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 5 of 5 for “"Jeffery orbits"”.
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Angular dynamics of small particles in fluids
… torque on an ellipsoidal particle is given by Jeffery's theory [Jeffery, G. B. Proc. R. Soc. Lond. A 102, 161–179 (1922)]. In this thesis and the appended papers I describe three studies that all relate to this well-known result. First, we derive an effective equation of motion for the …
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Dynamics of semi-flexible fibres in viscous flow
… to the period of rotation and drift between Jeffery orbits. The direction of drift for a flexible fibre depends on both the intial orientation and the fibre’s flexiblity. We also present a linear analysis of how small distortions to a straight semi-flexible fibre grow when the flow places the …
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Mechanisms of reorientation in phytoplankton : fluid shear, surface interactions, and gravitaxis
… the swimming cells, resulting in characteristic Jeffery orbits and the emergent property of an effective aspect ratio. In contrast, results for other species are inconsistent with this picture and suggest an active, behavioral response to fluid shear, which allows cells to move towards low-shear …
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Mixing and Evaporation at the Cloud Edge and Angular Dynamics of Small Crystals in Viscous Flow
How liquid water in atmospheric clouds distributes over droplets of different sizes is important for the initiation of rainfall, and for the optical properties of the atmosphere. Droplet-number densities and droplet-size distributions change rapidly at turbulent cloud edges, where mixing of cloudy …
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Bacteria in shear flow
… exposed to a shear flow. In addition to classic Jeffery orbits, resistive force theory predicts a drift of the helix across streamlines, perpendicular to the shear plane. The direction of the drift is determined by the direction of the shear and the chirality of the helix. We verify this …