20.500.12556/RUL-143640 Uncertainty analysis of the air velocity standard based on LDA and wind tunnel This paper deals with uncertainty analysis an air velocity standard consisting of a wind tunnel and a laser Doppler anemometer (LDA) measuring system. The analysis is performed for air velocities between 0.3 m/s and 40 m/s, and a calibration procedure with the readings from the LDA and the device under test (DUT) taken simultaneously. The calculation of the reference air velocity includes a systematic correction of the velocity measured by the LDA to the position of the DUT. The study provides a complete and detailed methodology for estimating all major uncertainty contributions attributed to the LDA standard, position correction including velocity field uniformity, stability and uncorrected blockage effect. The contribution of the blockage effect was estimated for three different anemometers. For the Pitot static tube, the contribution of position correction predominates; however, for the other two larger anemometers, the contribution of the uncorrected blockage effect predominates at higher velocities. uncertainty analysis air velocity laser Doppler anemometer wind tunnels blockage effect analiza merilne negotovosti hitrost zraka laserski Dopplerejev anemometer vetrovniki zastojni učinek true false true Angleški jezik Slovenski jezik Članek v reviji 2023-01-05 07:57:12 2023-01-05 07:57:16 2025-04-28 08:45:28 0000-00-00 00:00:00 2023 0 0 9 str. Vol. 206, art. 112228 Jan. 2023 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 2024-11-26 533 1873-412X 10.1016/j.measurement.2022.112228 136179203 Bobovnik,_Kutin-_Uncertainty_analysis_of_the_air_velocity_standard_based_on_LDA_and_wind_tunnel.pdf Bobovnik,_Kutin-_Uncertainty_analysis_of_the_air_velocity_standard_based_on_LDA_and_wind_tunnel.pdf 1 CF3C3534A82643FD182EE63A98712481 d1d00b1da0515e32c5c359b39ee06d7d56e26ca59c4e5cd385b96d856181322f 67f93c48-8cc6-11ed-9c94-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=165468 https://www.sciencedirect.com/science/article/pii/S0263224122014245 1 f9838396-8cc5-11ed-9c94-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=165467 Fakulteta za strojništvo 0 0 0