Leading edge noise studies using CAA

Jan W. Delfs; Jianping Yin; Xiaodong Li

doi:10.2514/6.1999-1897

Leading edge noise studies using CAA

Jan W. Delfs
, Jianping Yin
, Xiaodong Li

School of Energy and Power Engineering

German Aerospace Center

Research output: Contribution to conference › Paper › peer-review

9 Scopus citations

Abstract

The objective of the present work is to assess the possibility of using a high order CAA linearized Euler-FD-method to numerically simulate noise due to the interaction of vorticity with an edge. This approach is chosen not only to simulate the sound propagation, but as well the sound generation, i.e. the conversion of (part of the) hydrodynamic into acoustic perturbations. The numerical implications, especially the significance of artificial selective damping on the sound generation process are discussed. Physical results are given for a classical case of airframe noise, namely the noise occurring when a leading edge is subject to a flow with incoming (localized) vorticity disturbances.

Original language	English
DOIs	https://doi.org/10.2514/6.1999-1897
State	Published - 1999
Event	Aeroacoustics Conference and Exhibit, AIAA/CEAS 1999 - Bellevue, United States Duration: 10 May 1999 → 12 May 1999

Conference

Conference	Aeroacoustics Conference and Exhibit, AIAA/CEAS 1999
Country/Territory	United States
City	Bellevue
Period	10/05/99 → 12/05/99

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10.2514/6.1999-1897

Cite this

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title = "Leading edge noise studies using CAA",

abstract = "The objective of the present work is to assess the possibility of using a high order CAA linearized Euler-FD-method to numerically simulate noise due to the interaction of vorticity with an edge. This approach is chosen not only to simulate the sound propagation, but as well the sound generation, i.e. the conversion of (part of the) hydrodynamic into acoustic perturbations. The numerical implications, especially the significance of artificial selective damping on the sound generation process are discussed. Physical results are given for a classical case of airframe noise, namely the noise occurring when a leading edge is subject to a flow with incoming (localized) vorticity disturbances.",

author = "Delfs, \{Jan W.\} and Jianping Yin and Xiaodong Li",

note = "Publisher Copyright: {\textcopyright} 1999 by the American Institute of Aeronautics and Astronautics, Inc.; Aeroacoustics Conference and Exhibit, AIAA/CEAS 1999 ; Conference date: 10-05-1999 Through 12-05-1999",

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T1 - Leading edge noise studies using CAA

AU - Delfs, Jan W.

AU - Yin, Jianping

AU - Li, Xiaodong

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N2 - The objective of the present work is to assess the possibility of using a high order CAA linearized Euler-FD-method to numerically simulate noise due to the interaction of vorticity with an edge. This approach is chosen not only to simulate the sound propagation, but as well the sound generation, i.e. the conversion of (part of the) hydrodynamic into acoustic perturbations. The numerical implications, especially the significance of artificial selective damping on the sound generation process are discussed. Physical results are given for a classical case of airframe noise, namely the noise occurring when a leading edge is subject to a flow with incoming (localized) vorticity disturbances.

AB - The objective of the present work is to assess the possibility of using a high order CAA linearized Euler-FD-method to numerically simulate noise due to the interaction of vorticity with an edge. This approach is chosen not only to simulate the sound propagation, but as well the sound generation, i.e. the conversion of (part of the) hydrodynamic into acoustic perturbations. The numerical implications, especially the significance of artificial selective damping on the sound generation process are discussed. Physical results are given for a classical case of airframe noise, namely the noise occurring when a leading edge is subject to a flow with incoming (localized) vorticity disturbances.

UR - https://www.scopus.com/pages/publications/84983143156

U2 - 10.2514/6.1999-1897

DO - 10.2514/6.1999-1897

M3 - 论文

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T2 - Aeroacoustics Conference and Exhibit, AIAA/CEAS 1999

Y2 - 10 May 1999 through 12 May 1999

ER -

Leading edge noise studies using CAA

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