Accession Number:

ADA636291

Title:

Turbulent Boundary Layer Wall Pressure Fluctuation Using Water Injection

Descriptive Note:

Technical memo

Corporate Author:

NAVAL UNDERWATER SYSTEMS CENTER NEW LONDON CT

Personal Author(s):

Report Date:

1986-10-08

Pagination or Media Count:

34.0

Abstract:

This technical memorandum consists of the text and visual graphics of an invited paper to be presented in December 1986 at the Forum on Flow Induced Noise and Vibrations sponsored by the Noise Control and Acoustics division of the American Society of Mechanical Engineers ASME. This paper is a status report of ongoing experiments in the Naval Underwater Systems Center NUSC acoustically quiet water tunnel located in New London, CT. The objective of these experiments is to determine the utility of cold ambient water injection into a boundary layer to reduce the intensity of turbulent boundary layer wall pressure fluctuations TBLPF or as its commonly called flow noise. Future studies will characterize the effect of heated water injection on TBLPF. The current experiments consist of turbulent boundary layer wall pressure fluctuation measurements downstream of a perforated steel plate through which ambient temperature water is injected into the turbulent boundary layer.

Subject Categories:

  • Acoustics
  • Fluid Mechanics
  • Reciprocating and Rotating Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE