Direct aeroacoustic and aerodynamic simulation of multi-hole engine liners

Jingmei Liu, Lyle N. Long

Research output: Contribution to conferencePaper

6 Citations (Scopus)

Abstract

This paper presents a new method to simulate the aeroacoustics and aerodynamics of engine liners. The method is based on the nonlinear disturbance equations (NLDE). First a steady state flow field is computed by a standard CFL code (or analytically) and then the NLDE is used to simulate the perturbations. Numerically it is fourth order accurate in space and time. Thompson characteristic boundary conditions are applied to introduce acoustic waves at the inlet boundary of the duct. A typical engine liner unit with three holes on the face sheet is studied with and without the influence of a mean flow. The results show the interaction between the holes and their contributions to the acoustics in the duct. This study supplies a better understanding of the mechanism of engine liner aeroacoustics. Parallel computers are a necessity for this compute-intensive problem.

Original languageEnglish (US)
DOIs
StatePublished - Jan 1 1998
Event4th AIAA/CEAS Aeroacoustics Conference, 1998 - Toulouse, France
Duration: Jun 2 1998Jun 4 1998

Other

Other4th AIAA/CEAS Aeroacoustics Conference, 1998
CountryFrance
CityToulouse
Period6/2/986/4/98

Fingerprint

Aeroacoustics
Aerodynamics
Engines
Ducts
Flow fields
Acoustics
Acoustic waves
Boundary conditions

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Aerospace Engineering

Cite this

Liu, J., & Long, L. N. (1998). Direct aeroacoustic and aerodynamic simulation of multi-hole engine liners. Paper presented at 4th AIAA/CEAS Aeroacoustics Conference, 1998, Toulouse, France. https://doi.org/10.2514/6.1998-2330
Liu, Jingmei ; Long, Lyle N. / Direct aeroacoustic and aerodynamic simulation of multi-hole engine liners. Paper presented at 4th AIAA/CEAS Aeroacoustics Conference, 1998, Toulouse, France.
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Liu, J & Long, LN 1998, 'Direct aeroacoustic and aerodynamic simulation of multi-hole engine liners' Paper presented at 4th AIAA/CEAS Aeroacoustics Conference, 1998, Toulouse, France, 6/2/98 - 6/4/98, . https://doi.org/10.2514/6.1998-2330

Direct aeroacoustic and aerodynamic simulation of multi-hole engine liners. / Liu, Jingmei; Long, Lyle N.

1998. Paper presented at 4th AIAA/CEAS Aeroacoustics Conference, 1998, Toulouse, France.

Research output: Contribution to conferencePaper

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AB - This paper presents a new method to simulate the aeroacoustics and aerodynamics of engine liners. The method is based on the nonlinear disturbance equations (NLDE). First a steady state flow field is computed by a standard CFL code (or analytically) and then the NLDE is used to simulate the perturbations. Numerically it is fourth order accurate in space and time. Thompson characteristic boundary conditions are applied to introduce acoustic waves at the inlet boundary of the duct. A typical engine liner unit with three holes on the face sheet is studied with and without the influence of a mean flow. The results show the interaction between the holes and their contributions to the acoustics in the duct. This study supplies a better understanding of the mechanism of engine liner aeroacoustics. Parallel computers are a necessity for this compute-intensive problem.

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Liu J, Long LN. Direct aeroacoustic and aerodynamic simulation of multi-hole engine liners. 1998. Paper presented at 4th AIAA/CEAS Aeroacoustics Conference, 1998, Toulouse, France. https://doi.org/10.2514/6.1998-2330