CaltechAUTHORS
Published September 22, 1982 | Version public
Journal Article Metadata-only

An experimental investigation of pure tone generation by vortex shedding in a duct

Creators

  • 1. ROR icon California Institute of Technology

Abstract

An experimental investigation has been carried out for acoustic oscillations sustained by flow through a duct containing two baffles. Pure acoustic tones corresponding to longitudinal resonant modes of the duct are produced when certain flow and geometrical conditions are satisfied. The conditions are such as to ensure close coincidence between the frequency of vortex shedding from the forward baffle, and a natural frequency of the duct. Flow visualization has shown that under these conditions a stable vortex structure exists between the baffles, containing at all times an integral number of vortices.

Additional Information

© 1982 Academic Press Inc. (London) Limited. Received 16 September 1981, and in revised form 16 January 1982. Available online 13 December 2006. The authors have benefitted greatly from conversations with Professors T. Kubota and A. Roshko. This work was supported by the National Aeronautics and Space Administration under the Jet Propulsion Laboratory Contract NAS 7-100.

Additional details

Identifiers

Eprint ID
21257
Resolver ID
CaltechAUTHORS:20101209-093924977

Funding

NASA
NAS 7-100

Dates

Created
2010-12-10
Created from EPrint's datestamp field
Updated
2021-11-09
Created from EPrint's last_modified field

Caltech Custom Metadata

Caltech groups
Guggenheim Jet Propulsion Center , GALCIT
Other Numbering System Name
Guggenheim Jet Propulsion Center