A Time-Domain Convected High-Speed Impulsive Noise Simulation for Propeller at Incidence

Zhongjie Huang, Ghader Ghorbaniasl, Leonidas Siozos-Rousoulis, Christian Lacor

Research output: Chapter in Book/Report/Conference proceedingConference paper

Abstract

A time-domain analytic formulation is developed to predict the radiated noise from supersonically rotating sources in a subsonic moving medium with arbitrary direction. This analytic formulation is a new solution of the convective Ffowcs Williams-hawkings (FW-H) equation based on the so-called ‘emissions surface’ method, which has the capability of practically avoid Doppler singularity encountered in the well-known subsonic Formulations 1 and 1A. Thus, this formula can be used to predict the complicate high-speed impulsive (HSI) noise, which is one of the major contributors of noise radiated from some modern (rotor and propeller) configurations. Meanwhile, the effects of mean flow and incidence on the radiated noise can be explicitly considered in this formula. A supersonic tip-speed propeller blade at incidence validates the accuracy of the derived analytic formulation.
Original languageEnglish
Title of host publicationAIAA 2016-2874
PublisherAIAA
Pages1-12
Number of pages12
Publication statusPublished - 2016
Event22nd AIAA/CEAS Aeroacoustics Conference - Lyon, France
Duration: 30 May 20161 Jun 2016

Conference

Conference22nd AIAA/CEAS Aeroacoustics Conference
CountryFrance
CityLyon
Period30/05/161/06/16

Keywords

  • CFD
  • Aeroacoustics
  • propeller noise
  • High-speed impulsive noise
  • CAA

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