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 “"Pump design"”.
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Derivative-Free Methods for High-Dimensional Optimization with Application to Centrifugal Pump Design
Many real-life design problems do not have access to derivative information. For instance, many design problems use open-source or commercial computational fluid dynamics (CFD) simulation codes to evaluate design performance. Although automatic differentiation and adjoints have become increasingly …
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The computer modelling and experimental study of confined jet mixing with application to jet pump design
As an, aid to jet pump design and performance analysis, a theoretical investigation on turbulent confined jet mixing in a non-uniform axisymmetric duct typically used in jet pumps and ejectors has been undertaken. A so-called Prandtl-Kolmogorov two-equation turbulence model, with turbulent kinetic …
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Design and Validation of an Accessible and 3D-Printable 24-Channel Peristaltic Pump for Cell Culture Research
Peristaltic pumps are an essential part of biomedical research worldwide. The peristaltic pumps used for cell culture are precise and accurate machines which cycle media to and from cells during experiments. Commercial peristaltic pumps pose barriers for all labs due to expensive purchase and …
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Design Exploration for Biological Fluid Sampling Platform
This work explores the design of an implantable, peristaltic pumping platform for chronic sampling of neuropeptides. The project drew inspiration from a pumping platform previously developed in the Cima Lab. Users have reported that the previous platform is difficult to use. The pump is also nearly …
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Preliminary performance characteristics of a microfabricated turbopump
The demonstration micro turbopump was designed to prove the feasibility of pumping a liquid using a turbopump on the micro scale. This thesis presents the first data indicating positive pumping from the demonstration micro turbopump. Data pertaining to both the turbomachinery as well as the bearing …
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Systems analysis of a microfabricated storable bipropellant rocket engine
… are feasible. It is shown that a 300 atm turbopump feed system is possible while further investigations on bearings and pump design are required to fully validate the concept. The analysis suggests that the storable bipropellant micro-rocket engine concept is feasible and identifies the …
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Inlet metering pump analysis and experimental evaluation with application for flow control
Axial piston pumps with variable volumetric displacement are often used to control flow and pressure in hydraulic systems. The displacement control mechanism in these pumps occupies significant space and accounts for significant cost in the pump design. Fixed displacement pumps have lower cost and …
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Design optimization of oxygenated fluid pump
… the set infusion rate on an ordinary pump does not necessarily indicate what is delivered. In addition, the fluid is provided at a 90% gas by volume concentration and is extremely viscous. The goal of this project is to create a pump to deliver a specified volumetric flow rate of the …
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Electrocaloric applications based on multilayer capacitors of PbSc₀.₅Ta₀.₅O₃
… used as refrigerants in refrigerators and heat pumps. The phenomenology of EC effects is first briefly discussed, and EC materials and prototypes are then reviewed. Methods for parameterizing EC effects are summarized and critically analyzed with the goal of guiding experimental design and …
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Progress towards GaAs multiplexed single-electron pump arrays
… towards making multiplexed GaAs single-electron pump arrays. The single-electron pump is a device for transferring an accurate integer number $n$ of electrons per cycle to generate precise current $I=nef$, where $f$ is the frequency of the periodic AC voltage applied and $e$ is the electron …
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Adaptive Hydraulics for Improved Centrifugal Pump Efficiency
Centrifugal pumps are used ubiquitously for fluid transport in industrial and municipal systems including: clean and waste water systems, pumped hydro energy storage, closed loop HVAC heating, and irrigation. Globally, pumps consume hundreds of billions of kilowatt hours of electricity each year. …
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Lightweight, affordable, low power solar groundwater piston pump for rural remote regions.
Solar photovoltaic powered groundwater pumping systems (SPWPS) are popular way of fetching water from boreholes in semi-arid areas in rural remote regions of most developing countries, where commercial water and electricity supply is out of reach. As the climate changes and the water table drops in …
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Synthesis of integrated solar thermal networks for domestic and industrial utilization
… Integer Non-Linear Programming (MINLP) based design and optimization methods for integrating solar thermal with domestic and industrial heat networks over multiple time frames based on discrete time intervals/periods. The study also presents a new simultaneous multi-period modelling and design …