DBPapers
DOI: 10.5593/SGEM2016/B31/S12.046

FLOW TRACKER INSTRUMENT APPLICATION IN LABORATORY CONDITION

R.Schugerl, R. Dulovicova, Y. Veliskova
Wednesday 7 September 2016 by Libadmin2016

References: 16th International Multidisciplinary Scientific GeoConference SGEM 2016, www.sgem.org, SGEM2016 Conference Proceedings, ISBN 978-619-7105-61-2 / ISSN 1314-2704, June 28 - July 6, 2016, Book3 Vol. 1, 351-358 pp

ABSTRACT
Paper describes application possibilities of Flow Tracker device, which is suitable for discharge measurement in a stream, but also for determination of velocity components in flowing water. The device works at two modes. One of them is so called „Discharge Mode“ and it is primarily used for discharge determination in measured cross-section profiles, or for determination of distribution of average velocities in verticals. The second one is so called „General Mode“ which allows to measure velocity components in any measured point grid. Paper deals with basic attributes of the second mode, „General Mode“. For measurement there was used the three-dimensional probe of Flow Tracker device. (SonTek / YSI). Practical applications were performed in laboratory conditions. The tests were done in the 25 m long flume with rectangular cross section shape. Firstly, the measurement was performed without any barrier in the flume, and next we modified the flow conditions both in horizontal and vertical direction by installation of wooden barrier into the laboratory flume. The velocity vectors were measured in both cases in the same grid of measured points. In all points there were measured velocity components vx, vy, vz.. The result of the measurement is a database of velocity components in the selected points, from which it is possible to determine the profiles of individual velocity components or resultant of these three components of velocity barrier.

Keywords: Doppler principle, flow velocity profile, velocity components