THERMAL SCIENCE

International Scientific Journal

Slavica S. Ristić

,

Jelena T. Ilić

,

Djordje S. Čantrak

,

Ognjen R. Ristić

,

Novica Z. Janković

ESTIMATION OF LASER-DOPPLER ANEMOMETRY MEASURING VOLUME DISPLACEMENT IN CYLINDRICAL PIPE FLOW

ABSTRACT
Laser-Doppler anemometry application in measurements of the 3-D swirl turbulent flow velocity in the cylindrical pipe, behind the axial fan, have been analysed. This paper presents a brief overview of uncertainty sources in the laser-Doppler anemometry measurements. Special attention is paid to estimation of laser-Doppler anemometry measuring volume positioning in cylindrical pipe flow due to optical aberrations, caused by the pipe wall curvature. The hypothesis, that in the central part of the pipe (r/R < 0.6) exists a small, or negligible pipe wall influence on laser- -Doppler anemometry measuring position, is investigate. The required corrections, for measurements of axial, tangential, and radial velocity components such: shift of measuring volume and its orientation are analyzed and determined for used test rig and for some other pipe geometries. [Projekat Ministarstva nauke Republike Srbije, br. TR 35046]
KEYWORDS
laser-Doppler anemometry, measuring volume shift, cylindrical pipe, aberrations, uncertainty
PAPER SUBMITTED: 2012-05-28
PAPER REVISED: 2012-07-01
PAPER ACCEPTED: 2012-07-30
DOI REFERENCE: https://doi.org/10.2298/TSCI1204027R
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2012, VOLUME 16, ISSUE Issue 4, PAGES [1027 - 1042]
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Estimation of laser-Doppler anemometry measuring volume displacement in cylindrical pipe flow

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