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Near Field Screech Noise Computation for an Underexpanded Supersonic Jet by the CE/SE Method (2001)

Jorgenson, Philip C. E. ; Hultgren, Lennart S. ; Loh, Ching Y.

In: CASI

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Publication Date: 2019-07-13

Description: The space-time conservation element and solution element (CE/SE) method is employed to numerically study the near-field axisymmetric screech-tone noise of a typical underexpanded circular jet issuing from a sonic nozzle. For the computed cases, corresponding to fully expanded Mach numbers of 1.10, 1.15 and 1.19, the self-sustained feedback loop is automatically established. The computed shock-cell structure, acoustic wave length, screech tone frequencies, and sound pressure levels are in good agreement with experimental results.

Keywords: Environment Pollution

Type: NASA/TM-2001-210958 , E-12813 , NAS 1.15:210958 , AIAA Paper 2001-2252 , Seventh Aeroacoustics Conference; May 28, 2001 - May 30, 2001; Maastricht; Netherlands

Format: application/pdf

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