20.500.12556/RUL-146372 A review on methods for measurement of free water surface Pregled metod za merjenje proste vodne površine Turbulent free-surface flows are encountered in several engineering applications and are typically characterized by the entrainment of air bubbles due to intense mixing and surface deformation. The resulting complex multiphase structure of the air–water interface presents a challenge in precise and reliable measurements of the free-water-surface topography. Conventional methods by manometers, wave probes, point gauges or electromagnetic/ultrasonic devices are proven and reliable, but also time-consuming, with limited accuracy and are mostly intrusive. Accurate spatial and temporal measurements of complex three-dimensional free-surface flows in natural and man-made hydraulic structures are only viable by high-resolution non-contact methods, namely, LIDAR-based laser scanning, photogrammetric reconstruction from cameras with overlapping field of view, or laser triangulation that combines laser ranging with high-speed imaging data. In the absence of seeding particles and optical calibration targets, sufficient flow aeration is essential for the operation of both laser- and photogrammetry-based methods, with local aeration properties significantly affecting the measurement uncertainty of laser-based methods. free water surface measuring methods laser scanning high-speed imaging two-phase flow turbulent flow površina proste gladine metode meritev lasersko skeniranje hitri zajem slik dvofazni tok turbulentni tok true false true Angleški jezik Slovenski jezik Članek v reviji 2023-05-25 13:23:37 2023-05-25 13:23:42 2025-05-14 14:01:22 0000-00-00 00:00:00 2023 0 0 18 str. iss. 4, art.1842 Vol. 23 2023 0000-00-00 Zaloznikova Objavljeno apc 0000-00-00 0000-00-00 0000-00-00 532:626/627 1424-8220 10.3390/s23041842 141173507 sensors-23-01842-v2_(1).pdf sensors-23-01842-v2_(1).pdf 1 7309B6972E02AC08B445EFD8E7C06983 07a82f08fe7b3500d06f50267a5296454e2e4d7e243a8d9d9f0d305e37caba8b bf29ec6f-faee-11ed-a314-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=169548 https://www.mdpi.com/1424-8220/23/4/1842 1 52118f75-faee-11ed-a314-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=169547 Fakulteta za gradbeništvo in geodezijo Fakulteta za strojništvo 0 0 0