Computational investigation of blade vortex interaction noise

See Ho Wong, Michael Papadakis, Lakshmi S. Nizampatnam, Klaus A. Hoffmann, Ramesh K. Agarwal

Research output: Contribution to conferencePaperpeer-review

34 Scopus citations

Abstract

A significant source of helicopter noise is bladevortex- interaction (BVI). In a BVI, the source of the propagated wave is primarily due to the large pressure fluctuations that occur near the blade when the vortex passes immediately underneath the leading edge. This paper presents a computational methodology for predicting BVI acoustic signature. The full set of Fourier transformed linearized Euler equations were integrated to yield the acoustic signature. Computations were performed with two types of far field boundary conditions. These included standard non-reflecting boundary conditions as well as a Perfectly Matched Layer (PML) boundary. Computationarl esults obtained for a range of test configurations are presented.

Original languageEnglish
StatePublished - 2000
Event38th Aerospace Sciences Meeting and Exhibit 2000 - Reno, NV, United States
Duration: Jan 10 2000Jan 13 2000

Conference

Conference38th Aerospace Sciences Meeting and Exhibit 2000
Country/TerritoryUnited States
CityReno, NV
Period01/10/0001/13/00

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