Accession Number:

ADA030020

Title:

Idealized Siren Flow.

Descriptive Note:

Technical rept. Jun 67-Jan 70,

Corporate Author:

STANFORD RESEARCH INST MENLO PARK CALIF

Personal Author(s):

• Ablow,Clarence M.
• Muller,G. M.

Report Date:

1969-09-01

Pagination or Media Count:

29.0

Abstract:

An analytical model of the flow field in the vicinity of a siren is needed to support research in the effects of intense noise. The possibility that the field can be a periodic sequence of spherically self-symmetric source flows separated by shocks is shown to be untenable. The conditions for bounded mass, momentum, and energy in each puff of gas and the shock jump conditions cannot all be satisfied simultaneously at the origin. Author

Descriptors:

• *ACOUSTIC SIGNALS
• *DISTRESS SIGNALS
• MATHEMATICAL MODELS
• SHOCK WAVES
• THEORY
• AIR FLOW
• GAS DYNAMICS
• NONLINEAR SYSTEMS
• SOUND TRANSMISSION
• ACOUSTICS
• SOUND WAVES

Subject Categories:

• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE