NUMERICAL MODELING OF THREE-DIMENSIONAL FLOWS IN TURBOFAN ENGINE EXHAUST NOZZLES

An experimental and numerical study was conducted to investigate the use of three-dimensional viscous analysis for the design of internal mixers for jet noise suppression. Three flows, a full-scale free mixer, a full-scale lobed mixer, and a model-scale lobed mixer, were selected for study. Details of the experiments, turbulence modeling, and the determination of initial flow properties from engine operating properties are described together with a discussion of the usefulness of the analysis for mixing design. Overall the results are encouraging and, at least for the flows considered here, numerical analysis appears to compare favorably with model-scale tests as a simulation of the full-scale flow.

  • Availability:
  • Corporate Authors:

    American Institute of Aeronautics and Astronautics

    1290 Avenue of the Americas
    New York, NY  United States  10019
  • Authors:
    • Birch, S F
    • Paynter, G C
    • SPALDING, D B
    • Tatchell, D G
  • Publication Date: 1978-8

Media Info

  • Features: References;
  • Pagination: p. 489-496
  • Serial:
    • Journal of Aircraft
    • Volume: 15
    • Issue Number: 8
    • Publisher: American Institute of Aeronautics and Astronautics
    • ISSN: 0021-8669

Subject/Index Terms

Filing Info

  • Accession Number: 00188614
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Mar 14 1979 12:00AM