THERMAL SCIENCE

International Scientific Journal

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
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 4, PAGES [1027 - 1042]
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© 2019 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence