Accession Number:

AD0691059

Title:

ON-LINE COMPUTER ANALYSIS OF TURBULENCE DATA WITH THE FAST FOURIER TRANSFORM METHOD,

Descriptive Note:

Corporate Author:

BOEING SCIENTIFIC RESEARCH LABS SEATTLE WASH FLIGHT SCIENCES LAB

Report Date:

1969-06-01

Pagination or Media Count:

37.0

Abstract:

Turbulence signals from linearized hot wire anemometers are sent directly to a digital computer with an analog-to-digital converter. The analog signals are converted to digital form and analyzed by means of the fast Fourier transform algorithm to obtain mean velocities, turbulence intensities, auto-spectra and auto-correlations. Sample auto-spectral and auto-correlation measurements in a two-dimensional turbulent mixing layer are shown these results are obtained by analyzing 1,600,000 data points. Author

Subject Categories:

  • Aerodynamics
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE