20.500.12556/RUL-126378 Construction of water surface topography using LIDAR data Izdelava topografije vodne gladine z uporabo LIDAR podatkov Measurements of water surface topography are important for hydraulic structures, operation of hydropower plants as well as in the determination of water surface profiles in rivers, especially in the event of high waters. We therefore investigated the conditions at a confluence of two supercritical flows, where distinctly three-dimensional flow conditions of standing waves form, as well as an unsteady structure of the water flow in transversal and longitudinal directions. Due to the fast water surface dynamics and the phenomenon of foamed or twophase flow, the conventional measurement methods typically used in hydro engineering are not suitable for capturing complex water surface topography with high temporal and spatial resolution. Hence we wanted to verify the appropriateness of the laser scanning method for water surface topography measurements. This measurement method, which is considered less suitable or even useless for measurements of water body surfaces, was, coupled with an innovative approach, successfully used for water surface measurements of dynamic, turbulent, two-phase water flow. The acquisition of a point cloud with high temporal and spatial resolution allows for the construction of topography of intensive waving, which will also enable a topology analysis based on a phenomenological analysis of the relations between integral parameters of water flows and standing wave characteristics at the confluence. laser scanner water surface topography two-phase flow confluence lasersko skeniranje vodna površina topografija dvo-fazni tok sotočje true false true Angleški jezik Slovenski jezik Članek v reviji 2021-04-19 15:10:45 2021-04-19 15:10:47 2022-09-05 03:54:59 0000-00-00 00:00:00 2018 0 0 Str. 555-565 no. 9 Vol. 64 Sep. 2018 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 626/627 0039-2480 URN:NBN:SI:doc-9XCVL2A1 10.5545/sv-jme.2017.4619 8451937 762116 RAZ_Rak_Gasper_2018.pdf RAZ_Rak_Gasper_2018.pdf 1 9D8D9940F8FAE6A87DB3EF98D6E234A7 08fd2be7039bf03a1749f6943978228af54c77fb3b9bd6f3aac03a66c87145e2 e5ad9434-a1bb-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=142307 http://www.sv-jme.eu/article/construction-of-water-surface-topography-using-lidar-data/ 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=142305 Fakulteta za strojništvo Strojniški vestnik 0 0 0