NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Effect of non-Poisson samples on turbulence spectra from laser velocimetrySpectral analysis of laser velocimetry (LV) data plays an important role in characterizing a turbulent flow and in estimating the associated turbulence scales, which can be helpful in validating theoretical and numerical turbulence models. The determination of turbulence scales is critically dependent on the accuracy of the spectral estimates. Spectral estimations from 'individual realization' laser velocimetry data are typically based on the assumption of a Poisson sampling process. What this Note has demonstrated is that the sampling distribution must be considered before spectral estimates are used to infer turbulence scales.
Document ID
19950055624
Document Type
Reprint (Version printed in journal)
Authors
Sree, Dave (Tuskegee University Tuskegee, AL, United States)
Kjelgaard, Scott O. (NASA Langley Research Center Hampton, VA, United States)
Sellers, William L., III (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 16, 2013
Publication Date
December 1, 1994
Publication Information
Publication: AIAA Journal
Volume: 32
Issue: 12
ISSN: 0001-1452
Subject Category
FLUID MECHANICS AND HEAT TRANSFER
Funding Number(s)
CONTRACT_GRANT: NAG1-1549
Distribution Limits
Public
Copyright
Other