ACOUSTIC MEASUREMENTS IN CAVITATION TESTING

The fundamental issues regarding the facility requirements for obtaining accurate cavitation noise measurements, for proper interpretation of acoustic data, and for some special measurement instrumentation are discussed. A brief summary of the currently used alternative noise scaling techniques is given, and the restrictions that each scaling technique places on the maintenance of acoustic similitude in different facilities are outlined. The bulk of the paper delineates, from the perspective of U.S. experience, the problems of accounting for such phenomena as acoustic reflections, locally generated background noises of various types, and free gas bubbles. Finally, the possible benefits of acoustic array technology for limited use in certain facilities and the limitations that facility layout may place on the use of such technology are examined.

Media Info

  • Features: References;
  • Pagination: 30p.

Subject/Index Terms

Filing Info

  • Accession Number: 00661150
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM