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Experimental Investigation and Modeling of Scale Effects in Micro Jet Pumps

dc.contributor.advisor Protz, Jonathan M Gardner, William Geoffrety 2012-05-29T16:40:57Z 2012-11-25T05:30:17Z 2011
dc.description.abstract <p>Since the mid-1990s there has been an active effort to develop hydrocarbon-fueled power generation and propulsion systems on the scale of centimeters or smaller. This effort led to the creation and expansion of a field of research focused around the design and reduction to practice of Power MEMS (microelectromechanical systems) devices, beginning first with microscale jet engines and a generation later more broadly encompassing MEMS devices which generate power or pump heat. Due to small device scale and fabrication techniques, design constraints are highly coupled and conventional solutions for device requirements may not be practicable. </p><p>This thesis describes the experimental investigation, modeling and potential applications for two classes of microscale jet pumps: jet ejectors and jet injectors. These components pump fluids with no moving parts and can be integrated into Power MEMS devices to satisfy pumping requirements by supplementing or replacing existing solutions. This thesis presents models developed from first principles which predict losses experienced at small length scales and agree well with experimental results. The models further predict maximum achievable power densities at the onset of detrimental viscous losses.</p>
dc.subject Mechanical Engineering
dc.subject Aerospace Engineering
dc.subject jet ejector
dc.subject jet injector
dc.subject locomotive
dc.subject microengine
dc.subject microrocket
dc.subject Power MEMS
dc.title Experimental Investigation and Modeling of Scale Effects in Micro Jet Pumps
dc.type Dissertation
dc.department Mechanical Engineering and Materials Science
duke.embargo.months 6

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