Comparison of laser transit anemometry data analysis techniques

Author

Humphreys, William M., Jr. ; Gartrell, Luther R.

Author_Institution

NASA Langley Res. Center, Hampton, VA, USA

fYear

1991

fDate

27-31 Oct 1991

Firstpage

336

Lastpage

347

Abstract

Two techniques for the extraction of two-dimensional flow information from laser transit anemometry (LTA) data sets are presented and compared via a simulation study and experimental investigation. The methods are a probability density function (PDF) estimation technique and a marginal distribution analysis technique. The simulation study builds on the results of previous work and provides a quantification of the accuracy of both techniques for various LTA data acquisition scenarios. The experimental comparison consists of using an LTA system to survey the flow downstream of a turbulence generator in a small low-speed wind tunnel. The collected data sets are analyzed and compared

Keywords

aerospace simulation; anemometry; data acquisition; data analysis; flow measurement; flow simulation; laser velocimetry; probability; wind tunnels; Monte Carlo method; correlogram; data acquisition; estimation; laser transit anemometry; low-speed wind tunnel; marginal distribution analysis; probability density function; simulation; turbulence generator; two-dimensional flow; Data acquisition; Data analysis; Data mining; Laser beams; Measurement standards; NASA; Particle beams; Particle measurements; Probability density function; Velocity measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation in Aerospace Simulation Facilities, 1991. ICIASF '91 Record., International Congress on

Conference_Location

Rockville, MD

Type

conf

DOI

10.1109/ICIASF.1991.186257

Filename

186257