Landing gear aerodynamic noise prediction using unstructured grids

Frederic J. Souliez, Lyle N. Long, Philip J. Morris, Anupam Sharma

Research output: Contribution to conferencePaperpeer-review

62 Scopus citations

Abstract

Aerodynamic noise from a landing gear in a uniform flow is computed using the Ffowcs Williams-Hawkings (FW-H) equation. The time accurate flow data on the surface is obtained using a finite volume flow solver on an unstructured grid. The FW-H equation is solved using surface integrals over the landing gear surface and over a permeable surface away from the landing gear. Two geometric configurations are tested in order to assess the impact of two lateral struts on the sound level and directivity in the far-field. Predictions from the FW-H code are compared with direct calculations by the flow solver at several observer locations inside the computational domain. The permeable FW-H surface predictions match those of the flow solver in the near-field. Far-field noise calculations coincide for both integration surfaces. The increase in drag observed between the two landing gear configurations is reflected in the sound pressure level and directivity mainly in the streamwise direction.

Original languageEnglish (US)
DOIs
StatePublished - 2002
Event40th AIAA Aerospace Sciences Meeting and Exhibit 2002 - Reno, NV, United States
Duration: Jan 14 2002Jan 17 2002

Other

Other40th AIAA Aerospace Sciences Meeting and Exhibit 2002
CountryUnited States
CityReno, NV
Period1/14/021/17/02

All Science Journal Classification (ASJC) codes

  • Space and Planetary Science
  • Aerospace Engineering

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