Laser ranging measurements of turbulent water surfaces

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

Povzetek

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.

Ključne besede

hidrotehnika;LIDAR;laserska triangulacija;prosta površina;turbulenca;nestacionarna površina;hitra kamera;hydrotechnics;laser triangulation;free surface;turbulence;non-stationary surface;high-speed camera;

Podatki

Jezik:	Angleški jezik
Leto izida:	2020
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UL FS - Fakulteta za strojništvo
UDK:	626/627
COBISS:	9085793
ISSN:	0997-7546
Št. ogledov:	490
Št. prenosov:	142
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarne ključne besede:	hidrotehnika;LIDAR;laserska triangulacija;prosta površina;turbulenca;nestacionarna površina;hitra kamera;
Vrsta dela (COBISS):	Članek v reviji
Konec prepovedi (OpenAIRE):	2022-06-01
Strani:	str. 165-172
Zvezek:	ǂVol. ǂ81
Čas izdaje:	May/Jun. 2020
DOI:	10.1016/j.euromechflu.2020.02.001
ID:	12982365