<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Novel single Camera Techniques for 3D3C Lagrangian Trajectory Measurements in Interfacial Flows"^^ . "This thesis presents two single camera Particle Streak Velocimetry (PSV) techniques that were purpose-built for the measurement of Lagrangian three-dimensional three-component (3D3C) flow information in the turbulent boundary layer of transparent interfaces. Both techniques are based on a particle streak extraction routine that enables a sub-pixel precise extraction of individual particle trajectories. A periodical intensity modulation of the illumination was implemented to increase the temporal resolution of the extracted Lagrangian trajectories. The achieved high spatial and temporal resolution enables quantitative measurements of Lagrangian flow characteristics in the interfacial region of turbulent flow fields. The first measurement technique, called bichromatic Particle Streak Velocimetry (bPSV), uses an absorbing dye and a two-wavelength LED illumination to resolve three-dimensional data that are needed for the extraction of 3D3C trajectories. In the second measurement technique the depth estimation is realized by means of a focused plenoptic camera that records long time exposure light fields. Both techniques were applied to measure interfacial flow fields in a turbulent Rayleigh-Bénard (RB) convection. On the basis of the Lagrangian particle trajectories obtained in the bPSV measurements, acceleration statistics and particle pair dispersion statistics were evaluated. A comparison of the Lagrangian acceleration distribution with two recently published models yielded good agreements. In the extracted Lagrangian particle pair dispersion, transitions between three turbulent regimes (i.e. the Batchelor regime, the Richardson-Obukhov (R-O) regime and the diffusive regime) were observed. "^^ . "2012" . . . . . . . . "Björn Magnus"^^ . "Voss"^^ . "Björn Magnus Voss"^^ . . . . . . "Novel single Camera Techniques for 3D3C Lagrangian Trajectory Measurements in Interfacial Flows (PDF)"^^ . . . "bvossDiss.pdf"^^ . . . "Novel single Camera Techniques for 3D3C Lagrangian Trajectory Measurements in Interfacial Flows (Other)"^^ . . . . . . "indexcodes.txt"^^ . . . "Novel single Camera Techniques for 3D3C Lagrangian Trajectory Measurements in Interfacial Flows (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Novel single Camera Techniques for 3D3C Lagrangian Trajectory Measurements in Interfacial Flows (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Novel single Camera Techniques for 3D3C Lagrangian Trajectory Measurements in Interfacial Flows (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Novel single Camera Techniques for 3D3C Lagrangian Trajectory Measurements in Interfacial Flows (Other)"^^ . . . . . . "small.jpg"^^ . . "HTML Summary of #13362 \n\nNovel single Camera Techniques for 3D3C Lagrangian Trajectory Measurements in Interfacial Flows\n\n" . "text/html" . . . "530 Physik"@de . "530 Physics"@en . .