- Restrictions on Access:
- Unclassified, Unlimited, Publicly available.
- The Ribner formulation of the generation of aerodynamic sound is coupled with predictions of second-order velocity correlations and integral scale to estimate the sound radiated from several complicated jet flows. In particular, it is shown that the sound radiated from a cold swirling jet is greater than from its nonswirling equal thrust counterpart. The noise radiated from the flow field of a multitube suppressor was estimated and compared with an equal thrust diameter Gaussian jet. It is shown that the multitube concept is indeed quieter.
- NASA Technical Reports Server (NTRS) Collection.
- Document ID: 19780017416.
Accession ID: 78N25359.
- No Copyright.
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