Skip to main content
padlock icon - secure page this page is secure

Akustische Impedanz einer luftdurchströmten Öffnung

Buy Article:

$30.00 + tax (Refund Policy)

The reflection coefficient and the acoustic impedance of tube orifices with flow discharge are measured by the method of the impedance tube. Flow velocities up to 150 m/s are used. With a flow discharge the reflection coefficient of the orifice is strongly increased, the orifice becoming more pressure release, whereas with suction the reflection coefficient decreases. The real part of the orifice impedance even becomes negative at low frequencies. The effects of the flow are reduced by grids and screens inserted into the orifice. At the low frequency limit the static pressure drop acts like an increase of the resistance part of the impedance.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: January 1, 1965

More about this publication?
  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
  • Editorial Board
  • Information for Authors
  • Submit a Paper
  • Subscribe to this Title
  • Information for Advertisers
  • Online User License
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more