Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"tomographic PIV"”.
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Tomographic PIV measurement of coherent dissipation scale structures
… flow between counter rotating impellers, using Tomographic Particle Image Velocimetry (TPIV). TPIV software was developed, with a novel approach permitting a significant reduction in processing time, and a series of numerical accuracy studies contributing to the fundamental understanding of this …
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Three-Dimensional Fluid Flow Measurement Techniques with Applications to Biological Flows
The accuracy of plenoptic and tomographic particle image velocimetry (PIV) experimental methods is measured by simulating three-dimensional flows and measuring the errors in the estimated versus true velocity fields. Parametric studies investigate the accuracy of these methods by simulating a range …
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Measurement of three-dimensional coherent fluid structure in high Reynolds number turbulent boundary layers
… by our ability to simulate and measure them. Tomographic Particle Image Velocimetry (TPIV) is a recently developed technique for direct measurement of fluid velocity within a 3D region. This allows new insight into the topological structure of turbulent boundary layers. Increasing Reynolds …
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Towards real-time light field processing for quantitative imaging and perception
… imaging based 3D particle image velocimetry (PIV) practically feasible and affordable. In addition, this thesis also extends light field imaging techniques developed with PIV as a target application, for improved perception in robotics. Building upon the basic concepts of light field (LF) …
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Three-dimensional turbulence mechanisms in a supersonic separated/reattaching longitudinal cylinder wake
… stereoscopic particle image velocimetry (SPIV), which measures all three components of velocity along a large planar region, and tomographic PIV (TPIV), which measures all three components of velocity throughout a volumetric region. Large ensembles of measurement samples were acquired and …
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Geometrische und stochastische Modelle zur Optimierung der Leistungsfähigkeit des Strömungsmessverfahrens 3D-PTV
Die 3D Particle Tracking Velocimetry (3D PTV) ist eine Methode zur bildbasierten Bestimmung von Geschwindigkeitsfeldern in Gas- oder Flüssigkeitsströmungen. Dazu wird die Strömung mit Partikeln markiert und durch ein Mehrkamerasystem beobachtet. Das Ergebnis der Datenauswertung sind 3D Trajektorien …
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The fluid-structure interaction of an axisymmetric underexpanded jet flowing across an adjacent compliant surface
… validated using particle image velocimetry (PIV) and stereo/3D digital image correlation (sDIC), respectively, for the compliantsurface case. These data provide insights into the relevant fluid-structure interaction involved via a comparison to the rigid-surface case. The results obtained for …