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 13 of 13 for “"Experimental Fluid Mechanics"”.
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Experimental hydrodynamics of spherical projectiles impacting on a free surface using high speed imaging techniques
… impacting the free surface using a unique experimental WebLab facility. Experiments were performed to determine the force impact coefficients of spheres and then compare obtained results to theories developed by Von-Karman [ 19] and Wagner [20]. It was found that experimental results …
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Integration and Validation of Flow Image Quantification (Flow-IQ) System
… Corporation. The system is tailored towards experimental fluid mechanics applications. The second aim of this work was to test the performance of DPIV algorithms in wall shear flows, and to test the performance of several particle sizing algorithms for use in spray sizing and average diameter …
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Particle manipulation by attractive and repulsive forces in 2-D streaming flows
… microbubble streaming and transport flows. Our experimental setup uses steady streaming flow generated by ultrasonically driven semi-cylindrical microbubble combined with Poiseuille flow. Previous experiments have shown instances of particles being repelled from the surface of the interface. …
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Investigations of Injectors for Scramjet Engines
An experimental study of an aerodynamic ramp (aeroramp) injector was conducted at Virginia Tech. The aeroramp consisted of an array of two rows with two columns of flush-wall holes that induce vorticity and enhance mixing. For comparison, a single-hole circular injector with the same area angled …
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Experimental study of turbulence past thin tabs
… triangular, and ellipsoidal geometries is experimentally investigated using particle image velocimetry at Reynolds number Re=2000 and Re=12900 based on the tabs height and freestream velocity. Turbulence statistics including streamwise velocity, turbulent kinetic energy (TKE), and vortex …
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Quantifying particle sorting in microbubble streaming flows
… on oscillatory time scales are determined experimentally using a novel method in which the trajectories of small and large particles are compared. These forces are found to scale quadratically with both oscillatory flow speed and particle size. Simulations of particle trajectories are used …
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Analysis of Three Dimensional Turbulent Shear Flow Experiments with Respect to Algebraic Modeling Parameters
… in the transport equations. Eleven existing experimental data sets were acquired from the original authors and re-examined with respect to developed and existing parameters. A variety of flow geometries were collected for comparison. Emphasis was placed on experiments that included all six …
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Design and development of a wind tunnel for the investigation of turbulent compressible mixing layers
… motivated by the need for high-quality benchmark experimental data of the compressible mixing layer phenomenon for use in computational fluid dynamics (CFD) validation. This need has arisen because of improved computational capability and the practicality of high-resolution flow simulation …
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Development of a scalable real-time Lagrangian particle tracking system for volumetric flow field characterization
… six camera prototype system was developed and an experimental analysis was conducted to assess the uncertainty in the 3D position, velocity and acceleration measurements of observed particles. The 3D position combined standard uncertainty was 0.16 mm and accuracy was comparable to a caliper in …
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The Influence of Trailing Edge Shape and Kinematics on Bio-inspired Pitching Panels
… to propulsive performance. However, recent experimental and computational work on purely pitching panels has demonstrated that such planform shapes are not representative of propulsive optimality. Prior to the results of this dissertation, these counter-intuitive findings have primarily been …
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Design and development of a rectangular supersonic wind tunnel facility for the study of shock/boundary layer interactions
… performance of the inlets. The objective of the experimental team at the University of Illinois was to provide testing support to evaluate simple, passive, and bleedless inlet shock wave/boundary layer interaction control options, called micro-vortex generators. A new supersonic wind tunnel was …
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An experimental study of the spread of buoyant water into a rotating environment
… previously unresolved issues regarding the fluid dynamics of the spread of buoyant water into a rotating environment. We focus in particular on the role that finite potential vorticity and background turbulence play in determining the flow properties. When water of an anomalous density …
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Tomographic PIV measurement of coherent dissipation scale structures
Further understanding the small scale coherent structures which occur in high Reynolds number turbulence would be of enormous benefit. Therefore, the aim of the current project was to make well resolved three-dimensional flow measurements of the mixing flow between counter rotating impellers, using …