The frequency of droughts and floods is increasing due to the extreme climate. Therefore, water resource planning, allocation, disaster prevention have become increasingly important. One most important kinds hydrological data in resources planning management discharge. general way measure depth discharge use Acoustic Doppler Current Profiler (ADCP), a semi-intrusive instrument. This method woul...

Flow field in shallow waters, which is characterized by its complex mixing process and inherent dynamic nature, is interesting mainly due to its practical importance (e. g. in free flushing operation and sedimentation in large reservoirs). 3D numerical models make it possible to track two-dimensional large turbulence coherent structures, which are the dominant phenomenon in shallow reservoirs f...

Non-intrusive image-based techniques for measuring surface river velocities have rapidly evolved as a cost-effective and safe means quantifying flow patterns. Large-scale particle image velocimetry (LSPIV) can provide instantaneous over large spatial footprint with little pre-calibration compared to traditional techniques. Assessment of the distribution in hydraulic models has been comparativel...

Resource quantification is vital in developing a tidal stream energy site but challenging high areas. Drone-based large-scale particle image velocimetry (LSPIV) may provide novel, low cost, risk approach that improves spatial coverage compared to ADCP methods. For the first time, this study quantifies performance of technique for resource assessment, using three sites. Videos sea surface were c...

Discharge measurement is a basic tool for process control and modelling in both natural and urbanized catchments. One of the limitations of measurement methods in use is the direct contact between the velocity measurement device and flowing liquid, resulting in maintenance difficulties. Thus, this paper deals with the design, laboratory testing and field verification of a nonintrusive discharge...