Accession Number:

ADA383166

Title:

Jet Noise and Mixing in High Speed Axisymmetric Jets

Descriptive Note:

Final rept. 1 Oct 1998-30 Sep 1999

Corporate Author:

OHIO STATE UNIV RESEARCH FOUNDATION COLUMBUS

Personal Author(s):

Report Date:

2000-10-13

Pagination or Media Count:

7.0

Abstract:

A coaxial jet facility and a modular, full anechoic chamber, which has extensive optical access windows, have been designed to investigate mixing and acoustic radiation, especially interrelation between mixing and noise, in high speed jets. The facility will enable us to simultaneously measure acoustic radiation via microphones and flow parameters using advanced optical techniques such as planar Doppler velocimetry PDV. The primary and secondary jet diameters are 2.54 cm and 5.08 cm. The jet facility is equipped with a 100 kW heater to provide jet temperatures up to 800 K. The anechoic chamber is designed with fiber glass cloth covered wedges to handle even higher temperature. Currently we are in the process of carrying out flow visualizations and acoustic measurements both separately and simultaneously. The primary jet Mach numbers are 0.9 and 1.3. No secondary flow is utilized. Very preliminary sample results will be presented.

Subject Categories:

  • Acoustics
  • Noise Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE