A comparison study of reduced order models for aeroacoustic applications

K. H. Seid, G. Gilka, R. C.K. Leung, F. Thiele

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

4 Citations (Scopus)

Abstract

The snapshot-based Proper Orthogonal Decomposition (POD) and Dynamic Mode Decomposition (DMD) approaches have been applied to develop the reduced-order models for full compressible flows in aeroacoustic applications. The versatility of these methods are evaluated and compared by applying them to the aeroacoustics of a flow past a square cylinder with single dominant frequency and cavity flow oscillation with multiple frequency components. Direct numerical simulations of the compressible Navier-Stokes equations have been performed using a Conservation Element and Solution Element (CE/SE) method. Snapshots of the velocities and enthalpy field and an inner product which couples the contributions of both kinematic and thermodynamic state are used in the extraction of the reduced order basis, and the acoustics pressure field are reconstructed and compared in order to examine their strengths and weaknesses in aeroacoustic applications.

Original languageEnglish
Title of host publication18th AIAA/CEAS Aeroacoustics Conference (33rd AIAA Aeroacoustics Conference)
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781600869327
DOIs
Publication statusPublished - 2012
Event18th AIAA/CEAS Aeroacoustics Conference 2012 (33rd AIAA Aeroacoustics Conference) - , United States
Duration: 4 Jun 20126 Jun 2012

Publication series

Name18th AIAA/CEAS Aeroacoustics Conference (33rd AIAA Aeroacoustics Conference)

Conference

Conference18th AIAA/CEAS Aeroacoustics Conference 2012 (33rd AIAA Aeroacoustics Conference)
Country/TerritoryUnited States
Period4/06/126/06/12

ASJC Scopus subject areas

  • Aerospace Engineering
  • Mechanical Engineering
  • Acoustics and Ultrasonics

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