Accession Number : ADP008975

Title :   LDA Characterization of Coaxial Jets and Comparison with Other Measurement Techniques,

Corporate Author : TECHNICAL UNIV OF LISBON (PORTUGAL)

Personal Author(s) : Buresti, G. ; Talamelli, A. ; Mordacci, A. ; Petagna, P. ; Tanzini, G.

Report Date : 23 JUL 1992

Pagination or Media Count : 6

Abstract : The experimental aerodynamic characterization of a coaxial jet through LDA and hot-wire measurements is described. It is shown that, in the flow regions where the local level of turbulence is not excessive, the two techniques give similar results as regards the mean velocity and the statistical description of the turbulent components. Conversely, the time variations and spectra may be comparable only if adequate procedures are used for the acquisition and processing of the LDA signals. (Author)

Descriptors :   *JET FLOW, *LASER ANEMOMETERS, *HOT WIRE ANEMOMETERS, COMPARISON, TURBULENCE, COAXIAL CONFIGURATIONS, DOPPLER EFFECT, ITALY.

Subject Categories : Fluid Mechanics
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE