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Measuring water surface topography using laser scanningRak, Gašper ; Hočevar, Marko, strojnik, 1972- ; Steinman, FranciMeasuring 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.Vir: Flow measurement and instrumentation. - ISSN 0955-5986 (Letn. 56, avg. 2017, str. 35-44)Vrsta gradiva - članek, sestavni delLeto - 2017Jezik - angleškiCOBISS.SI-ID - 8119905
Avtor
Rak, Gašper |
Hočevar, Marko, strojnik, 1972- |
Steinman, Franci
Teme
lasersko skeniranje |
nekontaktne merilne metode |
turbulentni tok |
ozračeni vodni tok |
topografija vodne gladine |
laser scanning |
non-contact measurement method |
turbulent flow |
aerated flow |
water surface topography
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Rak, Gašper | 29190 |
Hočevar, Marko, strojnik, 1972- | 18836 |
Steinman, Franci | 09274 |
Vir: Osebne bibliografije
in: SICRIS
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