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 20 of 64 for “"Drag Forces"”.
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Drag Forces on Bodies Moving Through Aqueous Clay Suspensions
Made available in DSpace on 2014-12-08T23:57:28Z (GMT). No. of bitstreams: 1 7021033.pdf: 6713753 bytes, checksum: ce9de8b1ab061248541ccfe43b7983fd (MD5) Previous issue date: 1970
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Lift and drag forces on a submarine pipeline in steady flow
… experimental investigation into the hydrodynamic forces induced on a cylinder placed transversely to a steady stream. Various cylinder locations near the bed of a water flume were considered. The work relates to pipeline design. The various flow phenomena around a cylinder are theoretically …
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Analysis of hydrodynamic drag forces acting on suspended fine particle in porous media
… The simulations results are used to compute the drag forces experienced by suspended fine particles. The drag force distributions experienced by suspended fine particles of different sizes in various compact granular porous media – ordered (simple cubic (SC), body-centered cubic (BCC), …
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Drag Forces of Two-Dimensional v-Shaped Notches in Transonic and Supersonic Turbulent Flow
Made available in DSpace on 2014-12-09T17:13:40Z (GMT). No. of bitstreams: 1 6711869.pdf: 5042576 bytes, checksum: ad8ebd9afe5c4c9bfda2cabe5115eff7 (MD5) Previous issue date: 1967
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A System for Measuring the Lift and Drag Forces of a Spinning Golf Ball Held Fixed Within a Wind Tunnel
… for studies to better understand the lift and drag coefficients of golf balls during their flight. Subsequent to testing, it was found that the force transducer was not adequate to measure the lift and drag coefficients with sufficient accuracy. Several suggestions have been made on how to …
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Numerical Simulation of Nanoscale Flow: A Molecular Dynamics Study of Drag
… having a nanoscale diameter, thus making the drag force on a nanoscale sphere an important engineering problem. Flows at this small of a scale begin to appear "grainy" and may not always behave as a continuous fluid. Molecular dynamics provides an approach to determine drag forces in those …
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In-line and transverse forces on a cylinder near a boundary in oscillatory flow
… to measure the in-line and transverse forces that act on a cylinder placed near a plane boundary in oscillatory flow. The value of performing such work is that it provides information on the forces that may be exerted by surf ace waves on a pipeline or cable mounted near the sea bed. …
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Effects of added drag on cetaceans : fishing gear entanglement and external tag attachment
… cost of movement depends on the resistive forces acting on an animal; changes in this force balance can occur naturally or unnaturally. Fishing gear that entangles large whales adds drag, often altering energy balance to the point of terminal emaciation. An analog to this is drag from tags …
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Effects and added drag on cetaceans : fishing gear entanglement and external tag
… cost of movement depends on the resistive forces acting on an animal; changes in this force balance can occur naturally or unnaturally. Fishing gear that entangles large whales adds drag, often altering energy balance to the point of terminal emaciation. An analog to this is drag from tags …
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ANALYSIS OF THE EFFECTS OF HEAVILY LOADED MAT FOUNDATION ON ADJACENT DRILLED SHAFT FOUNDATION
… the foundations. However, lateral stress and drag forces on the shafts resulting from the heavy load on the mat foundation are the two major factors that would affect the design and performance of shafts. Since there is not much literature and guidance available to analyze and design such kind …
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Scanning Probe Microscopy of Biomaterials and Nanoscale Biomechanics
… hindered by a low quality factor caused by large drag forces on the cantilever. Utilizing the small dimensions of a nanoneedle, the new method presented in this dissertation resolves the complications by keeping the cantilever outside of the liquid and using a nanoneedle attached to the AFM probe …
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Investigation of Momentum and Heat Transfer in Flow Past Suspensions of Non-Spherical Particles
… Momentum transfer, to first-order, is driven by drag forces experienced by the particles in suspension, followed by lift and lateral forces, and also through the transmission of fluid torque to the particles. The subject of this thesis is a family of prolate ellipsoidal particle geometries of …
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Observing Wave Propagation of a Float Serve on a Volleyball
… has been research that has determined that the drag forces on a non-spinning volleyball's boundary layer causes the ball to swerve on its trajectory. The purpose of this paper is to develop a numerical model for wave propagation on a volleyball, which we model as a smooth sphere, to show that …
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Investigation Of Pressure Fluctuations In The Hyporheic Zone In Response To Flow Around A Hydraulic Structure
… studied field. Particles erode when lift and drag forces overcome a critical threshold. These forces are typically studied from above the water-riverbed interface. This study maps hyporheic pressure fluctuations as they are related to surface water velocity. The pressure map is used to …
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Velocity characteristics in the wake of an oscillating cylinder
… velocities, experimental data include lift and drag forces and cylinder displacement. Vortices are found to be correlated along the entire length of the test cylinder only within a specific band of motion amplitudes and frequencies. Overall, forced oscillations produce vortices that are more …
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Hydrodynamic analysis and computer simulation applied to ship interaction during maneuvering in shallow channels
… motions of the ships. Also included are the lift forces and the cross-flow drag forces, which are found to be important for bank suction phenomena. A simplified method is implemented for box shapes, applicable for barge-tows operating in rivers. Results of the calculations are found to be …
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Deep Learning Methods for Predicting Fluid Forces in Dense Particle Suspensions
… etc. Accurate modelling of the fluid-particle forces is essential for lab-scale and industry-scale simulations. Fluid-particle system solutions can be obtained using various techniques including the macro-scale TFM (Two fluid model), the meso-scale CFD-DEM (CFD - Discrete Element Method) and …
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Applications of Data-Driven Learning Models in Fluid Mechanics: Solid-Fluid Multiphase Systems and Bat Flight
… within this domain: (1) deep learning-based drag force modeling for particulate suspensions, (2) reduced-order modeling (ROM) for flow predictions in randomly arranged solid arrays, and (3) data-driven analysis of bat flight kinematics. First, we address the challenge of accurately predicting …
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AeroDima: a cheetah-inspired aerodynamic tail for rapid manoeuvrability
… aerodynamic tail was then designed to maximise drag forces. This bio-inspired tail was also studied in a wind tunnel and compared to the cheetah tail's model. The tail required a platform to operate on, so AeroDima was designed and manufactured. The tail, designed to be a 3DOF underactuated …
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