutter onset of labyrinth seals is presented. The linearized mass and momentum integral equations for a control volume which represents the interfin seal cavity, retaining the ...
Conceptual Flutter Analysis of Labyrinth Seals Using Analytical Models—Part II: Physical Interpretation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The dimensionless model presented in part I of the corresponding paper to describe the flutter onset of two-fin rotating seals is exploited to extract valuable engineering trends with the design parameters. The analytical ...
Conceptual Flutter Analysis of Stepped Labyrinth Seals
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A simple nondimensional model to describe the flutter onset of two-fin straight labyrinth seals (Corral and Vega, 2018, “Conceptual Flutter Analysis of Labyrinth Seals Using Analytical Models—Part I: Theoretical Background,” ...