Laser ranging measurements of turbulent water surfaces

Rak, Gašper (avtor), Steinman, Franci (avtor), Hočevar, Marko (avtor), Dular, Matevž (avtor), Jezeršek, Matija (avtor), Pavlovčič, Urban (avtor)

Laser ranging is a measurement method, applied in a wide range of applications. In this study, laser ranging is used to measure the height of turbulent water flows. Measurements were performed in three cross sections of a confluence where a tributary flow meets the main flow. Both flows exhibited high Reynolds and Froude numbers where the free-water surface profiles were turbulent, non-stationary and non-homogeneous. Measurements were taken using a commercial LIDAR and a high-speed camera. The high-speed camera was operated on the principle of laser triangulation, using only the illumination from the LIDAR laser beam. Since, no other state-of-the-art method for measuring instantaneous water surface profiles exists, LIDAR and triangulation methods could only be compared with each other. The results show good agreement between both methods for the average turbulent water profile and fair agreement for instantaneous profiles. Presented herein is an explanation of these results.

• Jezik: Angleški jezik
• Ključne besede: hydrotechnics, LIDAR, laser triangulation, free surface, turbulence, non-stationary surface, high-speed camera
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FGG - Fakulteta za gradbeništvo in geodezijo ; FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Recenzirani rokopis
• Leto izida: 2020
• Št. strani: Str. 165-172
• Številčenje: Vol. 81
• PID: 20.500.12556/RUL-126448
• UDK: 626/627
• ISSN pri članku: 0997-7546
• DOI: 10.1016/j.euromechflu.2020.02.001
• COBISS.SI-ID: 9085793
• Datum objave v RUL: 22.04.2021

Gradivo je del revije

• Naslov: European journal of mechanics. B, Fluids
• Skrajšan naslov: Eur. j. mech. B, Fluids
• Založnik: Elsevier
• ISSN: 0997-7546
• COBISS.SI-ID: 8129307

Licence

• Licenca: CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
• Opis: Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: hidrotehnika, LIDAR, laserska triangulacija, prosta površina, turbulenca, nestacionarna površina, hitra kamera