Accession Number:

AD0706475

Title:

THE TRAPPING OF ACOUSTICAL ENERGY IN AN INFINITELY LONG JET,

Descriptive Note:

Corporate Author:

BOEING SCIENTIFIC RESEARCH LABS SEATTLE WASH

Personal Author(s):

• Graham,E. W.
• Graham,B. B.

Report Date:

1970-03-01

Pagination or Media Count:

33.0

Abstract:

The mean-square pressure far downstream in the jet considered as an index of trapped energy is determined for a two-dimensional source in a two-dimensional jet of infinite length. Jets having shear layer boundaries and velocity discontinuity boundaries are considered. Results from the particular examples chosen suggest that in certain frequency bands this trapped energy in the infinitely long jet is significant. Author

Descriptors:

• *JET FLOW
• *NOISE
• ENERGY
• TWO DIMENSIONAL FLOW
• DUCTS
• MATHEMATICAL ANALYSIS
• PRESSURE

Subject Categories:

• Acoustics
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE