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Showing 1 to 12 of 12 for “"soap film"”.
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Experiments in turbulent soap-film flows: Marangoni shocks, frictional drag, and energy spectra
… measurements of the frictional drag in turbulent soap-film flows over smooth walls. These flows are effectively two-dimensional, and we are able to create soap-film flows with the two types of turbulent spectrum that are theoretically possible in two dimensions: the ``enstrophy cascade,'' for …
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Design and process/measurement for immersed element control in a reconfigurable vertically falling soap film
… in viscous flow regimes. My vertically falling soap film will provide a reconfigurable experimental environment for machine learning controllers. The real-time position and velocity data will be collected with a High Speed Video system, illuminated by a Low Pressure Sodium Lamp. Approximating …
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Two-dimensional Wakes and Fluid-structure Interaction of Circular Cylinders in Cross-flow
… and thermal engineering. In this work, a flowing soap film was used to investigate the wakes of multiple stationary circular cylinders and of a single oscillating cylinder. Corresponding computer simulations were also conducted. Vortex formation of a stationary circular cylinder was analyzed by …
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Piezoelectric energy harvesting: vortex induced vibrations in plants, soap films, and arrays of cylinders
… of a two dimensional system in a flowing soap film.
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Local Criteria in Polyhedral Minimizing Problems
… as in Taylor's classification of two-dimensional soap film singularities. There are three that arise naturally by taking products of $\mathbb{R}$ with lower dimensional cases and earlier literature has demonstrated the existence of two with 0-dimensional singularities. We classify all possible …
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Calibrating Schlieren imaging for understanding local film deformation for a range of wetting and intrusions in soap films
Bubbles and films play a pivotal role in the dispersion of pathogens. Intrusions in thin films directly affect the final spray size and concentration of droplets. In this study, we seek to develop a method that can inform the direct observation of contaminants interacting with the film in which …
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Vortex dynamics and forces in the laminar wakes of bluff bodies
… experiments were carried out in a gravity-driven soap film channel, which provides a `two-dimensional laboratory' for hydrodynamics experiments under certain conditions. In these experiments, we generated a `map' of the vortex patterns that arise in the wake as a function of the (nondimensional) …
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Experimental investigation of inclined cantilever beams in vertically falling soap films
… rigidity are studied in a vertically falling soap film experiment to visualize the wake and vortex shedding flow characteristics. High speed video and image analysis were used to estimate quantities such as the average displacement, vibration amplitude and frequency for the cantilevers. From …
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The Boundary Lubricated Friction and Wear of Low Alloy Steel
… of additive behaviour as an organo-metallic soap film. Heat flow considerations tended to suggest that surface temperature was not the overriding controlling factor in oxidational wear and a model is proposed which suggests oxygen concentration in the lubricant is the controlling factor in …
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Simulation of Inherent Curvature in Thin Film Rings
… of glass, cell membrane formation, thin film vapor deposition) can be a suitable target for simulation using this method. The examples displayed in this work all focus on the evolution of the shape of a soap film between two rings, which in the case of minimal area forms a catenoid. It is …
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Dynamics of vortices in complex wakes: modeling, analysis, and experiments
… results with experiments conducted in a flowing soap film with an airfoil, which was imparted with forced oscillations, are satisfactory and validate the reduced order modeling framework. The experiments have been performed by a collaborator group at the Department of Physics and Fluid Dynamics …
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Multi-scale and multi-physics models for photochemical fuel generation
L'abstract è presente nell'allegato / the abstract is in the attachment