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 18 of 18 for “"centrifugal pump"”.
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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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Impact of tip clearance flow on centrifugal pump impeller performance
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2003.
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Application of analytical centrifugal-pump performance models in two-phase flow
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1984.
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The development of a multistage centrifugal pump for use in flow chemistry
… drive such flows, low flow rate, high pressure pumps are used. The standard pump in use is the displacement pump. However, it tends to be expensive and produces a discontinuous flow. The goal of this investigation is to prototype a miniature multistage centrifugal pump and assess whether or not …
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Derivative-Free Methods for High-Dimensional Optimization with Application to Centrifugal Pump Design
… high-dimensional design optimization of centrifugal pump impellers. These impeller designs are parameterized by a total of 24 design parameters, which is significantly greater than what is often used for centrifugal pump impeller design. In this work, a total of three design optimization …
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Theoretical investigation of volute effect on low-flow dynamic stability in a centrifugal pump
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1992.
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Modeling flow characteristics of a low specific-speed centrifugal pump with different volute shapes
A centrifugal pump is typically designed for a specific operating condition. The pump's shape and size are fine-tuned so that it can produce a specified output pressure and flow rate at the maximum possible efficiency. When a pump begins operating off of its design flow rate, its efficiency drops. …
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An experimental investigation of the influence of inlet distortion on the fluid borne noise of a centrifugal pump
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1991.
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A CFD Investigation of the Hydrodynamic Characteristics of Fluid Flow through an Impeller and Multi-Objective Design Optimization of a Centrifugal Pump
… of fluid flow (water) through an impeller of a centrifugal pump. To illustrate a one-dimensional model is used to identify an impeller of a GDM 10 x 12 HD centrifugal pump using Vista CPD design and BladeGen tool. A three-dimensional model is then built with a commercial software package ANSYS …
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Development of a computational tool and dynamometer for optimizing variable-speed centrifugal pump selection for a containerized, direct-drive photovoltaic electrodialysis desalination system
This thesis presents an optimized centrifugal pump selection methodology to improve the hydraulic efficiency of MIT’s Global Engineering and Research (GEAR) Center’s containerized, direct-drive photovoltaic electrodialysis desalination system capable of producing up to 300m3 of potable water per …
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The practicality of adaptable geometry centrifugal pumps in U.S. Navy systems
… impeller trimming, mechanically varying centrifugal pump impellers or volutes can significantly affect pump performance. This thesis explores the potential for performance enhancement by variable impellers as an alternative to, or possibly in conjunction with, popular pump improvement …
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Photobioreactor Design for Improved Energy Efficiency of Microalgae Production
… and gas exchange with airlift alone and no centrifugal recirculating pump. Traditional tubular PBR designs feature a compressed air supply and a centrifugal pump for culture circulation and gas exchange. Circulation and gas exchange in a closed-system PBR is necessary to keep the algae …
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Reducing the power required for irrigation : designing low-pressure, pressure-compensating drip irrigation emitters and high efficiency solar-powered pumps for emerging markets
… and a design of a highly efficient solar powered centrifugal pump for small-acreage farmers drawing from shallow groundwater. The global community is facing a worsening crisis with regards to the water-energy agriculture nexus. Irrigation is a proven way to increase the agricultural productivity …
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A theoretical approach to the prediction of haemolysis in centrifugal blood pumps
The successful use of centrifugal pumps as temporary cardiac assist devices strongly depends on the extent to which they damage blood. The development of a theoretical pump evaluation model was performed in this study to facilitate an effective pump optimisation. The optimisation process seeks to …
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One-Dimensional Radial Flow Turbomachinery Performance Modeling
… model test data for radial flow compressors and pumps. The models can also be used to predict the performance of new machines provided that the model inputs can be accurately specified. Unfortunately, use of the TEIS and Two-Zone models as a predictive tool has been limited because an accurate …
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The effect of gas on multi-stage mixed-flow centrifugal pumps
… and gas, and is often maintained by using a pump placed in the well to ensure a continuous flow to the surface. Electrical Submersible Pumps consist of stacked centrifugal pump stages, each comprising a bladed impeller (rotating part) and diffuser (stationary part). In multiphase conditions, …
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Induction generators in mini and micro hydro applications as a low cost alternative
… such unconventional equipment as a reverse mode centrifugal pump and an Electronic Load Governor are used. The economics of using the unconventional equipment are compared to the conventional situation. A full fledged microhydro test rig is developed with unconventional equipment, and the design …
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Numerical and Experimental Analysis of a TurboPiston Pump
The TurboPiston Pump was invented to make use of merits such as, high flow rates often seen in centrifugal pumps and high pressures associated with positive displacement pumps. The objective of this study is to manufacture a plastic model 12†TurboPiston Pump to demonstrate the working principle …