Scholarly Works - Conferences
Conference
Proceedings of the ASME Turbo Expo
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January 1, 2017
Wake shielding in wind farms caused by the interaction of upstream energy-depleted wakes and down-stream turbines substantially reduces individual turbine efficiency and overall wind farm performance. A method is studied to alleviate this problem using sha ...
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Conference
Annual Forum Proceedings AHS International
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January 1, 2016
Wake shielding on wind farms substantially reduces the efficiency of downstream wind turbines due to the interaction with the energy-depleted wakes from upwind turbines. This research considers a method to mitigate the wake shielding effect by tilting the ...
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Conference
6th Aeroacoustics Conference and Exhibit
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January 1, 2000
Airframe noise due to structural vibration is estimated. This estimate shows that panel vibration driven by turbulent boundary layer fluctuations can produce airframe noise levels comparable to those measured on aerodynamically "clean" airframe configurati ...
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Conference
6th Aeroacoustics Conference and Exhibit
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January 1, 2000
An acoustic boundary element method is formulated using the time-averaged intensity and mean-square pressure. A continuous distribution of uncorrelated broadband high frequency sources is used to represent the boundaries of the enclosure. Local correlation ...
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Conference
36th AIAA Aerospace Sciences Meeting and Exhibit
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January 1, 1998
© 1998 by The Boeing Company. Published by the American Institute of Aeronautics and Astronautics, Inc.A novel method for calculating parallel blade vortex interaction (BVI) has been developed. The technique is based on the application of a three-dimension ...
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Conference
36th AIAA Aerospace Sciences Meeting and Exhibit
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January 1, 1998
© 1998 by The Boeing Company. Published by the American Institute of Aeronautics and Astronautics, Inc. A novel method for calculating parallel blade vortex interaction (BVI) has been developed. The technique is based on the application of a three-dimensio ...
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Conference
36th AIAA Aerospace Sciences Meeting and Exhibit
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January 1, 1998
A novel method for calculating parallel blade vortex interaction (BVI) has been developed. The technique is based on the application of a three-dimensional aeroacoustic boundary element formulation using Analytical/Numerical Matching in conjunction with a ...
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Conference
3rd AIAA Ceas Aeroacoustics Conference
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January 1, 1997
A novel method for calculating parallel two-dimensional blade vortex interaction (BVI) has been developed. The technique is based on the application of an aeroacoustic boundary element formulation using Analytical/Numerical Matching (ANM) in conjunction wi ...
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Conference
14th Applied Aerodynamics Conference
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January 1, 1996
A novel analytical method has been developed to accurately predict the core structure of a fully developed trailing vortex. Properties in the trailing vortex are calculated from the load distribution on the generating wing, and satisfy a set of fundamental ...
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Conference
13th Applied Aerodynamics Conference
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January 1, 1995
Analytical/Numerical Matching (ANM) is a hybrid scheme combining a low-resolution global numerical solution with a high-resolution local solution to form a composite solution. ANM is applied to lifting surfaces in steady potential flow to calculate the aer ...
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Conference
9th Computational Fluid Dynamics Conference 1989
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January 1, 1989
The calculation of fluid velocity from the Biot-Savart law integrated over vortex filaments has traditionally been computationally expensive. Discretizing the filaments into N vortex elements results in order N2 elemental velocity evaluations pe ...
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Conference
9th Computational Fluid Dynamics Conference 1989
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January 1, 1989
A method is proposed to determine directly the amount of artificial viscosity needed for stability using an eigenvalue analysis for a finite difference representation of the Navier-Stokes equations. The stability and growth of small perturbations about a s ...
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