Your browser does not allow JavaScript!
JavaScript is necessary for the proper functioning of this website. Please enable JavaScript or use a modern browser.
Open Science Slovenia
Open Science
DiKUL
slv
|
eng
Search
Browse
New in RUL
About RUL
In numbers
Help
Sign in
Measuring water surface topography using laser scanning
ID
Rak, Gašper
(
Author
),
ID
Hočevar, Marko
(
Author
),
ID
Steinman, Franci
(
Author
)
This document has no files.
This document may have a phisical copy in the library of the organization, check the status via
COBISS.
Image galllery
Abstract
Measuring the topography of water surfaces with conventional measurement methods is, particularly in the case of turbulent flow with strong vertical and longitudinal dynamics, a very demanding and challenging task. Channel confluences are important elements in river engineering, as they appear in natural and regulated river channels, torrents, as well as in numerous hydraulic structures. At confluences, especially in the case of incoming supercritical flow, turbulent three-dimensional flows occur, and a time-varying structure of waters surface. Laser scanning enables data capture with high spatial and temporal resolution, and this method is widely used nowadays. This article discusses laser scanning as a measurement method for acquiring the agitated shape of a water surface. The application of a commercial two-dimensional LIDAR device for free-water-surface acquisition is presented for two cases. In the first case the measurements were performed in a glass tank where it was possible to determine the precise reference water level. In the second case we used LIDAR with turbulent aerated flow for fluctuating free-water surface measurement. Measurements were taken in the model of supercritical confluence, where the development of standing waves leads to the phenomenon of self-aerated flow. The measurements presented in the paper were conducted for a selected discharge rates and the Froude numbers of the main and side flow channels. Measurement results are shown as surface profiles at several selected locations of confluence. This measurement method has proven to be very promising.
Language:
English
Keywords:
laser scanning
,
non-contact measurement method
,
turbulent flow
,
aerated flow
,
water surface topography
Typology:
1.01 - Original Scientific Article
Organization:
FGG - Faculty of Civil and Geodetic Engineering
Year:
2017
Number of pages:
Str. 35-44
Numbering:
Letn. 56
PID:
20.500.12556/RUL-126479
UDC:
626/627
ISSN on article:
0955-5986
DOI:
10.1016/j.flowmeasinst.2017.07.004
COBISS.SI-ID:
8119905
Publication date in RUL:
23.04.2021
Views:
1141
Downloads:
0
Metadata:
Cite this work
Plain text
BibTeX
EndNote XML
EndNote/Refer
RIS
ABNT
ACM Ref
AMA
APA
Chicago 17th Author-Date
Harvard
IEEE
ISO 690
MLA
Vancouver
:
Copy citation
Share:
Record is a part of a journal
Title:
Flow measurement and instrumentation
Shortened title:
Flow meas. instrum.
Publisher:
Elsevier
ISSN:
0955-5986
COBISS.SI-ID:
169755
Secondary language
Language:
Slovenian
Keywords:
lasersko skeniranje
,
nekontaktne merilne metode
,
turbulentni tok
,
ozračeni vodni tok
,
topografija vodne gladine
Similar documents
Similar works from RUL:
Similar works from other Slovenian collections:
Back