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 430 for “"suction"”.
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Positive pressure induced channeled suction cups
… describes the design and characterization of suction pads for in-pipe robots. The suction cups are made of hyperelastic materials that contain air channels inside. Instead of using conventional suction technique that is prone to leaking and loosing adhesion force, the suction cup is actuated …
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Modular auger design to prevent clogging in suction
… system that reduces the risk of clogging in suction piping meant to process sargassum seaweed. The auger supports a slurry pump-based system being designed to address sargassum blooms adversely affecting beaches in the Caribbean. By reducing clogging, the auger will prevent damage to the pump …
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Investigation of suction recirculation in rocket pump inducers
Rocket pump inducers are studied with a Navier-Stokes solver, the Moore Elliptic Flow Program, MEFP. Two redesigns of the Rocketdyne ADP inducer are performed. The first redesign changes the hub-tip ratio from 0.3 to 0.4. The second redesign influences the leading edge tip region. This part of the …
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Two-dimensional cut plan optimization for cutter suction dredgers
Optimal cut plans for cutter suction dredgers aim to maximize operational efficiency. Maximizing operational efficiency involves minimization of stoppage time resulting from non-productive dredger movements. To automate a systematic search for optimal twodimensional cut plans for cutter suction …
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Turbulent flow in a porous tube with wall suction.
This study examines the effects of suction (i.e. lateral flow through the walls) on the structure of a fully developed turbulent pipe flow. Also the effect of suction on pressure gradient and pressure change is examined experimentally. The frictional characteristics of Irrigro$\sp{\circler,}$ the …
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Controlling role of suction stress in the Atterberg limits
… the fundamental role of water in soil behavior. Suction stress governs the Atterberg limits, and variations in suction stress behavior dictate transitions in soil consistency. Specifically, internal soil stress interactions that generate suction stress control the liquid and plastic limits, and …
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Prototype Testing of a Modified Poroelastic Matric Suction Sensor.
The matric suction is one of the stress state variables used in the interpretation of the engineering behaviour of soils. This thesis documents development of a Poroelastic Matric Suction Sensor (PE sensor). The advantage of this sensor is that it is a direct method with a relatively large range of …
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Soil suction and swell behavior of chemically treated expansive clays
… treating soils affects the matric and osmotic suction of soils has not been investigated. Therefore, this research focused on the soil suction and swell behavior of chemically treated clay.</p> <p>Two subject soils were chosen. One was from Irving, Texas with high swell potential. The other one …
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Oil migration and property change at compressor suction and discharge
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-05-01
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Design and analysis of supercritical airfoils with boundary layer suction
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1996.
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Experimental study of boundary layer suction in a transonic compressor
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1997.
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Suction Cup Lysimeter Method for Extracting Pine Bark Substrate Solution
… this study was to determine the effectiveness of suction cup lysimeters (SCL) in extracting substrate solution from pine bark substrates. Lysimeter types tested were 4.8-cm diameter with a ½ or 1-bar air-entry value (AEV) and 2.2-cm diameter also with a ½ or 1-bar AEV. Sufficient volume could be …
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The response of a suction anchor group to various applied loadings.
The results of a study of the behaviour of buried suction anchors tested singly and in a group arrangement are presented and discussed. The tests were conducted in saturated granular soil, contained in a 1.8 m diameter tank, in both loose and dense states. The model anchors and the test apparatus …
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Development and Use of Moisture-Suction Relationships for Geosynthetic Clay Liners
… program was conducted to determine the moisture-suction relationships of geosynthetic clay liners (GCLs). Moisture-suction relationships were determined by combining suction data from pressure plate tests, contact filter paper tests, and relative humidity tests, then fitting water retention …
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Similar Solutions for Internal Flows with Suction or Injection at the Wall
North Carolina State University Theses Mechanical Engineering.
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Experiments on the stability of the flat-plate boundary layer with suction
The effects of boundary-layer suction in stabilizing the laminar boundary layer were considered in this experimental work. The experiments were conducted on a flat-plate wind-tunnel model in the V.P.I. & S.U. Stability Tunnel. The capabilities of the wind tunnel in terms of mean flow uniformity and …
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Measurement of Matric Suction In Thin Membrane Surface Highways Using Thermal Conductivity Sensors
… of not only normal stress but also matric suction. Therefore matric suction should be a major consideration in the analysis and design of these highways. The consideration of matric suction in the design of TMS highways requires a reliable and practical methodology quantitatively measure …
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