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 15 of 15 for “"Water jets"”.
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A device for debridement using high pressure water jets
… In this thesis, technology using high-speed water jets is explored toward applications for debridement. After presenting possible techniques, the thesis expands on one promising method using two impinging cutting jets that is further developed and demonstrated on simulated necrotic tissue. …
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Cleaning viscoplastic soil layers from flat surfaces using impinging water jets
Impinging liquid jets are widely used in industry to clean unwanted soil layers from the internal walls of storage tanks and mixing vessels. Viscoplastic layers are common in a wide range of industrial applications and are challenging to clean due to their yield stress behaviour. When a stationary …
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An experimental investigation of the minimum Reynolds' number for instability in water jets
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Aeronautical Engineering, 1960.
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CUDA Accelerated X-ray Image Processing for Bone Detection in the Valka X-ray Guided Cutting Machine
… bones. The cutting is made with high pressure water jets. The water jets are controlled by robots which cut out the bones and portion the fillet with high precision while the fillet is rolling on the conveyor. The result is precision cut fillets for maximum revenues. This project involves …
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An Investigation of Methods to Homogeneously Entrain and Suspend Abrasive Particles in a Low Pressure Dental Water Jet
<p>During the past several decades, the water jet cutting concept has developed from a novel concept into a well-accepted machine cutting tool. With the addition of abrasive particles and the improvement of high pressure pumps, the water jet stream is currently capable of cutting through metal, …
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A tissue tensioner to limit water injection during high pressure water jet debridement
… technology that uses two high-speed impinging water jets to excise necrotic tissue. However, this device potentially causes accidental injection of water into healthy tissue beneath the wound bed, which can cause injury and necrosis in the healthy tissue. The purpose of this thesis is to …
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An experimental investigation of leakage flow paths in soil surrounding leaks in water distribution systems
Over the last few decades, water stress has been imminent in most municipalities around the world. The problem of water losses from pipelines is a major concern due to the increasing demands. Leakage is normally responsible for a large percentage of water losses in distribution systems and results …
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Effects of bit geometry in multiple bit-rock interaction
… parameters of the cutting head, and amount of water and position of water jets. This thesis evaluates the effects of bit geometry in multiple bits---rock interaction, utilizing an automated rotary coal cutting simulator (ARCCS) and synthetic rock. Five types of bit/cutting tool with different …
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Computational fluid dynamics and experimental study of the hydrodynamics of a bubble column and an air-water jet-stirred cell
… two bubbly flow systems, a bubble column and a waterjet-agitated flotation cell (Hydrojet cell), were studied by means of numerical simulations. In order to validate the bubble column CFD simulations Particle Image Velocimetry (PIV) was used. An experimental investigation about bubble size …
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Multiphase Fountains
… maximum depth reached by bubbles in turbulent water jets issuing downwards into a reservoir. We compare the experimental data with a theoretical model based on the conservation of volume, momentum and buoyancy fluxes. We proceed in chapter 3 by investigating the depth reached by bubbles in low …
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Hydrothermal spallation drilling and advanced energy conversion technologies for Engineered Geothermal Systems
… was designed and constructed to create flame jets in water at a pressure of 250 bar. The temperatures of these flames were measured, and attempts were made to use the flames to spall small rock samples. The experimental system was modified to study the centerline temperature decay of …
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Control configured design for smooth, highly-maneuverable, underwater vehicles
… the development of a new type of robotic underwater vehicle designed specifically for the inspection of critical infrastructures such as boiling water reactor nuclear power plants. These applications require vehicles that can access confined areas, maneuver precisely, and move easily in several …
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Particle ejection system : target particle recovery using a transient water jet
… and mining applications have used air jets and water jets to eject particles ranging in weight from a few grams to several hundred. With the current trends in mechanization leading towards higher processing speeds, these traditional methods have been found to be unsuitable: they have …