NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Experimental evaluation of fluctuating density and radiated noise from a high temperature jetAn experimental investigation has been conducted to characterize the fluctuating density within a high-temperature (1100 K) subsonic jet and to characterize by the noise radiated to the surroundings. Cross correlations obtained by introducing time delay to the signals detected from spatially separated crossed laser beams set up as a Schlieren system were used to determine radial and axial distributions of the convection velocity of the moving noise sources (eddies). In addition, the autocorrelation of the fluctuating density was evaluated in the moving frame of reference of the eddies. Also, the autocorrelation of the radiated noise in the moving reference frame was evaluated from cross correlations by introducing time delay to the signals detected by spatially separated pairs of microphones. Radial distributions of the mean velocity were obtained from measurements of the stagnation temperature, and stagnation and static pressures with the use of probes.
Document ID
19730021509
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Massier, P. F. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Parthasarathy, S. P. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Cuffel, R. F. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
September 2, 2013
Publication Date
October 1, 1973
Subject Category
Fluid Mechanics
Report/Patent Number
JPL-TM-33-643
NASA-CR-133789
Meeting Information
Meeting: AGARD Fluid Dyn. Panel Meeting
Location: Brussels
Country: Belguim
Start Date: September 19, 1973
End Date: September 21, 1973
Accession Number
73N30241
Funding Number(s)
CONTRACT_GRANT: NAS7-100
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available