Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Performance of the Vectrino Profiler at the sediment-water interface
The Vectrino Profiler is increasingly recognized as a promising instrument for characterizing near-bed velocities and turbulence due to its high spatio-temporal resolution and velocity profiling range. However, its measurement performance in the vicinity of the bed (<10 mm) is not well documented. This study reports on the comparisons of mean velocity, turbulent kinetic energy, and power spectral density above various bed materials between the Vectrino Profiler and particle image velocimetry in a laboratory flume. Our analyses demonstrate that the bed interference adversely influences the measurements as close as 1.7-5 mm above the bed, depending on the bed material. We provide a criterion to identify the vertical extent of the interference region. Outside of the interference region, best agreement between the Vectrino Profiler and particle image velocimetry was found around the sweet-spot of the profiler where the observed differences were <6% for mean velocities and <10% for turbulent kinetic energy.
Performance of the Vectrino Profiler at the sediment-water interface
The Vectrino Profiler is increasingly recognized as a promising instrument for characterizing near-bed velocities and turbulence due to its high spatio-temporal resolution and velocity profiling range. However, its measurement performance in the vicinity of the bed (<10 mm) is not well documented. This study reports on the comparisons of mean velocity, turbulent kinetic energy, and power spectral density above various bed materials between the Vectrino Profiler and particle image velocimetry in a laboratory flume. Our analyses demonstrate that the bed interference adversely influences the measurements as close as 1.7-5 mm above the bed, depending on the bed material. We provide a criterion to identify the vertical extent of the interference region. Outside of the interference region, best agreement between the Vectrino Profiler and particle image velocimetry was found around the sweet-spot of the profiler where the observed differences were <6% for mean velocities and <10% for turbulent kinetic energy.
Performance of the Vectrino Profiler at the sediment-water interface
Koca, Kaan (Autor:in) / Noss, Christian / Anlanger, Christine / Brand, Andreas / Lorke, Andreas
2017
Aufsatz (Zeitschrift)
Englisch
velocity measurements , Sediment-water interfaces , Turbulent flow , Sweet taste , Sediments , turbulence , Geographical distribution , Flumes , Particle image velocimetry , Temporal resolution , Turbulence , Interference , Sediment-water interface , Velocity measurement , Density , Profiling , Materials , Velocity , Velocimetry , particle image velocimetry (PIV) , sediment-water interface , boundary layer , Kinetic energy , Measurement , Energy , Acoustic Doppler profiler
Performance of the Vectrino Profiler at the sediment–water interface
| Online Contents | 2017
Performance of the Vectrino Profiler at the sediment–water interface
| Taylor & Francis Verlag | 2017
The LISST-SL Streamlined Isokinetic Suspended-Sediment Profiler
| British Library Conference Proceedings | 2004
Measuring Bedload Sediment Transport with an Acoustic Doppler Velocity Profiler
| Online Contents | 2017
Measuring Bedload Sediment Transport with an Acoustic Doppler Velocity Profiler
| Online Contents | 2017