Numerical study of suppression of supersonic jet noise

San Yih Lin, Sheng Jii Hsieh, Ke Chih Chen

Research output: Contribution to conferencePaperpeer-review


Numerical investigations of the unsteady flow field and the associated acoustic noise of perfectly expanded supersonic jet were performed numerically. The near and mid-field flow fields are obtained by an axisymmetric Euler solver. The numerical solver is based on a third-order upwind finite-volume scheme in space and a secondorder explicit Kunge-Kutta scheme in time. Far field noise is then obtained from the Kirchhoff’s method. Details of the density distribution, pressure distribution, and sound pressure level with different jet conditions were investigated. By using the correlation method, the convective Mach numbers of a series of jet conditions are computed. As the convective Mach number is greater than one, the Mach waves from the exhaust of the supersonic jet were clean shown in the density and pressure contours. The coaxial jet is then investigated to suppress the jet noise.

Original languageEnglish
Number of pages10
Publication statusPublished - 1998 Jul 1
Event4th AIAA/CEAS Aeroacoustics Conference, 1998 - Toulouse, France
Duration: 1998 Jun 21998 Jun 4


Other4th AIAA/CEAS Aeroacoustics Conference, 1998

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Aerospace Engineering


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