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 41 for “"Flow loop"”.
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Benchmarking of a sCO2 Heat Exchanger Flow Loop
… studied experimentally by commissioning a sCO2 flow loop featuring a horizontal tube-in-tube counterflow heat exchanger with a circular cross section. The main objective was to establish experimental heat transfer research capabilities for sCO2 at Embry-Riddle Aeronautical University’s (ERAU) …
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Corrosion Studies of Molten Chloride Salt: Electrochemical Measurements and Forced Flow Loop Tests
… techniques and a forced convection loop. It explores corrosion thermodynamic properties, electrochemical corrosion kinetics, and flow-induced dynamic corrosion. The study developed a novel electrochemical method for measuring thermodynamic properties of corrosion products and …
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Design and Characterization of a High pressure Flow Loop for Heat Transfer Experiments of Supercritical Carbon Dioxide
… crucial phenomenon, a state-of-the-art closed flow loop was developed. This setup enabled convective heat transfer experiments of sCO2 under diverse boundary conditions and test section geometries. Key components of the loop include the test section, constant temperature bath, pump, flow meter, …
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Remote cooling using cold electromagnetic values to drive an external flow loop on a G-M cryocooler
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2001.
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Design and Construction of a Subcooled Boiling Flow Loop with an Internally Heated Vertical Annulus for Use in Testing Departure from Nucleate Boiling (DNB)
… of an apparatus to use in subcooled boiling flow experiments. A vertical annulus flow loop was design to mimic a rod used in a reactor boiler. The system was tested at different velocities and temperatures to verify it could be used in a range of experiments to try and match real world …
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Design of Fouling-Resistant Coatings for Energy Systems: Theory and Proof of Principle at Realistic Conditions
… and temperature. The results are compared to flow loop tests, and the coating stability is tested in an irradiated flow loop with PWR spectrum. A set of promising coating materials is found, with the best candidates proven to reduce CRUD fouling by approximately an order of magnitude in a …
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Experimental evaluation of heat transfer characteristics of silica nanofluid
… for silica nanofluid. An experimental loop was built to obtain heat transfer coefficients for single-phase nanofluids in a circular conduit in laminar flow regime. Thermal conductivity and viscosity measurements were conducted on the silica nanofluid to determine the thermophysical …
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Experimental study of alumina-water and zirconia-water nanofluids convective heat transfer and viscous pressure loss in Laminar regime
… properties compared with pure base fluids. A flow loop with a vertical heated section was designed and constructed to operate in the laminar flow regime (Re<2000). Initial tests were conducted with deionized water for experiment validation. Alumina nanofluid was tested in the flow loop at four …
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Magnetohydrodynamic Heat Transfer for Fusion Energy
… thesis uses measurements from a new experimental flow loop and new analysis of existing literature data to provide a heat transfer correlation for turbulent magnetohydrodynamic flows. Fluids used as breeder/coolant in fusion power plant blankets must provide adequate heat transfer of up to 10 …
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USING COMPUTATIONAL METHODS TO OPTIMIZE HIGH HEAT FLUX COMPONENT THERMAL PERFORMANCE IN MAGNETIC CONFINEMENT FUSION REACTOR RESEARCH
… geometries across a variety of different flow and heating conditions. This work examines heat transfer enhancement and rib geometry optimization to support experimental research for nuclear fusion applications. The project begins by designing and analyzing test sections supporting a helium …
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Dynamics of Flow-Induced Structure Formation in Drag Reducing Polymer Solutions
… with HPAM and PAM solutions in a large channel flow loop at Re ≥ 20,000 provide evidence of the importance of chain degradation to changes in drag reduction with time. Losses in molecular weight are small in the case of HPAM and do not correspond to losses in drag reduction. The PAM solutions …
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Investigation of cryogenic cooling for a high-field toroidal field magnet used in the SPARC fusion reactor design
… cryogenic fluids are being considered for forced flow cooling. This thesis analyzes the thermophysical properties of helium, hydrogen, and neon, and constructs a numerical model to investigate the forced flow cooling for REBCO HTS tapes under the extreme heating conditions present in the SPARC V0 …
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One-dimensional single phase natural circulation model of FLiNaK in Molten Salt Loop
… was developed. This model is for the Molten Salt Loop currently under development at University of Ontario Institute of Technology to investigate aging related degradation effects and thermal storage applications of FLiNaK. The model’s purpose is to help design the flow loop and future …
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Characterization of Friction Reducer Properties in Oil-Field Operations
… friction reduction. This research uses friction flow loop experiments to characterize the performance of partially hydrolyzed polyacrylamide friction reducers in conditions relevant to the oil field. Polymer concentration and degree of hydrolysis effects on friction reduction are evaluated in the …
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Laboratory Development of a Self-Powered Fontan for Treatment of Congenital Heart Disease
… Jet Shunt (IJS), used to “entrain” the pulmonary flow and thus provide assistance while reducing the caval pressure. A benchtop Mock Flow Loop (MFL) is configured to validate this hypothesis. The MFL is based on a Lumped-Parameter Model (LPM) of the Fontan circulation and is comprised of upper and …
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Plasma flows in the Alcator C-Mod scrape-off layer
Near-sonic parallel plasma flows are persistently observed in the scrape-off layer (SOL) of tokamaks, at locations far from material surfaces. Ballooning-like transport asymmetries are thought to be a principal driver for the strong parallel flows, a hypothesis supported by the observation of steep …
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Hydrodynamic Characterization of an Arterial Flow Bioreactor
An in vitro arterial flow bioreactor system for the generation of physiological flows in a biological environment was designed, constructed, and characterized. The design was based on models previously used to investigate the response of endothelial cells to shear. The model interfaces a bioreactor …
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Optimization of Hybrid Hemodynamics from Mechanical Support Devices in Cardiogenic Shock
… (MCS) offers the promise of forward blood flow maintenance and distal tissue perfusion without taxing the failing heart. However, there are no firm determinants of device initiation and titration, and demonstration of definitive clinical benefit remains elusive. In part this is due to …
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High pulse repetition frequency XeCl laser and its applications
… presented.The device uses a closed-cycle gas flow loop, constructed from stainless-steel for corrosive gas compatibility, and a total volume of 6 litres and a working pressure of 4 atmospheres. A magnetically coupled, tangential fan provides the gas flow and, with appropriate flow shaping into …
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