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 16 of 16 for “"Fan design"”.
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Distortion Tolerant Fan Design
… a fuel burn reduction of up to 15%. However, the fans need to operate in severely distorted flow, which affects the blades’ mechanical integrity, aerodynamic efficiency and stability. The aim of this thesis is to understand the impact of strengthening rotor blades on aerodynamic performance, …
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Bio-Inspired Axial Fan Design, 3D Printing Fabrication and Characterization for Noise and Flow Performance Optimization
… regulations. In this context, axial-flow fans represent a key technological component, acting as major sources of both tonal and broadband aerodynamic noise, with direct implications for public health, building energy performance, and urban liveability. Mechanical fans, particularly axial …
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Using ANSYS Workbench Computer Environment in Turbomachinery Design Process
<p>The main focus of designing turbomachinery is to analyze and optimize the aerodynamic efficiency and structural integrity of the machine. The preferred way to perform aerodynamic and structural analysis is to connect the analyses and shorten the analysis time as much as possible. ANSYS, Inc. …
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HAPSS, Hybrid Aircraft Propulsion System Synthesis
… (ESAero), with the creation of a propulsion fan design tool. Since the completion of this contract in July 2010, the HAPSS program has been expanded to combine the many aspects of a hybrid propulsion system such as the propulsive fans, electric motors, generators, and controllers, and the …
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Computational fluid dynamic based optimisation of an industrial axial fan for rapid prototyping
Axial air flow fans are widely used for air movement. In an increasingly international and competitive market, smaller fan companies find themselves in need of rapid preliminary design. This need is addressed in this study through the development of a first-revision, Computational Fluid Dynamics …
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Optimum Design of Compact, Quiet, and Efficient Ventilation Fans
Axial ventilation fans are used to improve the air quality, remove contaminants, and to control the temperature and humidity in occupied areas. Ventilation fans are one of the most harmful sources of noise due to their close proximity to occupied areas and widespread use. The prolonged exposure to …
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Noise Reduction in an Axisymmetric Supersonic Aircraft Inlet using Trailing Edge Blowing
… Trailing Edge Blowing (TEB) to reduce the engine fan noise from a turbofan propulsion simulator (TPS). The TPS is 4.1 in. (10.4 cm) in diameter and is powered by compressed air. The supersonic inlet is connected to the TPS and is geometrically and acoustically scaled from a working design. The …
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Development of a virtual test facility for axial flow cooling fans
Axial flow cooling fans are critical components in cooling systems for major industries like electricity generation, mineral processing and manufacturing. Efficient fans limit power consumption in these industries and consequently reduce operating costs. Due to their size, diameter sometimes …
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Full Scale Experimental Transonic Fan Interaction with a Boundary Layer Ingesting Total Pressure Distortion
… architectures to accommodate stringent design goals for higher fuel efficiency, reduced cruise and taxi NOx emissions, and reduced noise. Airframe designs most likely to satisfy the first goal feature architectures that lead to the formation of non-uniform flow introduced to the engine …
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Hybrid wing-body aircraft noise and performance assessment
… (BLI) performance trends with increased fan face Mach number inlet designs are investigated. The presented topics are in support of the NASA subsonic fixed wing project, which seeks to lower noise and increase performance by improving prediction methods and technologies. The aircraft …
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Active heat transfer enhancement in integrated fan heat sinks
… air cooled heat sinks typically use a separate fan to force air flow over heated fins, the new design incorporates centrifugal fans directly into the body of a loop heat pipe with multiple planar condensers. These "integrated fans" rotate between the planar condensers, in close proximity to the …
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Active heat transfer enhancement in integrated fan heat sinks
… air cooled heat sinks typically use a separate fan to force air flow over heated fins, the new design incorporates centrifugal fans directly into the body of a loop heat pipe with multiple planar condensers. These "integrated fans" rotate between the planar condensers, in close proximity to the …
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Flow characteristics of jet fans in mines: experimental and numerical modeling
The use of induction fans for face ventilation in room and pillar mines has proved to be an efficient, flexible, and viable technique. In addition to their merits over conventional systems, induction fans enable remote controlled mine operations with low maintenance requirements. Theoretical …
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Flow Interaction Between Turbomachine Blade Row and Flow Resistance Medium
… study on an off-the-shelf server cooling fan is performed, showing that the fan performance has little changed. However, the system performance can be very different since the server cooling has a large hub-to-tip radius ratio, which effectively blocks the high resistance media's (HRM) …
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A New Process for Creating Design Briefs to Improve Design Innovations in Home Health Care
… provision, at a time when the demand for well-designed home healthcare products (HHCPs) and associated services is rapidly growing. Research into their approaches found that innovation strategies and techniques adopted by many HHCP suppliers have not matured to realise the best innovative …