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 8 of 8 for “"3d Particle Tracking"”.
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3D particle tracking velocimetry using synthetic aperture imaging
3D visualization of fluid flow is of critical significance to a number of applications ranging from micro-scale medical devices to design of ships and airplanes. Of the various techniques currently used to visualize flow fields, particle image velocimetry (PIV) offers great advantages because of …
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Lagrangian dynamics of turbulence: Applications with 3D particle tracking velocimetry
… for a distinct characterization of the motion of particles. It is particularly useful in the understanding of dispersion, mixing, and transport phenomena. Due to the complexity and difficulty in quantifying Lagrangian properties, experimental studies on turbulence-driven phenomena in the …
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Resonances and Mixing in Confined Time-dependent Stokes Flows: The experiments, Numerics, and Analytics
… dissertation, two ways of obtaining mixing in 3D near-integrable bounded time -dependent Stoke Flows are studied: resonances and separatrix crossings. First, I illustrate that the resonances between different components of the original flow and the perturbation may break the invariant surfaces, …
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Marine snow tracking stereo imaging system
The transport of particles of organic carbon from the ocean's surface to its bottom plays a key role in the global carbon cycle and carbon sequestration. Quantifying the rate of this Biological Carbon Pump - the size and velocity distribution of falling particles below the mixing layer, for example …
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Experimental Measurements of Vortex Breakdown with non-Isothermal Inflow
… velocity thus reducing the effective swirl. 3D Particle Tracking Velocimetry was used to obtain time-resolved flow fields of the vortex flow and breakdown with and without heating. Individual velocity profiles and velocity fields are presented, showing that flow behavior is dependent on much …
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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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Single polymer dynamics in semi-dilute solutions: linear and ring polymers
… devices by coupling the Stokes trap with particle tracking. Here, we study the phenomenon of flow-induced particle migration to measure polymer-induced solution stresses and extensional viscosity in semi-dilute solutions of DNA and synthetic polymers. We combined the automated hydrodynamic …