TY - JOUR TI - Estimation of laser-Doppler anemometry measuring volume displacement in cylindrical pipe flow AU - Ristić Slavica S AU - Ilić Jelena T AU - Čantrak Djordje S AU - Ristić Ognjen R AU - Janković Novica Z JN - Thermal Science PY - 2012 VL - 16 IS - 4 SP - 1027 EP - 1042 PT - Article AB - 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]